USPC Class Details

Description: 501 compositions: ceramic / 501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (73) less than 40 percent by weight silica

Hierarchy/Derived subclasses

501 / 1	-> 11	-> 53	-> 73	-> 74	-> 75	-> 76
				-> 77	-> 78
					-> 79

uspto searches

Patent Apps in 501/73

Granted Patents in 501/73

Use the links above or do an advanced search in ppubs for:
(501/73.ccls. or 501/74.ccls. or 501/75.ccls. or 501/76.ccls. or 501/77.ccls. or 501/78.ccls. or 501/79.ccls.)

This will show what classes derive from the input. Ex: entering 43/42.24 shows the derived classes and the search that can be used to find patents or patent applications in those subclasses.

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