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Class Information
Number: 210
Name: Liquid purification or separation >
Description: STATEMENT OF CLASS SUBJECT MATTER










Class Number Class Name No. of Patents
210/541

Adjuncts

294
210/143

Automatic control

1120
210/148

Container movement operated

10
210/145

Responsive to rotation

36
210/146

Controlled cover latch

14
210/147

Controlled discharge means

20
210/144

Responsive to vibration or unbalance

52
210/149

Thermal

284
210/DIG.3

Belt alignment

27
210/249

Bracket or leg support for static separator assembly

157
210/250

Leg

36
210/321.6

Casing divided by membrane into sections having inlet(s) and/or outlet(s)

599
210/321.62

Antithrombogenic membrane

18
210/321.83

Coiled membrane

211
210/321.87

Cylindrical membrane

269
210/321.88

Plural cylindrical membranes all connected for parallel flow

238
210/321.89

All cylindrical membranes are parallel

409
210/321.9

With embedded baffle

84
210/321.71

Dialyzer with dialysate proportioning means

228
210/321.72

Each section having inlet(s) and outlet(s)

258
210/321.74

Coiled membrane

184
210/321.78

Cylindrical membrane

182
210/321.79

Plural cylindrical membranes all connected for parallel flow

239
210/321.8

All cylindrical membranes are parallel

465
210/321.81

With embedded baffle

90
210/321.73

Noncoiled nonannular cross section tube

14
210/321.75

Planar membrane

397
210/321.76

Spiral flow

81
210/321.77

Pleated membrane

52
210/321.66

Energy recovery from treated liquid

62
210/321.67

Membrane movement during purification

88
210/321.68

Nontranslatory rotary

100
210/321.61

Membrane secured with adhesive of specified composition

74
210/321.82

Noncoiled nonannular cross section tube

14
210/321.65

Permeated liquid quantity measurement or control

297
210/321.84

Planar membrane

442
210/321.85

Spiral flow

100
210/321.86

Pleated membrane

63
210/321.64

Plural diverse structured membranes within a single casing

115
210/321.63

Rotating mechanical agitator adjacent membrane

60
210/321.69

With membrane cleaning or sterlizing means (other than by filter movement or rotating agitator)

337
210/321.7

Solid cleaning material (e.g., balls)

