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)/(49) non-single crystal, or recrystallized, semiconductor material forms part of active junction (including field-induced active junction) (52) amorphous semiconductor material

Hierarchy/Derived subclasses

257 / 49	-> 52	-> 53	-> 54
			-> 55
			-> 56
		-> 57	-> 58
			-> 59
			-> 60
			-> 61
		-> 62
		-> 63

uspto searches

Patent Apps in 257/52

Granted Patents in 257/52

Use the links above or do an advanced search in ppubs for:
(257/52.ccls. or 257/53.ccls. or 257/54.ccls. or 257/55.ccls. or 257/56.ccls. or 257/57.ccls. or 257/58.ccls. or 257/59.ccls. or 257/60.ccls. or 257/61.ccls. or 257/62.ccls. or 257/63.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.

Display:

Back