USPC Class Details

Description: 438 semiconductor device manufacturing: process / 438 semiconductor device manufacturing: process/(48) making device or circuit responsive to nonelectrical signal (57) responsive to electromagnetic radiation (64) packaging (e.g., with mounting, encapsulating, etc.) or treatment of packaged semiconductor (66) plural responsive devices (e.g., array, etc.) (67) assembly of plural semiconductor substrates

Hierarchy/Derived subclasses

438 / 48

-> 57

-> 64

-> 66

-> 67

uspto searches

Patent Apps in 438/67

Granted Patents in 438/67

Use the links above or do an advanced search in ppubs for:
(438/67.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.

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