7
210/DIG.5

Coalescer

338
210/251

Combined

259
210/173

Comminuting

156
210/174

Cylindrical strainer

21
210/96.1

Constituent mixture variation responsive

737
210/96.2

With membrane

226
210/239

Convertible

54
210/240

Filter having selectively usable flow connector means

59
210/DIG.6

Dehydrators

66
210/294

Diverse distinct separators

95
210/295

Including a filter

412
210/299

Including constituent trapping feature

158
210/300

Alternate filters and traps in series

35
210/301

Plural traps

23
210/305

Baffle preceding or within sediment trap

167
210/306

Deflecting prefilt from filter medium

49
210/303

Cut-off sediment trap

17
210/308

Directly communicating with tubular filter interior

27
210/309

Attached to filter element

26
210/311

Downflow inlet, upflow through filter medium

66
210/307

Downstream of filter medium

91
210/302

Flow-line valve upstream of separator

14
210/310

Lateral trap

19
210/312

Sediment discharge means

76
210/313

Valve controlled

103
210/304

Tangential flow, spiral or convolute baffle

242
210/296

Including liquid as a separating medium

29
210/297

Moving filter medium

164
210/314

Spaced filters

208
210/317

Including non-self-supporting medium

117
210/318

Incompatible shapes

8
210/316

One adjacent inlet or outlet conduit

138
210/315

One within another

281
210/298

With mechanical residue or sediment mover

110
210/319

With agitator

69
210/320

With baffle perpendicular to flow direction

163
210/DIG.7

Drier blocks

12
210/243

Electrical insulating or electricity discharging

493
210/DIG.8

Fat fryer

117
210/348

Filter

143
210/417

Alternating oppositely opening liquid distributors

17
210/433.1

Divided filtered, and unfiltered liquid passages

313
210/434

Recombining

110
210/353

Free cleaning means, e.g., loose abrading particles

26
210/470

Handled

214
210/471

Ring type

36
210/358

Imperforate drum, medium on arc, chord or end

19
210/500.1

Material

247
210/506

Coated or impregnated, e.g., adhesively bound

453
210/507

Fabrics

128
210/508

Fibrous

383
210/509

Inorganic

162
210/503

Diverse granular or fibrous

361
210/505

Including fibers

470
210/504

With adhered coating or impregnant

303
210/510.1

Porous unitary mass

605
210/500.21

Semipermeable membrane

320
210/500.24

Antithrombogenic coating or membrane

65
210/500.26

Glass

201
210/500.23

Hollow fiber or cylinder

908
210/500.22

Isotropically pored

115
210/500.25

Metal containing

308
210/500.27

Organic

633
210/500.35

Acrylate

193
210/500.36

Alkene other than vinyl

398
210/500.37

Amine

232
210/500.38

Amide

469
210/500.39

Imide

194
210/500.4

Carbonate

58
210/500.28

Cyclic

220
210/500.29

Cellulosic

251
210/500.3

Cellulose acetate

109
210/500.31

Cellulose diacetate

43
210/500.32

Cellulose triacetate

49
210/500.33

Homocyclic

105
210/500.34

Styrene

109
210/500.41

Sulfone

448
210/500.42

Vinyl

401
210/500.43

Acrylonitrile

144
210/502.1

Sorptive component containing

1367
210/501

Sterilizing or neutralizing agent containing

242
210/354

Medium, cleaner or agitator moved by fluid

72
210/355

Cleaner

62
210/356

Medium flexed

104
210/359

Movable medium

190
210/400

Belt type

429
210/401

Superimposed on additional moving support

226
210/360.1

Centrifugal extractor

401
210/364

Casing, shaft and filter unit gyratorily mounted

12
210/369

Discharging residue

98
210/372

By residue engaging means

26
210/376

Axially reciprocable

40
210/373

Fixed

41
210/374

Rotatable

95
210/375

Pivoted

23
210/370

Secondary motion of filter medium

30
210/371

With variable flow controller

17
210/367

Filter gyratorily mounted on shaft

15
210/378

Including filtrate receiving means having plural filtrate outlets

52
210/379

Including filtrate receiving trough adjacent top discharge

11
210/377

Internal work distributor

78
210/380.1

Rotating element construction

370
210/380.3

Horizontal axis

92
210/381

Inwardly extending partitions

18
210/380.2

Laundry

17
210/382

Top filtrate discharge

13
210/365

Shaft and filter unit gyratorily mounted

24
210/366

Gyratory mounting above filter

7
210/363

With adjustable rotation stabilizer

18
210/361

With individual article container or support

54
210/362

Container or support reversible

4
210/360.2

With inward flow of feed component

55
210/368

With rotation brake

11
210/402

Drum type

321
210/404

Annular segmented compartment

128
210/403

Internal feed

120
210/390

Mounted on movable valve element

25
210/386

Rolls or confining members contacting residue

169
210/383

Separate agitator

35
210/387

Unrollable

155
210/388

Vibrating or longitudinally reciprocating

194
210/389

Longitudinally moving prefilt type

48
210/384

Vibrator and unidirectional motion filter medium

55
210/391

With cleaning means

233
210/393

Backwash or blowback and additional cleaner

163
210/394

Discharging inside, e.g., internal-type drum

75
210/392

Fixed position or attached valve blocking means

32
210/396

Solid cleaner, e.g., scraper

274
210/397

With plural outlets from filter casing

46
210/395

With filter-driven valve means

7
210/385

With plural motion

30
210/398

Within sealed enclosure

96
210/399

Movable casing

14
210/405

Movable prefilt distributor

64
210/459

Pipe or plate attached type

138
210/460

Attached to open end of pipe

298
210/463

Inserted holder

81
210/462

Pipe is connection to plate

49
210/461

Spaced wall-type element

91
210/464

Portable receptacle draining type

118
210/465

Cooperating handles on receptacle and drainer

23
210/469

On or adjacent receptacle upper edge

101
210/466

Receptacle spout

36
210/468

Spaced from spout discharge

10
210/467

Within receptacle proper

35
210/456

Prefilt flow distributor or diverter

641
210/349

Pulsation dampener or gas trapping

37
210/455

Receptacle and modified spacing surface or support for filter medium

561
210/357

Relatively movable members interleaved for cleaning

50
210/473

Resting on supporting receiver, e.g., portable

144
210/482

At lower end or prefilt receiver

144
210/474

At upper edge of filtrate receiver

453
210/475

Filter offset in cover

42
210/476

Telescoped receivers or receiver sections

26
210/477

Resting on internal stop or surface

238
210/479

Inner separate retainer

52
210/480

With contractor for expandable retainer

14
210/481

Longitudinal retainer or guide, (e.g., reflex coffee maker)

32
210/478

Unitary filter medium and radially expandable retainer

17
210/483

Supported, shaped or superimposed formed mediums

332
210/488

Abutted or superimposed members

429
210/492

Alternating dissimilar

145
210/489

For series flow

593
210/490

Integral or coated layers

961
210/491

All fibrous

114
210/496

Bound, fused or matted, e.g., porous shapes, sponges, etc.

