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Class Information
Number: 423
Name: Chemistry of inorganic compounds >
Description: This is the generic class for:










Class Number Class Name No. of Patents
423/DIG.30

Alpo and sapo

127
423/DIG.5

Automatic (including computer) control

139
423/DIG.27

Beta; e.g., nu-2

83
423/276

Boron or compound thereof

104
423/289

Binary compound (e.g., boride, etc.)

95
423/291

Carbon containing

55
423/292

Halogen containing

28
423/293

Fluorine

35
423/294

Hydrogen containing

30
423/296

By reacting free hydrogen

1
423/295

By reacting metal hydride or organic derivative thereof

14
423/290

Nitrogen containing

180
423/297

Refractory metal containing (ti, v, cr, zr, nb, mo, hf, ta, or w)

85
423/298

Elemental boron

24
423/286

Hydrogen and metal or ammonium containing

45
423/287

Utilizing halogen containing reactant

17
423/288

Utilizing oxygen containing reactant

18
423/284

Nitrogen and hydrogen containing

32
423/285

Ternary compound

23
423/277

Oxygen containing

213
423/278

Binary compound

47
423/283

Ternary compound containing hydrogen

46
423/279

Ternary compound containing metal or ammonium

129
423/280

Utilizing dissolved or liquid reactant

34
423/282

Carbon containing

8
423/281

Peroxide

32
423/414

Carbon or compound thereof

147
423/439

Binary compound (e.g., carbide, etc.)

244
423/441

Calcium containing

17
423/442

By reacting carbon and inorganic calcium containing compound

17
423/443

Disulfide

23
423/444

By reacting free carbon

7
423/440

Refractory metal containing

211
423/445R

Elemental carbon

841
423/449.1

Carbon black (e.g., lampblack)

184
423/450

Directly from fluid hydrocarbon only

229
423/453

By contacting with catalyst or hot solid surface

29
423/454

Hot particulate bed or reaction zone lining or refactory

12
423/458

Gas or vapor only as infeed to process

49
423/452

Including flame impinging on cool surface

6
423/451

Rapid and discontinuous oxidation

5
423/456

Specified injection angle (e.g., helical, tangential, etc.)

94
423/457

At least one radial inlet

31
423/455

Specified injection velocity

38
423/459

From carbon monoxide infeed to process

13
423/449.9

Liquid feed only

21
423/449.8

Solid material in feed

27
423/449.2

Treating carbon black

77
423/449.5

Gaseous oxygen containing compound

58
423/449.4

Halogen or compound thereof

16
423/449.3

Treating with acid, or gas which forms acid in water

21
423/449.6

Utilizing synthetic polymer as reactant

41
423/449.7

Tire

46
423/446

Diamond

549
423/447.1

Fiber, fabric, or textile

860
423/447.9

Carbonizing cellulosic material

38
423/447.8

Controlling varying temperature or plural heating steps

112
423/447.3

From gaseous reactants

470
423/447.7

In specific atmosphere (other than vacuum or air)

140
423/447.6

Including reaction with gaseous oxygen

206
423/447.4

Prior treatment before carbonization (except with gaseous oxygen)

280
423/447.5

With metal, metal compound, or phosphorus compound

78
423/447.2

Product

525
423/445B

Fullerene (e.g., c60, c70, etc.)

334
423/448

Graphite

581
423/461

Recovery or purification

239
423/460

Treating carbon

441
423/415.1

Oxygen containing

114
423/437.1

Carbon dioxide or carbonic acid

212
423/438

From a carbonate

39
423/437.2

From carbon monoxide

177
423/418.2

Carbon monoxide

313
423/419.1

Carbonate or bicarbonate

132
423/421

Alkali metal containing (li, na, k, rb, or cs)

183
423/427

By reacting a bicarbonate

55
423/429

By reacting halogen containing compound

11
423/428

By reacting sulfur containing compound

33
423/426

Densifying soda ash

13
423/422

Hydrogen containing (bicarbonate)

82
423/423

By carbonating ammoniated brine

23
423/424

By reacting halogen containing compound

19
423/425

Sesquicarbonate

20
423/430

Alkaline earth metal containing (mg, ca, sr, or ba)

244
423/432

By reacting oxide or hydroxide of the metal

150
423/431

By reacting sulfur or halogen containing compound

42
423/420

Ammonium containing

30
423/433

Lead containing

9
423/434

By reacting compound containing sulfur or a halogen

7
423/435

By reacting lead acetate or acetic acid

8
423/436

And utilizing metallic lead as reactant

3
423/420.2

Plural metal containing

115
423/416

Carbonyl

34
423/417

Metal containing

63
423/418

Utilizing organic compound as reactant

22
423/415.2

Percarbonate compound

81
423/264

Changing color characteristic of impurity

28
423/DIG.8

Corrosion or deposition inhibiting

19
423/658.5

Extracting, leaching, or dissolving

295
423/DIG.21

Faujasite; e.g., x, y, czs-3, ecr-4, z-14hs, vhp-r

164
423/DIG.23

Ferrierite; e.g., sr-d zsm-33

57
423/DIG.39

Fullerene (e.g., c60, c70, etc.) derivative and related process

30
423/DIG.40

Fullerene composition

34
423/DIG.19

Geothermal steam purification

59
423/462

Halogen or compound thereof

145
423/470

Ammonium halide

51
423/471

Recovery or purification

28
423/491

Binary compound containing metal

148
423/499.1

Alkali metal

98
423/499.2

From carbonaceous compound

14
423/499.3

Lithium chloride

29
423/499.4

Sodium chloride

91
423/499.5

Purification

25
423/497

Alkaline earth metal (mg, ca, sr, or ba)

