USPC Class Details – HistoricIP

Description: 429 chemistry: electrical current producing apparatus, product, and process / 429 chemistry: electrical current producing apparatus, product, and process/(400) fuel cell, subcombination thereof, or method of making or operating (523) electrode structure or composition (532) having an inorganic matrix, substrate, or support

Hierarchy/Derived subclasses

429 / 400	-> 523	-> 532	-> 533
			-> 534

uspto searches

Patent Apps in 429/532

Granted Patents in 429/532

Use the links above or do an advanced search in ppubs for:
(429/532.ccls. or 429/533.ccls. or 429/534.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.