USPC Class Details – HistoricIP

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 (41) nonsilicate oxide glasses (45) phosphorus containing

Hierarchy/Derived subclasses

501 / 1	-> 11	-> 41	-> 45	-> 46
				-> 47
				-> 48

uspto searches

Patent Apps in 501/45

Granted Patents in 501/45

Use the links above or do an advanced search in ppubs for:
(501/45.ccls. or 501/46.ccls. or 501/47.ccls. or 501/48.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.