USPC Class Details

Description: 501 compositions: ceramic / 501 compositions: ceramic/(1) ceramic compositions (134) titanate, zirconate, stannate, niobate, or tantalate or oxide of titanium, zirconium, tin, niobium, or tantalum containing (e.g., dielectrics, etc.) (135) alkaline earth or magnesium containing (136) titanate containing (137) barium titanate

Hierarchy/Derived subclasses

501 / 1	-> 134	-> 135	-> 136	-> 137	-> 138
					-> 139

uspto searches

Patent Apps in 501/137

Granted Patents in 501/137

Use the links above or do an advanced search in ppubs for:
(501/137.ccls. or 501/138.ccls. or 501/139.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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