297
210/494.1

Convolute

112
210/494.2

Metal

29
210/494.3

With edge spacer

26
210/497.01

Cylindrical, conical, or trough shape

682
210/497.3

Conical

138
210/497.2

Filter blank

105
210/497.1

Helically wound

315
210/485

External cage-type support

138
210/484

Medium within foraminous supporting container or sheath

331
210/498

Perforated or grooved plates

314
210/493.1

Pleated

377
210/493.2

Bonded end caps

288
210/493.5

Filter element

302
210/493.3

Rectangularly shaped

97
210/493.4

Spirally formed

106
210/499

Screens, e.g., woven

465
210/495

Single ring or closed frame type

116
210/486

Spaced wall type, e.g., hollow leaf

306
210/487

Concentric, convolute or pleated

149
210/406

Vacuumized filtrate receiver

346
210/472

Vented

321
210/457

With central pervious tubular receiver

274
210/458

Plural concentric receivers

52
210/418

With flow controller for material being treated

230
210/419

Attached to or within portable prefilt receiver

36
210/428

Combining or dividing flow passages with filter in combined passage

68
210/429

Filter coaxial with valve seat or valve stem

122
210/431

Filter fixed to valve seat, opposed to valve head

21
210/430

Filter surrounds valve

90
210/432

Filter in valve body recess

48
210/420

Selective directive flow relative to filter

147
210/427

Backwash

78
210/424

Multi-way valve

128
210/425

Backwash

55
210/426

Encased

24
210/421

Pivoted prefilt deflector

24
210/422

Plural outlets from filter casing

58
210/423

Attached unitary plural passage header

24
210/350

With movable means to compress medium

172
210/351

Actuating means external of closed casing

68
210/352

Internal spring

65
210/416.1

With pump, gas pressure, or suction source

928
210/416.2

For aquarium or swimming pool

553
210/416.3

For drinking water

172
210/416.4

For fuel system

237
210/416.5

For lubricating or oil treating system

265
210/407

With residue removing means or agitation of liquid

193
210/408

Diverse, e.g., combined agitators, scrapers, aeration blowback

200
210/413

Fixed filter medium and movable stirrer or cleaner

310
210/415

Nontranslatory rotary

270
210/414

With plural outlets from filter casing

130
210/409

Fluid cleaning

258
210/410

Air pump type

41
210/411

Backwash or blowback

527
210/412

Liquid pulsator

84
210/435

Within flow line or flow line connected close casing

430
210/446

Axially aligned inlet and outlet

430
210/447

Laterally removable

140
210/449

Pipe end attached closed casing, e.g., faucet

124
210/448

Single open-end-type filter element

225
210/437

Central internal liquid receiver, e.g., tube

228
210/441

Attached to casing

106
210/442

Head and base connected

56
210/438

Imperforate central liquid tube

156
210/439

Axial flow through filter element

73
210/440

Inlet and outlet at same end

494
210/445

Clamped in casing joint

319
210/454

Filter element attached to closure

139
210/453

Filter element clamped between closure and end wall

229
210/450

Gasket within casing or spaced removable end members

797
210/443

Inlet and outlet at same end

467
210/444

Filter suspended from head

336
210/451

Internal fixed shoulder supporting filter element

263
210/452

Single open-end-type filter element

202
210/436

Vented

385
210/247

Filtrate splash plate and/or deflector

94
210/DIG.9

Floating cover

24
210/97

Flow, fluid pressure or material level, responsive

582
210/136

Check valve

623
210/109

Discharge of treated material

265
210/117

Check valve controlled

162
210/119

Float type

37
210/118

Non-closing, e.g., sand valve

5
210/112

Heavier constituent

83
210/114

By treated liquid accumulation

80
210/113

By weight of solids

22
210/115

With lighter constituent outlet control

68
210/116

Permitted by filtrate accumulation

40
210/111