171
423/498

Anhydrous magnesium chloride

56
423/495

Group iiia metal or beryllium (al, ga, in, tl, or be)

134
423/496

Utilizing carbon or carbon containing compound

59
423/494

Group iva metal or copper (ge, sn, or pb)

46
423/493

Iron group metal or copper (fe, co, ni, or cu)

150
423/492

Refractory metal (ti, zr, hf, v, nb, ta, cr, mo, or w)

149
423/489

Binary fluorine containing compound

169
423/490

Alkali or alkaline earth metal containing

165
423/477

Chlorine dioxide

136
423/478

By reacting a chlorate

145
423/479

And a nitrogenous or carbonaceous compound

32
423/480

And sulfur dioxide

22
423/500

Elemental halogen

141
423/506

By reacting alkali metal halide with sulfur compound

11
423/507

By reacting hydrogen halide or ammonium halide

70
423/504

From mixture containing alkali metal or alkaline earth metal

41
423/505

Forming insoluble substance in liquid

9
423/501

Ion exchanging or liquid-liquid extracting

24
423/502

Oxidizing catalytically

81
423/503

Sorbing

25
423/481

Hydrogen halide

234
423/482

By reacting alkali metal salt with sulfuric acid

30
423/483

Hydrogen fluoride

162
423/484

From impure starting material

120
423/485

Fluorspar

26
423/488

Recovery or purification

303
423/486

Utilizing an element as reactant

43
423/487

Reacting elemental hydrogen and elemental halogen

22
423/466

Plural diverse halogens containing

54
423/463

Plural metal or metal and ammonium containing

128
423/464

Including fluorine

103
423/465

Including aluminum

53
423/467

Sulfur containing

68
423/469

Binary compound

20
423/468

Ternary compound containing oxygen

27
423/472

Ternary compound

125
423/475

Halogenate (e.g., chlorates, etc.)

47
423/473

Hypohalite or hypohalous acid

71
423/474

Calcium hypochlorite

77
423/476

Perhalate or perhalic acid

30
423/644

Hydrogen or compound thereof

388
423/645

Binary compound

115
423/646

Alkali metal containing (li, na, k, rb, or cs)

68
423/647

Alkaline earth metal containing (mg, ca, sr, or ba)

61
423/647.7

Deuterium-containing

79
423/648.1

Elemental hydrogen

671
423/650

By decomposing hydrocarbon

513
423/651

Catalytic reaction

419
423/652

Including decomposing water

443
423/653

Catalyst substance contains nickel

125
423/654

And another metal

118
423/658.2

By direct decomposition of binary compound; e.g., chemical storage, etc.

308
423/657

By reacting water or aqueous solution with metal or compound thereof

241
423/658

Iron

74
423/655

By reacting water with carbon monoxide

203
423/656

Utilizing metal oxide catalyst

167
423/658.3

By reaction of impurities in a stream containing elemental hydrogen

33
423/649

Ortho-para conversion

10
423/262

Inert or noble gas or compound thereof

69
423/DIG.7

Isotope separation

37
423/DIG.37

Lev; e.g., levynik, zmt-45, zk-20, nu-3, lz-132, lz-133

5
423/DIG.24

Lta; e.g., a, alpha, zk-4, zk-21, zk-22

101
423/DIG.28

Ltl; e.g., ba-g, l, ag-1, ag-2, ag-4, ba-6

32
423/DIG.4

Manganese marine modules

70
423/DIG.26

Mazzite; e.g., zsm-4, omega

24
423/DIG.29

Mel; e.g., zsm-11

71
423/DIG.22

Mfi; e.g., zsm-5. silicalite, lz-241

213
423/659

Miscellaneous process

435
423/210

Modifying or removing component of normally gaseous mixture

1217
423/220

Carbon dioxide or hydrogen sulfide component

578
423/224

By oxidizing or burning component

261
423/225

By suspension of metal oxide or hydroxide particles in liquid

81
423/222

Reacting mixture with sulfur dioxide, sulfite, or bisulfite

62
423/234

Utilizing ammonium or metal hydroxide solution

150
423/232

Utilizing carbonate as reactant

171
423/233

And regenerating reactant by incoming actifying gas

24
423/226

Utilizing organic reactant

405
423/228

Amine

486
423/229

Ethanolamine

264
423/227

Phenolate or phenolic type

9
423/223

Utilizing reactant containing arsenic, phosphorus, or boron

62
423/230

Utilizing solid sorbent, catalyst, or reactant

578
423/231

Iron oxide or hydroxide

105
423/221

Utilizing thionate or thiosulfate as reactant

27
423/246

Carbon monoxide component

159
423/247

Utilizing solid sorbent, catalyst, or reactant

433
423/210.5

Direct contact with molten material

71
423/240R

Halogenous component

568
423/241

Free halogen

133
423/240S

Solid removal agent

335
423/248

Hydrogen component

219
423/212

Mixture is exhaust from internal-combustion engine

266
423/213.2

Utilizing as solid sorbent, catalyst, or reactant a material containing a transition element

