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Class Information
Number: 501
Name: Compositions: ceramic >
Description: This is the generic class for:










Class Number Class Name No. of Patents
501/1

Ceramic compositions

327
501/153

Aluminum compound containing

911
501/87

Carbide or oxycarbide containing

573
501/93

Plural carbides (i.e., carbides of plural metals) containing

154
501/88

Silicon carbide

688
501/89

And aluminum compound

387
501/92

And boride, silicide, nitride, or oxynitride

503
501/90

And carbonaceous material

298
501/91

And different carbide

161
501/141

Clay containing (e.g., porcelain, earthenware, etc.)

257
501/143

And flint or feldspar

54
501/144

Kaolin (e.g., ball clay, fire clay, etc.) containing

121
501/142

And phosphorus (e.g., bone china, etc.)

34
501/145

Clay pretreatment

128
501/146

Chemical pretreatment

125
501/147

Using alkaline compound treating agent

94
501/148

Using organic substance as treating agent

198
501/150

Heat pretreatment

51
501/149

Water pretreatment

64
501/155

Composed of waste material

217
501/2

Devitrified glass-ceramics

85
501/5

Binary, ternary, quaternary, etc., metal silicate crystalline phase (e.g., mullite, diopside, sphene, plagioclase, slagcerams free of alumina, etc.)

291
501/6

Alkali metal aluminosilicate crystalline phase

83
501/7

Lithium aluminosilicate (e.g., spodumeme, eucryptite, petalite, etc.)

204
501/8

Divalent metal oxide aluminosilicate crystalline phase (e.g., anorthite, slagcerams, etc.)

131
501/9

Magnesium aluminosilicate (e.g., cordierite, etc.)

185
501/3

Halogen containing crystalline phase (e.g., fluormica, etc.)

105
501/10

Nonsilica and nonsilicate crystalline phase (e.g., spinel, barium titanate, etc.)

279
501/4

Silica containing crystalline phase (e.g., stuffed quartz, crystobalite, etc.)

266
501/140

Elemental sulfur containing

26
501/151

Fluorine containing

117
501/11

Glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions

121
501/33

Beads

112
501/34

Reflective

34
501/14

Enamels, glazes, or fusion seals (e.g., raw, fritted, or calcined ingredients)

155
501/21

Chemically specified frit compositions

298
501/25

Halogen containing

83
501/22

Lead containing

115
501/23

And titanium or zirconium

39
501/24

Phosphorous containing

112
501/26

Zinc containing

184
501/17

Frit plus material other than glass (e.g., color, opacifier, mill additions, etc.)

444
501/19

Free metal as other material

139
501/18

Titanium or zirconium compound as other material

147
501/20

With vehicle or suspending agent (i.e., slip)

226
501/15

Fusion seals (frit plus material other than glass)

286
501/16

Plural diverse frits

94
501/35

Fibers

294
501/36

Mineral fibers (e.g., slag wool, rock wool, mineral wool, etc.)

187
501/37

Optical fibers

200
501/38

Titanium or zirconium containing

152
501/32

Glass and material other than glass (e.g., crystal glass, opal glass, etc.)

778
501/27

Glass batch forming compositions (i.e., glass batch compositions)

146
501/30

Halogen containing

51
501/29

Pellet or agglomerate containing

60
501/28

Slag containing

22
501/31

Uncombined silica containing (e.g., sand)

56
501/12

Made by gel route

544
501/40

Nonoxide glasses (e.g., fluoride glasses, etc.)

149
501/41

Nonsilicate oxide glasses

119
501/49

Boron containing

146
501/52

And aluminum or beryllium

89
501/50

And yttrium or rare earth (i.e., elements with atomic numbers 39, 57-71, or 89+)

129
501/51

And zirconium, titanium, tantalum, or niobium

110
501/42

Germanium containing

90
501/43

Halogen containing

75
501/44

Fluorine and phosphorus containing

121
501/45

Phosphorus containing

223
501/48

And aluminum or beryllium

215
501/47

And boron

173
501/46

And titanium, zirconium, vanadium, tungsten, or molybdenum

154
501/39

Pore-forming

155
501/13

Radiation color change responsive

164
501/53

Silica containing

174
501/55

40 percent - 90 percent by weight silica

219
501/68

And aluminum or iron compound

271
501/69

And divalent metal oxide (e.g., oxides of zinc, cadmium, beryllium, alkaline earth metal, magnesium, etc.)

578
501/70

Calcium oxide containing

783
501/71

And chromium, nickel, or cobalt

283
501/65

And boron

333
501/66

And aluminum

631
501/67

And zinc or zirconium

417
501/72

And divalent metal oxide (e.g., oxides of zinc, cadmium, beryllium, alkaline earth metal, magnesium, etc.)