Responsive to prefilt accumulation or filter clogging

74
210/110

With separator inlet control

138
210/103

Diverse sensing means

233
210/104

Responsive to material level

498
210/105

With control for auxiliary liquid inlet

69
210/106

Filter cleaning

167
210/108

Backwash or blowback

342
210/107

Rotary movement of filter or mechanical cleaner

128
210/121

Float

174
210/122

Controls movable separator

126
210/123

Controls valve

162
210/127

Additional fluid inlet control

41
210/124

Controls flow between two separators

25
210/128

Float in receptacle other than that of separator

68
210/129

In flow between inlet and separator

20
210/126

Float in separate rehabilitating fluid tank

14
210/125

Separator between float and valve

11
210/100

Flow cut-off requiring reset

77
210/98

Fluid current controlled cyclic system

102
210/130

Fluid pressure responsive by-pass

322
210/131

By movement of separation medium

69
210/133

In inlet and outlet closure header

57
210/132

With additional separation or treating means

85
210/137

Maintaining stream pressure or flow

435
210/134

Plural elements controlled

300
210/135

Including manually controlled element

27
210/99

Prefilt deverting to drain by prefilt accumulation

16
210/102

Programming plural units

41
210/101

Proportionate feed means

297
210/120

Vent control

162
210/513

Gravitational separator

224
210/532.1

Heavier constituent trap, chamber, or recess

538
210/533

Closure or valve controlled discharge

133
210/536

In side wall of separator

49
210/534

In sloping recess

101
210/535

Downstream of separator

33
210/537

With discharge means for two or more lighter constituents

73
210/532.2

Septic tank

300
210/538

Lighter constituent trap

191
210/539

Gas vent or bypass

148
210/540

With discharge port

471
210/519

Material supply distributor

392
210/520

Rotatable

47
210/523

Mechanical constituent mover

201
210/524

Diverse serial

29
210/526

Endless belt or chain

131
210/528

Horizontally rotating scraper

128
210/531

Elevatable scrapers

32
210/529

Polygonal container and correlating mover

4
210/530

Tank rim-supported carriage

43
210/527

Rectilinearly movable supporting means

94
210/525

Scum sediment removal

209
210/514

Portable invertible, e.g., milk and cream separator

59
210/516

Resilient deformable isolator

174
210/517

Hinged to handle

5
210/518

Sectional isolator

87
210/515

Selective withdrawal of constituents

83
210/521

Superposed compartments or baffles, e.g., parallel plate type

648
210/522

Each with lighter constituent discharge

227
210/929

Hemoultrafiltrate volume measurement or control processes

150
210/511

Liquid as separating medium

269
210/222

Magnetic

1017
210/223

With additional separator

473
210/902

Materials removed

44
210/917

Color

176
210/911

Cumulative poison

143
210/912

Heavy metal

782
210/913

Chromium

233
210/914

Mercury

179
210/915

Fluorine containing

97
210/903

Nitrogenous

703
210/904

-cn containing

160
210/905

Protein

88
210/916

Odor (including control or abatement)

233
210/908

Organic

542
210/909

Aromatic compound (e.g., pcb, phenol, etc.)

400
210/910

Nonbiodegradable surfacant

23
210/906

Phosphorus containing

394
210/907

Phosphate slimes

68
210/918

Miscellaneous specific techniques

27
210/921

Flow equalization or time controlled stages or cycles

42
210/922

Oil spill cleanup (e.g., bacterial, etc.)

90
210/925

Using chemical agent

157
210/923

Using mechanical means (e.g., skimmers, pump, etc.)

502
210/924

Using physical agent (e.g., sponge, mop, etc.)

287
210/919

Using combined systems by merging parallel diverse waste systems

89
210/920

Using combined systems of sequential local and regional or municipal sewage systems

40
210/926

Using oxidation ditch (e.g., carousel, etc.)

