USPC Class Details

Description: 527 synthetic resins or natural rubbers -- part of the class 520 series / 527 synthetic resins or natural rubbers -- part of the class 520 series/() synthetic resins (class 520, subclass 1) (400) from lignin, tannin, or derivative reactant

Hierarchy/Derived subclasses

527 / 400	-> 401
	-> 403

uspto searches

Patent Apps in 527/400

Granted Patents in 527/400

Use the links above or do an advanced search in ppubs for:
(527/400.ccls. or 527/401.ccls. or 527/403.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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