USPC Class Details

Description: 438 semiconductor device manufacturing: process / 438 semiconductor device manufacturing: process/(142) making field effect device having pair of active regions separated by gate structure by formation or alteration of semiconductive active regions (186) having junction gate (e.g., jfet, sit, etc.) (192) vertical channel (193) multiple parallel current paths (e.g., grid gate, etc.)

Hierarchy/Derived subclasses

438 / 142

-> 186

-> 192

-> 193

uspto searches

Patent Apps in 438/193

Granted Patents in 438/193

Use the links above or do an advanced search in ppubs for:
(438/193.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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