86
210/542

Miscellaneous

112
210/930

Paint detackifying

88
210/928

Paper mill waste (e.g., white water, black liquor, etc.) treated

269
210/DIG.13

Part flow-full flow

47
210/263

Particulate material type separator, e.g., ion exchange or sand bed

273
210/285

Embedded baffle

57
210/286

Vertical

78
210/268

Gravity flow of particles type

98
210/291

Particular liquid receiving means or foraminous bed retainer

187
210/293

Floor type, e.g., false bottom

161
210/292

Hood or top protector type

21
210/283

Pervious divider between and contacting beds

189
210/282

Removable cartridge or hand-manipulated container

809
210/264

Selective units or compartments

194
210/284

Spaced beds

339
210/267

Trunnion mounted casing

30
210/265

With gravitational separator

134
210/290

With multi-layer beds

243
210/269

With rehabilitation means

206
210/275

Backwash or blowback means

287
210/277

Flow controller external of closed casing

55
210/278

Multi-way valve unit

89
210/279

With embedded fluid distributor

142
210/276

With mechanical agitator or residue remover

22
210/274

Including means to apply gas to bed

194
210/270

Movable means for particle pickup and redeposit

16
210/271

Surface traversing type

27
210/273

Moving fluid distributor

22
210/272

Rotating on stationary axis

15
210/281

With access opening to normally closed casing

25
210/280

With agitator

25
210/266

With spaced non-particulate separating means

632
210/287

Within flow line or flow line connected closed casing

160
210/288

Conduit through bed, inlet and outlet at same end of casing

116
210/289

With particular liquid receiving means or foraminous bed retainer

211
210/189

Plural chambers with movement of granules therebetween

181
210/322

Plural distinct separators

92
210/323.1

Filters

268
210/344

Abutted alternating medium and pan type receiver

43
210/343

Alternating oppositely opening liquid distributors

15
210/335

In series for prefilt flow

307
210/339

Internal flange supporting filter element

46
210/337

Nested units

60
210/338

Concentric filter elements

143
210/336

Tortuous path

72
210/324

Movable separating elements

56
210/330

Connected for group operation

150
210/331

Spaced filter wall type, e.g., multiple hollow leaves

194
210/326

Drum type on parallel axis

29
210/328

Pivotally mounted sections

34
210/325

Planetary

16
210/327

Plural cleaners and plural movable elements

57
210/329

Relatively movable

39
210/342

One element within another

156
210/340

Parallel filters with flow controller

203
210/341

Individually controlled for removal with common receiver

74
210/345

Radial or radially connected to central header

93
210/346

Spaced wall-type filters

257
210/347

Central header

100
210/323.2

Tubular

553
210/332

With residue removal or liquid agitation

179
210/334

Alternating filter and residue remover

55
210/333.01

Backwash or blowback

269
210/333.1

Sequential backwash

133
210/244

Portable receptacle with hood or closure

111
210/245

Attached variable flow controller

21
210/246

Limited opening cover

7
210/600

Processes

115
210/749

Chemical treatment

658
210/757

By chemical reduction

362
210/758

By oxidation

696
210/763

Catalytic

396
210/761

Liquid phase high temperature and pressure (e.g., "wet air", etc.)

230
210/762

Catalytic

87
210/760

Utilizing ozone

684
210/759

Utilizing peroxy compound (e.g., hydrogen peroxide, peracid, etc.)

489
210/764

Destroying microorganisms

1104
210/750

Including degassing

300
210/765

Including liquid recirculation

268
210/766

Including temperature change

178
210/752

Plural spaced feedings

174
210/753

Utilizing halogen or halogen containing material

167
210/754

Chlorine or bromine containing

487
210/756

Hypochlorite

227
210/755

Organic

194
210/656

Chromatography

2363
210/659

Including liquid flow diversion

494
210/658

Utilizing paper or thin layer plate

120
210/657

Utilizing rotating column

107
210/633

Extracting utilizing solid solute

61
210/739

Including controlling process in response to a sensed condition

890
210/740

Density or specific gravity sensing

67
210/746

Electrical property sensing

265
210/744

Level sensing

392
210/743

Ph sensing

215
210/741

Pressure sensing

429
210/742

Temperature sensing

174
210/745

Turbidity or optically sensing

254
210/747

Including geographic feature (e.g., drainage ditch, septic, pond)

1027
210/660

Ion exchange or selective sorption

637
210/662

And liquid testing or volume measuring

246
210/661

By passing through suspended bed

230
210/663

Including diverse separating or treating of liquid

287
210/668

By chemically modifying or inhibiting dispersed constituent

225
210/664

By distilling or degassing

133
210/665

By making an insoluble substance or accreting suspended constituents

157
210/667

Utilizing aluminum, calcium, or iron containing agent

149
210/666

Utilizing organic agent

108
210/669

Prior to ion exchange or sorption

397
210/670

Including rehabilitating or regenerating exchange material or sorbent

550
210/672

Fractional, selective, or partial type

68
210/678

Including liquid flow direction change

100
210/671

Of oil sorbent material

87
210/675

Rehabilitating or regenerating in diverse zone or chamber

108
210/676

Continuous cyclic process

109
210/677

Using conserved or recirculated fluid

153
210/673

Utilizing gas, water, or chemical oxidizing or reducing agent

273
210/674

Utilizing organic regenerant

140
210/681

Removing ions

406
210/683

Anions

345
210/685

Including cation

161
210/686

Utilizing mixed bed or amphoteric material

109
210/684

Metal complexed (e.g., chromate, ferricyanide, chlorplatinate, etc.)