387
501/56

And halogen or nitrogen

147
501/57

Fluorine

187
501/58

And boron

76
501/59

And aluminum

208
501/60

And lead

87
501/62

And aluminum

152
501/61

And boron

123
501/63

And phosphorus, niobium, or tantalum

287
501/64

And yttrium or rare earth (i.e., elements with atomic numbers 39 or 57-71)

455
501/73

Less than 40 percent by weight silica

359
501/77

And boron

364
501/78

And rare earth (i.e., elements with atomic number 39 or 57-71)

299
501/79

And zinc

339
501/74

And lead

100
501/75

And boron

137
501/76

And zinc

150
501/54

More than 90 percent by weight silica

302
501/80

Pore-forming

399
501/84

By gas blowing, foaming agent, or in situ reactive gas generation

167
501/81

By use of organic combustible material

132
501/82

Of resin or vegetable origin material

77
501/83

Of cellulosic material

52
501/85

By volatilizing or heat expansion of water or other noncombustible material

84
501/94

Refractory

293
501/123

Alkaline earth metal compound containing

405
501/125

And aluminum compound

147
501/124

Hydraulic cement containing

98
501/96.1

Boride, silicide, nitride, oxynitride, carbonitride, or oxycarbonitride containing

330
501/98.4

Aluminum nitride containing (ain)

228
501/98.6

Composites (continuous matrix with dispersed phase)

91
501/98.5

With alkaline earth metal compound

81
501/96.3

Boride or silicide containing

336
501/96.4

Boron nitride containing

240
501/96.2

From organometallic precursor

157
501/98.1

Silicon aluminum oxynitride containing (i.e., siaion compounds)

108
501/98.3

Composites (continuous matrix with dispersed phase)

79
501/98.2

With rare earth or alkaline earth metal compound

85
501/97.1

Silicon nitride containing (si3n4)

304
501/97.4

Composites (continuous matrix with dispersed phase)

203
501/97.2

With trivalent metal compound (e.g., yttrium, rare earth, or aluminum compound, etc.)

303
501/97.3

With alkaline earth metal compound

142
501/96.5

Silicon oxynitride, silicon carbonitride, or silicon oxycarbonitride containing (i.e., siaobnc, siacbnc, or siaobccnd)

92
501/99

Elemental carbon containing

216
501/101

And alkaline earth metal or magnesium compound (e.g., dolomite, magnesium oxide, etc.)

95
501/100

And aluminum compound (e.g., clay, aluminum oxide, etc.)

166
501/95.1

Fiber or fiber containing

456
501/95.2

Composites (continuous matrix with dispersed fiber phase)

278
501/95.3

Whisker containing

184
501/108

Magnesium compound containing

239
501/118

And aluminum compound

155
501/119

Aluminum compound other than clay

287
501/120

Spinel or other aluminate

214
501/117

And chromium compound

64
501/112

And iron compound

84
501/114

And chromium compound

22
501/116

Chemical binder containing

9
501/115

Fused cast or fused material containing

16
501/113

Dolomite containing

26
501/111

And phosphorus compound

90
501/122

And silicon compound

143
501/121

Less than 90 percent by weight magnesium compound

98
501/109

With organic material in starting mixture

97
501/110

And iron or chromium compound

27
501/133

Silica containing

346
501/126

Trivalent metal compound (e.g., iron oxide, chromium oxide, trivalent rare earth oxide, etc.) containing

328
501/127

Aluminum compound (e.g., clay, aluminium oxide, etc.)

934
501/128

And silicon compound other than clay

586
501/130

And clay containing

53
501/131

Less than 40 percent by weight clay

38
501/129

And silica-clay mixtures

63
501/132

Chromium compound containing

122
501/102

Zirconium compound containing

193
501/103

Zirconium oxide

593
501/104

And alkaline earth metal or magnesium compound

294
501/105

And aluminum compound (e.g., clay, aluminum oxide, etc.)

394
501/106

Zirconium silicate

96
501/107

And aluminum compound (e.g., clay, aluminum oxide, etc.)

79
501/154

Silicon compound containing

453
501/86

Synthetic precious stones (e.g., single crystals, etc.)

120
501/134

Titanate, zirconate, stannate, niobate, or tantalate or oxide of titanium, zirconium, tin, niobium, or tantalum containing (e.g., dielectrics, etc.)

967
501/135

Alkaline earth or magnesium containing

508
501/136

Titanate containing

651
501/137

Barium titanate

492
501/138

And divalent metal oxide other than alkaline earth oxide or magnesium oxide

438
501/139

And trivalent metal oxide

482
501/152

Yttrium, lanthanide, actinide, or transactinide containing (i.e., atomic numbers 39 or 57-71 or 89+)

808
501/900

Optical glass (e.g., silent on refractive index and/or abbe number)

80
501/902

Having abbe number at least 70

18
501/901

Having r.i. at least 1.8

73
501/903

Having refractive index less than 1.8 and abbe number less than 70

180
501/904

Infrared transmitting or absorbing

168
501/906

Thorium oxide containing

10
501/905

Ultraviolet transmitting or absorbing

147
 
 
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