688
423/213.5

Group viii element

862
423/213.7

Including successive stage treatments to modify or remove a different component in each stage

223
423/219

Molecular oxygen or ozone component

338
423/235

Nitrogen or nitrogenous component

917
423/237

Ammonia

291
423/238

Utilizing liquid as reactant

138
423/236

Component also contains carbon (e.g., cyanogen, hydrogen cyanide, etc.)

171
423/239.1

Utilizing solid sorbent, catalyst, or reactant

1461
423/239.2

Zeolite

295
423/245.1

Organic component

442
423/245.3

By burning or catalytically combusting component

384
423/245.2

Utilizing liquid reactant

129
423/215.5

Solid component

284
423/242.1

Sulfur or sulfur containing component

408
423/243.01

Utilizing aqueous reactant to remove or modify sulfur or sulfur containing component

342
423/243.08

Alkali or alkali earth compound reactant

349
423/243.1

And additional ionic reactant

95
423/243.09

Sulfite

122
423/243.06

Ammonium compound reactant

125
423/243.02

And addition of gaseous reactant

39
423/243.03

Oxygen

86
423/243.11

And subsequent reactive treatment to remove sulfur from spent reactant

116
423/243.12

Gaseous treatment

51
423/243.04

Ion separation step

37
423/243.07

Transition metal or compound thereof reactant

56
423/243.05

With component added to inhibit corrosion or scaling of processing apparatus

37
423/242.2

Utilizing reactant having organic portion to remove or modify sulfur or sulfur containing component

124
423/242.4

Alcohol, arylhydroxide, or polyol

41
423/242.7

Amine

177
423/242.6

Heterocyclic

28
423/242.3

Organic acid

48
423/242.5

Sugar

7
423/244.01

Utilizing solid reactant or catalyst to remove or modify sulfur or sulfur containing component

313
423/244.07

Alkali or alkaline earth or compound reactant

283
423/244.08

Carbonate

159
423/244.09

Catalyst

160
423/244.1

Transition metal or compound thereof catalyst

157
423/244.11

Zeolite containing

42
423/244.05

Reactant added to fuel for reaction in gas mixture

60
423/244.02

Reactant or catalyst on support

155
423/244.04

Aluminosilicate support

72
423/244.03

Carbonaceous support

89
423/244.06

Transition metal or compound thereof reactant

135
423/DIG.25

Mordenite; e.g., na-d, pttilolite, zeolon

41
423/DIG.36

Mtt; e.g., zsm-23, isi-1, kz-1, eu-1, eu-4, eu-13

39
423/DIG.33

Mtw; e.g., zsm-12, nu-13, czh-5, tpz-3

66
423/351

Nitrogen or compound thereof (except ammonium salt of non-nitrogen acid)

313
423/352

Ammonia or ammonium hydroxide

160
423/354

And producing inorganic carbon and nitrogen containing compound

1
423/355

By hydrolyzing inorganic carbon and nitrogen containing compound

14
423/356

From ammonium compound

82
423/357

Utilizing calcium compound

30
423/359

From elemental hydrogen and nitrogen

224
423/362

Utilizing metal containing catalyst

49
423/363

Alkali or alkaline earth metal

27
423/361

Utilizing plurality of catalyst beds or portions

59
423/360

With exchanging heat between catalyst and synthesis or effluent gas

56
423/353

From nitride of metal or silicon

19
423/358

From organic material containing nitrogen

49
423/406

Binary compound

125
423/407

Hydrazine or hydrazine hydrate

54
423/408

Utilizing halogen or sulfur as reactant

15
423/409

Metal or ammonium containing

152
423/412

Aluminum containing

162
423/410

Azide

19
423/411

Titanium or zirconium containing

76
423/364

Carbon containing

59
423/367

And iron containing (e.g., ferrocyanide, etc.)

52
423/365

And oxygen containing (e.g., fulminate, cyanate, etc.)

69
423/366

And sulfur containing (e.g., thiocyanate, etc.)

37
423/384

Binary (e.g., cyanogen, etc.)

26
423/368

Cyanamide radical containing

13
423/369

And hydrogen containing

7
423/370

Utilizing carbide as reactant

1
423/383

Halogen containing

29
423/371

Ternary compound

75
423/372

Hydrogen cyanide

31
423/375

Employing ammonia as reactant

17
423/376

And using catalyst

72
423/373

Employing formamide or formate as reactant

7
423/377

Utilizing metal cyanide as reactant

6
423/374

Utilizing nitric oxide or free nitrogen as reactant

4
423/378

Using cyanamide as reactant

4
423/380

Utilizing free nitrogen as reactant

8
423/381

And using catalyst

1
423/382

Utilizing carbon reactant from specified source

6
423/379

Utilizing hydrogen cyanide as reactant

25
423/413

Hydrogen containing (e.g., amide, imide, etc.)