180
210/687

Calcium or magnesium (e.g., hardness, water softening, etc.)

196
210/688

Heavy metal

800
210/682

Radioactive

335
210/690

Sorbing organic constituent

258
210/691

From aqueous material

451
210/694

Utilizing activated carbon

390
210/692

Utilizing synthetic resin

265
210/693

Oil removed

172
210/689

Sorbing water from diverse liquid

118
210/679

Utilizing exchange or sorbent material associated with inert material

542
210/680

Including oil sorbent

89
210/634

Liquid/liquid solvent or colloidal extraction or diffusing or passing through septum selective as to material of a component of liquid; such diffusing or passing being effected by other than only an ion exchange or sorption process

964
210/644

Diffusing or passing through septum selective as to material of a component in liquid/liquid solvent or colloidal extraction

329
210/645

Biological fluid (e.g., blood, urine, etc.)

686
210/646

Hemodialysis

656
210/647

Maintaining critical concentration(s)

164
210/648

Including regenerating or rehabilitating the extracting liquid in liquid/liquid solvent or colloidal extraction

63
210/649

Diffusing or passing through septum selective as to material of a component of liquid

240
210/650

Filtering through membrane (e.g., ultrafiltration)

1077
210/652

Hyperfiltration (e.g., reverse osmosis, etc.)

775
210/653

Utilizing specified membrane material

240
210/655

Cellulosic

54
210/654

Synthetic resin

308
210/651

Removing specified material

1256
210/642

Extracting water from brine utilizing liquid/liquid solvent or colloidal extraction

43
210/636

Including cleaning or sterilizing of apparatus

463
210/638

Including ion exchange or other chemical reaction

872
210/639

Including prior use of additive (e.g., changing ph, etc.)

552
210/637

Including regulating pressure to control constituent gradient at membrane or to prevent rupture of membrane

176
210/635

Liquid/liquid or gel type (i.e., jellylike) chromatography

1083
210/640

Passing through membrane in vapor phase

489
210/643

Utilizing liquid membrane (e.g., emulsion) in liquid/liquid solvent or colloidal extraction

110
210/641

Utilizing plural diverse membranes

277
210/702

Making an insoluble substance or accreting suspended constituents

294
210/709

Controlling process in response to stream condition

250
210/703

Effecting flotation

334
210/704

Including chemical addition (with or without bouyancy gas)

116
210/705

Chemically specified precipitant, coagulant, or flocculant

273
210/706

And significant characteristic of the bouyancy gas, other than mere addition of same

51
210/707

Generating gas in situ

42
210/738

Including agitation

339
210/719

Including chemical reduction

170
210/720

Of chromium material

66
210/718

Including degassing

169
210/708

Including emulsion breaking

480
210/721

Including oxidation

354
210/722

Of iron or manganese material

121
210/712

Including recycling

440
210/713

Of separated solids

196
210/716

Including step of manufacturing inorganic treating agent

157
210/717

In situ

127
210/737

Including temperature change

355
210/714

Seeding

203
210/715

Utilizing sludge or floc blanket

60
210/710

Treating the insoluble substance

340
210/711

For recovery of a treating agent

157
210/729

Utilizing organic precipitant

279
210/730

From natural source or chemical modification thereof

198
210/731

Starch

63
210/732

Synthetic polymer

208
210/733

Acrylic

109
210/734

Nitrogen containing (e.g., amine, azo, etc.)

516
210/735

Nitrogen containing (e.g., amine, azo, etc.)

313
210/736

Derived from alkyl halide or epihalophydrin reactant

114
210/723

Utilizing precipitant, flocculant, or coagulant, each with accelerator or with each other or plural precipitants, flocculants, or coagulants

307
210/728

Including organic agent

512
210/724

Regulating ph

618
210/725

Utilizing organic precipitant

345
210/726

Sequential introduction

277
210/727

Including organic agent

548
210/696

Preventing, decreasing, or delaying precipitation, coagulation or flocculation

237
210/697

Utilizing inorganic phosphorus agent

134
210/698

Utilizing organic agent

419
210/701

Acrylic polymer

371
210/699

Phosphorus containing

248
210/700

Nitrogen containing

258
210/767

Separating

1059
210/805

And recirculating liquid

814
210/787

Cyclonic, or centrifugal (e.g., whirling or helical motion or by vortex, etc.)

