USPC Class Details – HistoricIP

Description: 423 chemistry of inorganic compounds / 423 chemistry of inorganic compounds/(1) treating mixture to obtain metal containing compound (62) group vb metal (v, nb, or ta) (65) forming insoluble substance in liquid

Hierarchy/Derived subclasses

423 / 1	-> 62	-> 65	-> 66
			-> 67

uspto searches

Patent Apps in 423/65

Granted Patents in 423/65

Use the links above or do an advanced search in ppubs for:
(423/65.ccls. or 423/66.ccls. or 423/67.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.