68
423/385

Oxygen containing

91
423/400

Binary compound (oxide of nitrogen)

89
423/405

Nitric oxide (no)

70
423/402

Utilizing catalyst

34
423/403

And ammonia as reactant

68
423/404

Catalyst is metal oxide

31
423/401

Utilizing nitrosyl chloride as reactant

2
423/386

Halogen containing

44
423/387

Hydrogen containing

135
423/390.1

Nitric acid

40
423/391

By reacting a salt and an acid

1
423/394.2

Purification or recovery

24
423/392

Utilizing ammonia as reactant

53
423/393

Utilizing nitrogen oxide as reactant

78
423/394

Nitrogen peroxide

22
423/388

Sulfur containing

47
423/389

Sulfamic acid

3
423/395

Nitrate

161
423/396

Ammonium containing

94
423/397

Utilizing ammonium or metal nitrate as reactant

48
423/398

Utilizing halogen containing reactant

7
423/399

And nitric acid reactant

10
423/DIG.38

Offretite; e.g., tma offreite

15
 

Oxygen or compound thereof (423/579)

 
423/579

Oxygen or compound thereof

299
423/592.1

Metal containing

283
423/641

Alkali metal (li, na, k, rb, or cs)

172
423/643

By reacting a nitrogenous or halogenous compound

13
423/642

By reacting sulfur containing compound

15
423/635

Alkaline earth metal (mg, ca, sr, or ba)

172
423/636

Process of manufacturing

177
423/640

By hydrating lime

72
423/639

By reacting a nitrogenous or halogenous compound

47
423/638

By reacting a sulfur containing compound

54
423/637

Utilizing carbonate as reactant

99
423/594.18

Cadmium (cd) or mercury (hg) containing

34
423/594.19

Cobalt (co) or nickel (ni) containing

97
423/604

Group ib metal (cu, ag, or au)

181
423/624

Group iiia metal or beryllium (al, ga, in, tl, or be)

165
423/625

Aluminum

607
423/628

Forming catalyst, sorbent activated, or narrow pore alumina

287
423/629

Hydroxide

191
423/627

Reacting metallic aluminum with water or water vapor

32
423/626

Utilizing acid

143
423/630

Utilizing carbon or compound thereof as reactant

133
423/631

Utilizing nitrogenous compound as reactant

70
423/618

Group iva metal (ge, sn, or pb)

188
423/619

Lead

64
423/620

Utilizing metallic lead as reactant

12
423/621

Molten

7
423/608

Group ivb metal (ti, zr, or hf)

462
423/610

Titanium dioxide

469
423/611

Utilizing titanium halide as reactant

83
423/612

Titanium tetrahalide

122
423/613

Reacting with oxiding gas

111
423/614

In fluidized bed

21
423/615

Utilizing titanium sulfate as reactant

55
423/616

And utilizing acid

54
423/609

Titanium monoxide or sesquioxide

60
423/617

Group va metal or arsenic (sb, bi, or as)

142
423/606

Group vib metal (cr, mo, or w)

177
423/607

Chromium

119
423/605

Group viib metal (mn, tc, or re)

173
423/632

Iron

288
423/633

Ferric oxide

269
423/634

Gamma form

112
423/593.1

Plural metals or metal and ammonium containing

371
423/594.15

Alkali metal containing (li, na, k, rb, or cs)

153
423/594.16

Alkaline earth metal containing (mg, ca, sr, or ba)

213
423/600

Aluminum (e.g., aluminate, etc.)

467
423/601

Arsenic (e.g., arsenite, etc.)

38
423/602

Arsenate

45
423/603

And lead containing

3
423/594.7

Bismuth or antimony containing (e.g., bismuthate, antimonate, etc.)

112
423/595

Chromium (e.g., chromate, etc.)

147
423/596

And alkali metal, alkaline earth metal, or ammonium containing

143
423/597

Dichromate

17
423/594.5

Cobalt (co) containing

118
423/594.6

And alkali metal or alkaline earth metal containing

166
423/594.1

Iron (fe) containing

269
423/594.2

And alkali metal or alkaline earth metal containing

205
423/599

Manganese (e.g., manganate, etc.)

480
423/594.3

Nickel (ni) containing

152
423/594.4

And alkali metal or alkaline earth metal containing

207
423/594.9

Tin, lead, or germanium containing (e.g., stannate, plumbate, etc.)

134
423/598

Titanium (e.g., titanate, etc.)

532
423/594.13

Tungsten containing (e.g., tungstate, etc.)

109
423/594.8

Vanadium, niobium, or tantalum containing (e.g., vanadate, niobate, tantalate, etc.)

195
423/594.14

Zinc, cadmium, or mercury containing (e.g., zincate, etc.)

102
423/594.12

Zirconium containing (e.g., zirconate, etc.)