851
210/788

Introducing liquid tangentially

355
210/789

Isolating layer

278
210/779

Discharging residue to prefilt

31
210/790

Dividing and recombining

115
210/799

Filtering immiscible liquids

232
210/780

Including movement of filter during filtration

235
210/781

Centrifugally extracting

288
210/782

Blood

415
210/785

Cleaning filter utilizing wave energy (e.g., vibrating, pulsating, etc.)

102
210/786

Of particulate bed (e.g., fluidized or moving bed, etc.)

58
210/783

Rotating belt

176
210/784

Rotating drum

180
210/777

Including precoating filter medium with filter aid

205
210/778

With or by addition to prefilt

156
210/773

Including preliminary conversion to liquid state

97
210/808

Including specified pressure change

238
210/774

Including temperature change

781
210/775

Thermal diffusion

14
210/768

Including treating separated solids

196
210/769

Destroying cake or solid component

147
210/770

Including drying (e.g., by squeezing or heating, etc.)

432
210/771

By gas contact

151
210/772

Washing with a fluid other than the prefilt

209
210/806

Plural separating

952
210/791

Rehabilitating or regenerating filter medium

511
210/797

By diverse fluid

145
210/798

Reverse flow

191
210/792

Particulate bed

84
210/796

Includng mechanical agitation

21
210/793

Reverse flow

122
210/794

Including addition of diverse fluid

81
210/795

Expanded bed

47
210/776

Skimming

333
210/800

Utilizing gravitational force

414
210/804

And additional diverse separation

309
210/801

Including change of mainstream flow direction

196
210/802

Utilizing parallel separation passages

164
210/803

Including specified feature of settled solids removal

244
210/807

Utilizing particulate bed

218
210/632

Treating by enzyme

189
210/601

Treatment by living organism

283
210/606

Adding enzyme or releasing same by treating microorganism

137
210/620

Aerobic treatment

495
210/630

And anaerobic treatment

373
210/629

And internally circulating the liquid

294
210/621

Recirculating to prior step

161
210/622

Of separated liquid

211
210/623

Of sludge or separated solid

165
210/624

And returning to or withdrawing from diverse treating zones

123
210/626

To mainstream oxygenation (e.g., activated sludge, etc.)

230
210/628

Utilizing mechanical aeration means

51
210/627

Utilizing specific oxidant, other than air alone (e.g., oxygen-enriched air, ozone, peroxide, etc.)

78
210/625

Treating outside mainstream

98
210/605

Anaerobically, with subsequently aerobically treating liquid

591
210/631

And additional treating agent other than mere mechanical manipulation (e.g., chemical, sorption, etc.)

769
210/612

And regulating temperature during biological step

184
210/613

Digesting sludge

167
210/614

Controlling process in response to stream constituent or reactant concentration

361
210/607

Dividing, treating, and recombining liquid

122
210/610

Including adding ancillary growth medium for microorganism

587
210/611

For or with specific microorganism

351
210/603

Including collecting or storing gas (e.g., fuel, carbon monoxide, etc.)

532
210/604

And reusing oxidant

57
210/609

Including dewatering sludge

232
210/602

Including plant or animal of higher order

338
210/608

Regulating floating constituent

115
210/615

Utilizing contact surfaces supporting microorganism (e.g., trickling filter, etc.)

456
210/616

Particulate media

264
210/617

In bed form

464
210/618

And rehabilitating or regenerating same

144
210/619

Rotating contactor

98
210/695

Using magnetic force

773
210/748

Utilizing electrical or wave energy (directly applied to liquid or material being treated)

1418
210/194

Recirculation

445
210/197

From bottom of separator

349
210/196

Of filtrate

436
210/195.1

Serially connected distinct treating or storage units

831
210/195.3

With sediment recycle means directly to main stream

317
210/195.4

Means is baffle slot

63
210/195.2

With semipermeable membrane, e.g., dialyzer, etc.

