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Classification Resources
 
Class   501COMPOSITIONS: CERAMIC
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[List of Pre Grant Publications for class 501 subclass 1][List of Patents for class 501 subclass 1]1 CERAMIC COMPOSITIONS
[List of Pre Grant Publications for class 501 subclass 2][List of Patents for class 501 subclass 2]2 Subclass 2 indent level is 1 Devitrified glass-ceramics
[List of Pre Grant Publications for class 501 subclass 11][List of Patents for class 501 subclass 11]11 Subclass 11 indent level is 1 Glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions
 [List of Pre Grant Publications for class 501 subclass 12][List of Patents for class 501 subclass 12]12 Subclass 12 indent level is 2 Made by gel route
 [List of Pre Grant Publications for class 501 subclass 13][List of Patents for class 501 subclass 13]13 Subclass 13 indent level is 2 Radiation color change responsive
[List of Pre Grant Publications for class 501 subclass 14][List of Patents for class 501 subclass 14]14 Subclass 14 indent level is 2 Enamels, glazes, or fusion seals (e.g., raw, fritted, or calcined ingredients)
[List of Pre Grant Publications for class 501 subclass 27][List of Patents for class 501 subclass 27]27 Subclass 27 indent level is 2 Glass batch forming compositions (i.e., glass batch compositions)
 [List of Pre Grant Publications for class 501 subclass 32][List of Patents for class 501 subclass 32]32 Subclass 32 indent level is 2 Glass and material other than glass (e.g., crystal glass, opal glass, etc.)
[List of Pre Grant Publications for class 501 subclass 33][List of Patents for class 501 subclass 33]33 Subclass 33 indent level is 2 Beads
[List of Pre Grant Publications for class 501 subclass 35][List of Patents for class 501 subclass 35]35 Subclass 35 indent level is 2 Fibers
 [List of Pre Grant Publications for class 501 subclass 39][List of Patents for class 501 subclass 39]39 Subclass 39 indent level is 2 Pore-forming
 [List of Pre Grant Publications for class 501 subclass 40][List of Patents for class 501 subclass 40]40 Subclass 40 indent level is 2 Nonoxide glasses (e.g., fluoride glasses, etc.)
[List of Pre Grant Publications for class 501 subclass 41][List of Patents for class 501 subclass 41]41 Subclass 41 indent level is 2 Nonsilicate oxide glasses
[List of Pre Grant Publications for class 501 subclass 53][List of Patents for class 501 subclass 53]53 Subclass 53 indent level is 2 Silica containing
[List of Pre Grant Publications for class 501 subclass 80][List of Patents for class 501 subclass 80]80 Subclass 80 indent level is 1 Pore-forming
 [List of Pre Grant Publications for class 501 subclass 86][List of Patents for class 501 subclass 86]86 Subclass 86 indent level is 1 Synthetic precious stones (e.g., single crystals, etc.)
[List of Pre Grant Publications for class 501 subclass 87][List of Patents for class 501 subclass 87]87 Subclass 87 indent level is 1 Carbide or oxycarbide containing
[List of Pre Grant Publications for class 501 subclass 94][List of Patents for class 501 subclass 94]94 Subclass 94 indent level is 1 Refractory
[List of Pre Grant Publications for class 501 subclass 95.1][List of Patents for class 501 subclass 95.1]95.1 Subclass 95.1 indent level is 2 Fiber or fiber containing
[List of Pre Grant Publications for class 501 subclass 96.1][List of Patents for class 501 subclass 96.1]96.1 Subclass 96.1 indent level is 2 Boride, silicide, nitride, oxynitride, carbonitride, or oxycarbonitride containing
[List of Pre Grant Publications for class 501 subclass 99][List of Patents for class 501 subclass 99]99 Subclass 99 indent level is 2 Elemental carbon containing
[List of Pre Grant Publications for class 501 subclass 102][List of Patents for class 501 subclass 102]102 Subclass 102 indent level is 2 Zirconium compound containing
[List of Pre Grant Publications for class 501 subclass 108][List of Patents for class 501 subclass 108]108 Subclass 108 indent level is 2 Magnesium compound containing
[List of Pre Grant Publications for class 501 subclass 123][List of Patents for class 501 subclass 123]123 Subclass 123 indent level is 2 Alkaline earth metal compound containing
[List of Pre Grant Publications for class 501 subclass 126][List of Patents for class 501 subclass 126]126 Subclass 126 indent level is 2 Trivalent metal compound (e.g., iron oxide, chromium oxide, trivalent rare earth oxide, etc.) containing
 [List of Pre Grant Publications for class 501 subclass 133][List of Patents for class 501 subclass 133]133 Subclass 133 indent level is 2 Silica containing
[List of Pre Grant Publications for class 501 subclass 134][List of Patents for class 501 subclass 134]134 Subclass 134 indent level is 1 Titanate, zirconate, stannate, niobate, or tantalate or oxide of titanium, zirconium, tin, niobium, or tantalum containing (e.g., dielectrics, etc.)
 [List of Pre Grant Publications for class 501 subclass 140][List of Patents for class 501 subclass 140]140 Subclass 140 indent level is 1 Elemental sulfur containing
[List of Pre Grant Publications for class 501 subclass 141][List of Patents for class 501 subclass 141]141 Subclass 141 indent level is 1 Clay containing (e.g., porcelain, earthenware, etc.)
 [List of Pre Grant Publications for class 501 subclass 151][List of Patents for class 501 subclass 151]151 Subclass 151 indent level is 1 Fluorine containing
 [List of Pre Grant Publications for class 501 subclass 152][List of Patents for class 501 subclass 152]152 Subclass 152 indent level is 1 Yttrium, lanthanide, actinide, or transactinide containing (i.e., atomic numbers 39 or 57-71 or 89+)
 [List of Pre Grant Publications for class 501 subclass 153][List of Patents for class 501 subclass 153]153 Subclass 153 indent level is 1 Aluminum compound containing
 [List of Pre Grant Publications for class 501 subclass 154][List of Patents for class 501 subclass 154]154 Subclass 154 indent level is 1 Silicon compound containing
 [List of Pre Grant Publications for class 501 subclass 155][List of Patents for class 501 subclass 155]155 Subclass 155 indent level is 1 Composed of waste material
 
CROSS-REFERENCE ART COLLECTIONS
 
[List of Pre Grant Publications for class 501 subclass 900][List of Patents for class 501 subclass 900]900 OPTICAL GLASS (E.G., SILENT ON REFRACTIVE INDEX AND/OR ABBE NUMBER)
 
FOREIGN ART COLLECTIONS
 
      FOR000          CLASS-RELATED FOREIGN DOCUMENTS
United States Patent and Trademark Office