143
423/594.17

Vanadium (v), niobium (nb), or tantalum (ta) containing

140
423/622

Zinc

233
423/623

Volatizing zinc

36
423/582

Peroxide

31
423/583

Alkaline earth metal (mg, ca, sr, or ba)

23
423/584

Hydrogen

223
423/586

From inorganic peroxide

7
423/587

From organic reactant

18
423/591

By oxidizing alcohol or hydrocarbon

21
423/588

By oxidizing hydroquinone or anthraquinone

109
423/590

Including dissolving reactant in alcohol containing solvent

24
423/589

Including dissolving reactant in ester containing solvent

21
423/585

From persulfuric acid or persulfate

5
423/581

Superoxide or ozone

42
423/580.1

Water

105
423/580.2

Heavy water

71
423/DIG.3

Papermaking liquor

101
423/DIG.34

Pentasils other than mfi and mel; e.g., az-1, tz-01, tz-02, trs, zbm-10

13
423/299

Phosphorus or compound thereof

155
423/322

Elemental phosphorus

115
423/323

Utilizing a phosphate as reactant

64
423/300

Halogen containing

129
423/301

Fluorine

88
423/302

Nitrogen containing

58
423/304

Oxygen containing

102
423/305

Metal or ammonium containing

443
423/307

Hydrogen containing

93
423/308

Orthophosphate (e.g., calcium hydroxyapatite)

304
423/309

Utilizing phosphoric acid or its anhydride as reactant

205
423/310

And ammonia

72
423/314

Metaphosphate

58
423/311

Orthophosphate

254
423/312

Alkali metal or ammonium containing

84
423/313

Utilizing phosphoric acid as reactant

103
423/306

Plural metal or metal and ammonium containing

455
423/315

Triphosphate or tetraphosphate

120
423/316

Ternary compound containing hydrogen

39
423/317

Orthophosphoric acid

75
423/321.1

Purification or recovery

235
423/321.2

Organic solvent extraction

130
423/319

Reacting an acid and phosphate rock

112
423/320

Sulfuric acid

157
423/318

Utilizing reactant containing silicon or carbon

11
423/303

Sulfur containing

37
423/249

Radioactive (at. no. 84+ or radioactive isotope of another element)

196
423/252

Thorium compound

53
423/250

Transuranium compound

44
423/251

Plutonium containing

122
423/253

Uranium compound

105
423/254

Binary compound

21
423/256

Carbon containing

16
423/257

Chlorine containing

9
423/258

Fluorine containing

64
423/259

Tetrafluoride

35
423/255

Hydrogen containing

8
423/260

Oxygen containing

100
423/261

Dioxide

128
423/263

Rare earth compound (at. no. 21, 39, or 57-71)

792
423/DIG.9

Reaction techniques

33
423/DIG.13

Catalyst contact

33
423/DIG.15

Comminution

33
423/DIG.16

Fluidization

135
423/DIG.11

High pressure

14
423/DIG.14

Ion exchange; chelation or liquid/liquid ion extraction

284
423/DIG.17

Microbiological reactions

155
423/DIG.12

Molten media

132
423/DIG.10

Plasma energized

40
423/DIG.31

Rho; e.g., ecr-10, lz-214

3
423/508

Selenium or tellurium or compound thereof

224
423/509

Binary compound

170
423/510

Elemental selenium or tellurium

81
423/324

Silicon or compound thereof

194
423/344

Binary compound (e.g., silicide, etc.)

299
423/345

Of carbon (i.e., silicon carbide)

403
423/346

By reacting vapor phase silicon compound with carbon or carbon containing compound

104
423/347

Of hydrogen (e.g., silane, etc.)

139
423/348

Elemental silicon

317
423/349

From silicon containing compound

280
423/350

Utilizing reducing substance

210
423/341

Halogen containing

178
423/342

Halogenated silane

200
423/343

Volatizing a solid

40
423/325

Oxygen containing

202
423/326

Metal containing (i.e., silicate)

469
423/332

Alkali metal containing (li, na, k, rb, or cs)

302
423/334

By heat treating silica and the alkali metal

79
423/333

By precipitating or gelling from silicate solution

109
423/331

Alkaline earth metal containing (mg, ca, sr, or ba)

262
423/327.1

Aluminum containing

172
423/328.1

Aluminosilicate

214
423/328.2

Crystalline

290
423/328.3

Mica

14
423/330.1

Gelling or precipitation

81
423/329.1

X-ray diffraction pattern

74
423/327.2

Mullite

18
423/335

Silica

841
423/338

By gelling

376
423/336

By hydrolyzing vapor phase silicon compound

128
423/337

By oxidizing volatile silicon compound (e.g., combustion, etc.)