540
210/224

Sectional chamber press type

67
210/227

Medium clamped in joint

70
210/229

Imperforate base recess in plate

32
210/228

With spacing frame

57
210/231

Plates or frames

194
210/226

With porous filler

12
210/230

With repair or assembling means

157
210/225

With residue removal or liquid agitation

137
210/252

Serially connected distinct treating with or without storage units

389
210/255

Cascade

142
210/259

Diverse

999
210/260

Including multiple operation unit

173
210/262

On different levels

219
210/261

One unit supports another

148
210/256

One unit inside another

263
210/253

Parallel

167
210/254

With by-pass

138
210/258

With pump, gas pressure or vacuum source

795
210/257.1

With storage unit

620
210/257.2

Having membrane

636
210/901

Specified land fill feature (e.g., prevention of ground water fouling)

92
210/153

Structural installation

72
210/172

Ancillary to storage tank

212
210/167

Closed circulating systems

583
210/169

Aquarium or swimming pool

1069
210/168

Lubrication

338
210/154

Flume stream type

72
210/160

Endless belt strainer

81
210/162

Fixed strainer

278
210/156

Fluid stream or residue operated

39
210/157

Revolving cylindrical strainer

14
210/155

Plural or diverse screens

107
210/161

Revolving strainer

50
210/159

With cleaner and means to remove residue therefrom

142
210/158

With cleaner for movable strainer

77
210/170

Geographic (e.g., drainage ditch, septic, pond)

1188
210/163

Grated inlet surface drain

315
210/166

Concentric guard ring or rib

54
210/164

Flat grating at surface level

239
210/165

With subsurface weep means

35
210/171

Machinery

166
210/512.1

Tangential flow or centrifugal fluid action

1025
210/512.2

Multiple cyclone

227
210/512.3

With movable means affecting flow

185
210/DIG.17

Twist-on

272
210/900

Ultra pure water (e.g., conductivity water)

148
210/85

With alarm, indicator, register, recorder, signal or inspection means

777
210/90

Fluid pressure responsive

529
210/93

In effluent conduit

80
210/86

Material level or thickness responsive

483
210/91

Position or extent of motion

164
210/87

Responsive to fluid flow

387
210/88

Meter-controlled cyclic systems

37
210/89

With time control

40
210/92

Test valve

14
210/94

Transparent

433
210/95

Sight glass

135
210/248

With drip, overflow or content draining feature

379
210/190

With external supply means for regenerating medium, e.g., water softening system

113
210/191

With pump, injector or siphon

48
210/188

With gas separator

698
210/150

With gas-liquid surface contact means

786
210/151

With separator

600
210/175

With heater or heat exchanger

402
210/182

Diverse separators

143
210/183

Common casing coaxial with heater

21
210/181

Flow line connected in series with distinct separator

349
210/184

For filter

248
210/186

External of casing

153
210/185

Imbedded or between filter media

40
210/176

Thermal diffusion

19
210/180

Vapor or gas removal

410
210/179

With mechanical agitator or movable separator

102
210/177

With treating fluid addition

170
210/178

With mechanical agitator or movable separator

74
210/187

Within gravitational separator

122
210/198.1

With means to add treating material

754
210/198.2

Chromatography

2450
210/198.3

Thin layer, e.g., plate, etc.

116
210/209

Directly applied to separator

296
210/218

Gas removed from closed tank

253
210/216

Moving filter medium

26
210/217

Drum

28
210/220

Submerged fluid inlet

902
210/221.1

With outlet at surface, e.g., froth flotation, etc.

180
210/221.2

And gas injecting means other than by mechanical agitation

738
210/210

To interior of moving filter, e.g., drum

24
210/211

Through separator supporting rotary shaft

10
210/213

With coaxial rotary impeller or distributor

10
210/215

With effluent dividing means

5
210/212

With stationary casing closure feature

6
210/214

With stationary mount for movable distributor

3
210/219

With mechanical agitator

310
210/200

Plural distinct separators

45
210/203

Filters

180
210/204

Sectional chamber press type

6
210/201

Serially connected

133
210/202

Diverse type

680
210/199

Spaced along flow path

470
210/205

With distinct reactor tank, trough or compartment

931
210/206

Chemical holder in series with separator

513
210/207

Within gravitational separator

174
210/208

With mechanical agitator

128
210/241

With movable support

454
210/242.1

Float

497
210/242.2

With aerating means

199
210/242.3

With oil water skimmer

474
210/242.4

With oil water sorption means

128
210/193

With precoat adding or applying means

140
210/192

With preliminary chemical manufacture

590
210/141

With program actuator

121
210/142

Plural treating units or sections sequentially controlled

89
210/232

With repair or assembling means

2127
210/237

Hoist or handle means

156
210/238

Hand manipulable

485
210/233

Piercing or closure knock out means

36
210/235

Placement of container opens flow controller

140
210/234

Removable treatment part with normally disabled flow controller

189
210/236

Sliding or rolling on guide means

251
210/138

With time control

420
210/139

Of additional fluid

108
210/140

Preparation for treating operation

81
 
 
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