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Class 501 | COMPOSITIONS: CERAMIC |
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| 1 | CERAMIC COMPOSITIONS |
| 2 | Devitrified glass-ceramics |
| 3 | Halogen containing crystalline phase (e.g., fluormica, etc.) |
| 4 | Silica containing crystalline phase (e.g., stuffed quartz, crystobalite, etc.) |
| 5 | Binary, ternary, quaternary, etc., metal silicate crystalline phase (e.g., mullite, diopside, sphene, plagioclase, slagcerams free of alumina, etc.) |
| 6 | Alkali metal aluminosilicate crystalline phase |
| 8 | Divalent metal oxide aluminosilicate crystalline phase (e.g., anorthite, slagcerams, etc.) |
| 10 | Nonsilica and nonsilicate crystalline phase (e.g., spinel, barium titanate, etc.) |
| 11 | Glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions |
| 12 | Made by gel route |
| 13 | Radiation color change responsive |
| 14 | Enamels, glazes, or fusion seals (e.g., raw, fritted, or calcined ingredients) |
| 15 | Fusion seals (frit plus material other than glass) |
| 16 | Plural diverse frits |
| 17 | Frit plus material other than glass (e.g., color, opacifier, mill additions, etc.) |
| 18 | Titanium or zirconium compound as other material |
| 19 | Free metal as other material |
| 20 | With vehicle or suspending agent (i.e., slip) |
| 21 | Chemically specified frit compositions |
| 27 | Glass batch forming compositions (i.e., glass batch compositions) |
| 28 | Slag containing |
| 29 | Pellet or agglomerate containing |
| 30 | Halogen containing |
| 31 | Uncombined silica containing (e.g., sand) |
| 32 | Glass and material other than glass (e.g., crystal glass, opal glass, etc.) |
| 33 | Beads |
| 35 | Fibers |
| 36 | Mineral fibers (e.g., slag wool, rock wool, mineral wool, etc.) |
| 37 | Optical fibers |
| 38 | Titanium or zirconium containing |
| 39 | Pore-forming |
| 40 | Nonoxide glasses (e.g., fluoride glasses, etc.) |
| 41 | Nonsilicate oxide glasses |
| 42 | Germanium containing |
| 43 | Halogen containing |
| 45 | Phosphorus containing |
| 46 | And titanium, zirconium, vanadium, tungsten, or molybdenum |
| 47 | And boron |
| 48 | And aluminum or beryllium |
| 49 | Boron containing |
| 53 | Silica containing |
| 54 | More than 90 percent by weight silica |
| 55 | 40 percent - 90 percent by weight silica |
| 56 | And halogen or nitrogen |
| 60 | And lead |
| 63 | And phosphorus, niobium, or tantalum |
| 64 | And yttrium or rare earth (i.e., elements with atomic numbers 39 or 57-71) |
| 65 | And boron |
| 68 | And aluminum or iron compound |
| 69 | And divalent metal oxide (e.g., oxides of zinc, cadmium, beryllium, alkaline earth metal, magnesium, etc.) |
| 72 | And divalent metal oxide (e.g., oxides of zinc, cadmium, beryllium, alkaline earth metal, magnesium, etc.) |
| 73 | Less than 40 percent by weight silica |
| 80 | Pore-forming |
| 81 | By use of organic combustible material |
| 84 | By gas blowing, foaming agent, or in situ reactive gas generation |
| 85 | By volatilizing or heat expansion of water or other noncombustible material |
| 86 | Synthetic precious stones (e.g., single crystals, etc.) |
| 87 | Carbide or oxycarbide containing |
| 88 | Silicon carbide |
| 89 | And aluminum compound |
| 90 | And carbonaceous material |
| 91 | And different carbide |
| 92 | And boride, silicide, nitride, or oxynitride |
| 93 | Plural carbides (i.e., carbides of plural metals) containing |
| 94 | Refractory |
| 95.1 | Fiber or fiber containing |
| 96.1 | Boride, silicide, nitride, oxynitride, carbonitride, or oxycarbonitride containing |