156
423/339

By precipitating

403
423/340

By purifying sand

46
423/DIG.32

Sodalite; e.g., hs, ultramarine

12
423/511

Sulfur or compound thereof

163
423/561.1

Binary compound

213
423/563

Hydrogen sulfide

176
423/564

By catalytic reaction

92
423/562

Polysulfide

60
423/566.2

Sulfide of alkali metal

48
423/566.3

Sulfide of alkaline earth metal

25
423/566.1

Sulfide of cd, zn, or hg

133
423/565

Utilizing free sulfur as reactant

58
423/566

Utilizing sulfate or sulfuric acid as reactant

36
423/567.1

Elemental sulfur

121
423/568

Chlorinating

11
423/578.4

From liquid or solid compound

44
423/578.1

Purifying crude sulfur

87
423/578.2

From ore

23
423/571

Reacting a sulfide

106
423/573.1

Hydrogen sulfide

247
423/576.4

By reacting gaseous feed stream with liquid aqueous mixture

62
423/576.7

Organic compound-containing

33
423/576.5

Transition metal-containing mixture

74
423/576.6

Chelated or sequestered transition metal

121
423/576.8

By reacting gaseous feed with gas containing free oxygen

157
423/576.2

With specified procedure for sulfur recovery or specified conditions for producing sulfur in more recoverable form

134
423/574.1

With sulfur dioxide

329
423/574.2

In inorganic liquid

32
423/575

Utilizing organic solvent or absorbent

62
423/576

Utilizing promotor containing silica or aluminum

79
423/577

Reacting metal sulfide with sulfur dioxide

10
423/572

With steam to form hydrogen sulfide

8
423/569

Reducing sulfur dioxide by carbon containing material

44
423/570

Catalytic reaction

43
423/512.1

Oxygen containing

45
423/519

Bisulfite

38
423/515

Dithionite

53
423/516

Employing amalgam as reactant

4
423/517

Metal and ammonium containing

21
423/513

Persulfate

30
423/518

Plural metal containing

62
423/544

Sulfate

145
423/551

Alkali metal containing (li, na, k, rb, or cs)

191
423/553

Dehydrating

14
423/552

Utilizing chloride as reactant

47
423/554

Alkaline earth metal containing (mg, ca, sr, or ba)

101
423/555

Calcium

309
423/556

Aluminum containing

90
423/545

Ammonium containing

70
423/547

Employing sulfite or bisulfite as reactant

13
423/549

Employing sulfuric acid as reactant

37
423/550

Ammonia from waste gas

12
423/548

Using metal sulfate as reactant

26
423/546

Utilizing thiocyanate as reactant

5
423/557

Copper containing

38
423/558

Iron containing

77
423/559

Lead containing

28
423/519.2

Sulfite

90
423/520

Bisulfate

27
423/539

Sulfur dioxide

144
423/542

Burning or roasting a sulfur compound

78
423/543

Burning sulfur

40
423/540

From acid sludge or waste

34
423/541.1

Utilizing metal sulfate as reactant

35
423/541.4

Ammonium sulfate

24
423/532

Sulfur trioxide

53
423/533

Utilizing catalyst in reaction

75
423/535

Catalyst contains oxygen, vanadium, and another metal

36
423/538

Oxygen containing catalyst

10
423/536

Platinum catalyst

4
423/537

With sulfate or asbestos carrier

2
423/534

Promoter or successive diverse catalysts

6
423/521

Ternary compound containing hydrogen

18
423/522

Sulfuric acid

284
423/523

Nitrogenous impurity or utilizing nitrogenous catalyst or reactant

46
423/524

Lead chamber process

5
423/531

Purifying acid or reactant

169
423/525

Starting material includes organic or carbonaceous impurity

30
423/527

Adding organic compound to mixture

6
423/528

Contacting mixture with gas, steam, or vapor

18
423/526

Utilizing pressure or vacuum on mixture

4
423/529

Subjecting reactants to pressure, vacuum, or steam

31
423/530

Utilizing metal sulfate

12
423/514

Thiosulfate

52
423/560

Ternary compound containing hydrogen and metal (e.g., hydrosulfide, etc.)

22
423/DIG.6

Temperature control

67
423/DIG.35

Ton; e.g., theta-1, isi-1, kz-2, zsm-22, nu-10

16
423/1

Treating mixture to obtain metal containing compound

158
423/179

Alkali metal (li, na, k, rb, or cs)

132
423/201

Agitating during heating or reaction

14
423/209

Carbonating

22
423/180

Decomposing amalgam or other alloy

11
423/184

Forming insoluble substance in liquid

123
423/196

Agitating during reaction

1
423/186

Carbonating

42
423/191

Halogenating

3
423/192

Hydroxylating or hydrating

7
423/188

Subjecting mixture to pressure, vacuum, or steam

2
423/193

Sulfating

14
423/189

Utilizing carbon dioxide as reactant

32
423/190

Mixture contains metal chloride

22
423/187

Utilizing or forming nitrogenous compound

4
423/185

Fluorinating or defluorinating

20
423/197

Halogenating

30
423/198

Hydroxylating or hydrating

16
423/195

Subjecting mixture to pressure, vacuum, or steam

11
423/199

Sulfating

46
423/194

Utilizing or forming nitrogenous compound

21
423/181

Ion exchanging or liquid-liquid extracting

125
423/179.5

Lithium

189
423/206.1

Mixture contains organic or carbonaceous impurity

40
423/206.2

Alkali carbonate from trona

113
423/207

Burning the impurity

51
423/182

Regenerating solution

22
423/183

Hydroxide solution

64
423/203

Subjecting mixture to pressure, vacuum, or steam

14
423/205

Leaching or forming water soluble substance

11
423/204

Mixture contains organic impurity

3
423/202

Treating with acid or acid salt

36
423/200

Volatizing an alkali metal

13
423/208

Water leaching or forming water soluble substance

53
423/155

Alkaline earth metal (mg, ca, sr, or ba)

