USPC Class Details

Description: 257 active solid-state devices (e.g., transistors, solid-state diodes) / 257 active solid-state devices (e.g., transistors, solid-state diodes)/(79) incoherent light emitter structure (94) with heterojunction (95) with contoured external surface (e.g., dome shape to facilitate light emission)

Hierarchy/Derived subclasses

257 / 79-> 94-> 95

uspto searches

Patent Apps in 257/95

Granted Patents in 257/95

Use the links above or do an advanced search in ppubs for:
(257/95.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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