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)/(183) heterojunction device (184) light responsive structure (186) avalanche photodetection structure

Hierarchy/Derived subclasses

257 / 183

-> 184

-> 186

uspto searches

Patent Apps in 257/186

Granted Patents in 257/186

Use the links above or do an advanced search in ppubs for:
(257/186.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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