231
423/158

Forming insoluble substance in liquid

152
423/160

Agitating during reaction

20
423/165

Carbonating

124
423/163

Halogenating

55
423/164

Hydroxylating or hydrating

85
423/162

Nitrating or ammoniating

22
423/161

Specified particle size used or made

35
423/159

Subjecting mixture to pressure, vacuum, or steam

20
423/166

Sulfating

206
423/157

Ion exchanging or liquid-liquid extracting

113
423/156

Magnetic separating

9
423/168

Mixing fuel with starting mixture

18
423/178

Mixture contains halogen or sulfur

56
423/157.2

Phosphate rock or ore

52
423/157.3

Acid treatment

51
423/157.4

Sulfating

76
423/157.5

Phosphorous or phosphorous compound containing waste as feed

17
423/169

Separating magnesium and calcium from each other (e.g., treating dolomite, etc.)

17
423/167.1

Treating asbestos

36
423/173

Treating impure carbonate (e.g., oyster shells, etc.)

38
423/175

Calcining

52
423/176

Utilizing vacuum or steam

6
423/177

With agitating or at specified temperature

30
423/174

Forming calcium carbide

5
423/170

Treating impure sulfate (e.g., barite, etc.)

49
423/171

Calcining gypsum

46
423/172

With steam or at specified temperature

23
423/23

Group ib metal (cu, ag, or au)

167
423/47

Desulfurizing or de-arsenating

51
423/26

Flotation

80
423/42

Forming insoluble substance in liquid

161
423/43

Specified ph

75
423/48

Forming sulfide or matte

42
423/46

Halogenating

62
423/24

Ion exchanging or liquid-liquid extracting

464
423/27

Leaching, washing, or dissolving

377
423/34

Forming insoluble substance in liquid

124
423/35

Forming oxide or carbonate

48
423/36

Sulfating

72
423/37

Sulfiding

56
423/38

Halogenating

120
423/39

Specified temperature

51
423/40

With chlorine gas or chlorinated water

44
423/28

Specified particle size

32
423/41

Sulfating

155
423/29

With a cyanide compound

201
423/31

And agitating

49
423/30

And pressurizing

53
423/32

With ammonia or ammonium containing compound

79
423/33

Specified temperature

27
423/25

Sorbing or magnetic separating

79
423/45

Sulfating

63
423/44

Volatizing copper, silver, or gold

23
423/99

Group iib metal (zn, cd, or hg)

214
423/110

Desulfurizing

20
423/101

Forming insoluble substance in liquid

180
423/102

Agitating during reaction

22
423/105

Carbonating

22
423/103

Halogenating

34
423/104

Hydroxylating or hydrating

49
423/106

Sulfating

57
423/100

Ion exchanging or magnetic separating

175
423/109

Leaching, washing, or dissolving

265
423/107

Volatizing zinc, cadmium, or mercury

69
423/108

Mixture contains lead

26
423/111

Group iiia metal or beryllium (al, ga, in, tl, or be)

248
423/130

Destroying or separating organic impurity

93
423/114

Forming compound containing ammonium and metal

19
423/115

Forming compound containing plural metals

87
423/119

Alkali metal aluminate

88
423/120

From alunite

24
423/121

From bauxite

197
423/118.1

Aluminosilicate other than zeolite

62
423/116

And halogen

26
423/117

And sulfur

15
423/122

Forming insoluble substance in liquid

229
423/124

Agitating during reaction

26
423/129

Carbonating

28
423/126

Halogenating

54
423/127

Hydroxylating or hydrating

202
423/125

Nitrating

9
423/123

Subjecting mixture to pressure, vacuum, or steam

46
423/128

Sulfating

64
423/112

Ion exchanging or liquid-liquid extracting

182
423/131

Leaching, washing, or dissolving

146
423/132

With acid

160
423/113

Magnetic separating

18
423/137

Utilizing carbon as reducing agent

42
423/133

Volatizing

32
423/134

Beryllium

4
423/135

Group iiia metal

58
423/136

Utilizing elemental halogen as reactant

49
423/89

Group iva metal (ge, sn, or pb)

157
423/90

Detinning

9
423/91

Treating with free halogen or hydrogen halide

6
423/92

Forming insoluble substance in liquid

129
423/94

Halogenating

29
423/95

Nitrating or sulfating

25
423/93

Pressurizing or agitating during reaction

20
423/98

Leaching, washing, or dissolving

157
423/96

Volatizing germanium or tin

22
423/97

Volatizing lead

30
423/69

Group ivb metal (ti, zr, or hf)

173
423/80

Chemically converting for physical solid-solid separation

34
423/86

Dissolving or leaching of iron

61
423/71

Forming compound containing plural metals

72
423/72

Halogen containing

24
423/85

Forming insoluble compound containing group ivb metal

142
423/70

Ion exchanging or liquid-liquid extracting

94
423/73

Separating group ivb metals from each other

30
423/84

Treating with compound containing alkali metal or alkaline earth metal

88
423/81

Treating with nitrogen or nitrogenous compound

59
423/82

Treating with sulfur or halogen containing acid

148
423/83

Forming metallic iron or insoluble iron containing compound

55
423/74

Utilizing fluidized bed

64
423/75

Volatizing

26
423/76

Titanium, zirconium, or hafnium

100
423/79

Contacting feed solids with chlorine gas

80
423/77

Removing undesirable matter from vapor

35
423/78

Specified physical form of feed solids

20
423/87

Group va metal or arsenic (sb, bi, or as)

297
423/88

Volatizing

50
423/62

Group vb metal (v, nb, or ta)

156
423/65

Forming insoluble substance in liquid

95
423/67

Ammoniating or sulfating

51
423/66

Hydroxylating or hydrating

36
423/64

From organic liquids

31
423/63

Ion exchanging or liquid-liquid extracting

126
423/68

Leaching, washing, or dissolving

152
423/53

Group vib metal (cr, mo, or w)

328
423/61

Forming compound containing plural metals

121
423/55

Forming insoluble substance in liquid

226
423/56

Ammoniating or nitrating

84
423/58

Forming compound containing plural metals

106
423/57

Sulfating

35
423/54

Ion exchanging or liquid-liquid extracting

252
423/59

Volatizing

40
423/60

As a compound containing chlorine

17
423/49

Group viib metal (mn, tc, or re)

227
423/50

Forming insoluble substance in liquid

112
423/51

Halogenating

21
423/52

Sulfating

27
423/138

Iron group metal (fe, co, or ni)

228
423/151

Converting metal to magnetic form

39
423/152

At specified temperature

19
423/153

Desulfurizing

31
423/154

At specified temperature

25
423/140

Forming insoluble substance in liquid

363
423/142

Agitating during reaction

51
423/141

Subjecting mixture to pressure, vacuum, or steam

70
423/146

Sulfating

111
423/147

Halogenating, hydroxylating, or hydrating

37
423/143

Utilizing or forming nitrogenous compound

86
423/144

Carbonating, hydroxylating, or hydrating

66
423/145

Sulfating

37
423/139

Ion exchanging or liquid-liquid extracting

446
423/150.1

Leaching, washing, or dissolving

220
423/150.2

Spent catalyst

42
423/150.3

Treatment of iron containing waste mixture

110
423/150.4

Treatment of matte or nodule

92
423/150.5

Gas injected into mixture

74
423/150.6

With electrolytic or magnetic separation

33
423/148

Utilizing fluidized bed

57
423/149

Volatizing iron, nickel, or cobalt

60
423/22

Platinum group metal (ru, rh, pd, os, ir, or pt)

436
423/2

Radioactive metal (at. no. 84+ or radioactive isotope of another metal)

279
423/3

Actinide series metal (at. no. 89+)

180
423/20

Acid leaching

178
423/11

Forming insoluble substance in liquid

161
423/18

Acid leaching

103
423/12

By coprecipitating with carrier

33
423/13

Carrier contains bismuth

4
423/14

Carrier contains lanthanum

3
423/17

Carbonate leaching

83
423/15

Forming compound containing plural metals or metal and ammonium

86
423/16

Forming peroxide (e.g., u04, etc.)

31
423/5

Fusing

38
423/6

Ion exchanging or sorbing

142
423/7

Organic synthetic resin

148
423/8

Liquid-liquid extracting

186
423/9

Organo-nitrogen solvent

103
423/10

Organo-phosphorus solvent

236
423/4

Removing cladding or coating from fuel element

41
423/19

Volatizing

68
423/21.1

Rare earth metal (at. no. 21, 39, or 57-71)

251
423/21.5

Ion exchanging or liquid-liquid extracting

146
423/DIG.18

Treating trash or garbage

46
423/DIG.1

Waste acid containing iron

65
423/DIG.2

Sulfuric acid

77
423/265

With additive

204
423/275

Additive contains metal, boron, or silicon

148
423/274

Coating or binder

93
423/272

For hydrogen peroxide

96
423/273

Additive contains metal, boron, or silicon

42
423/266

For stabilizing crystal size or shape

154
423/270

For sulfur trioxide

7
423/271

Additive contains metal, boron, or silicon

6
423/267

Including anticaking or antihygroscopic function

65
423/268

Additive contains organic portion

52
423/269

Including corrosion inhibitor

19
423/700

Zeolite

352
423/710

Aging to induce zeolite formation from inorganic mixture

98
423/711

With physical treatment

46
423/713

Isomorphic metal substitution

325
423/714

Acid treatment

58
423/715

Halogen containing acid

60
423/701

Organic compound used to form zeolite

113
423/702

Organic template used

240
423/703

Mixed template

83
423/704

Nitrogen containing

133
423/705

Amine

375
423/706

Cyclic

293
423/708

Diamine

170
423/707

Hydroxyl

102
423/709

Seed used

240
423/718

Structure defined x-ray diffraction pattern

431
423/712

Synthesized from naturally occurring product

99
423/716

With change of synthesized zeolite morphology

175
423/717

Physical treatment

39
 
 
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