USPC Class Details

Description: 524 synthetic resins or natural rubbers -- part of the class 520 series / 524 synthetic resins or natural rubbers -- part of the class 520 series/() synthetic resins (class 520, subclass 1) () processes of preparing a desired or intentional composition of at least one nonreactant material and at least one solid polymer or specified intermediate condensation product, or product thereof (class 523, subclass 1) (1) adding a nrm to a preformed solid polymer or preformed specified intermediate condensation product, composition thereof; or process of treating or composition thereof (59) coal, bituminous additive, extract, or derivative thereof; or oil shale; or fatty still residue dnrm (65) coal derived additive, e.g., lignite, etc.

Hierarchy/Derived subclasses

524 / 1-> 59-> 65-> 66

uspto searches

Patent Apps in 524/65

Granted Patents in 524/65

Use the links above or do an advanced search in ppubs for:
(524/65.ccls. or 524/66.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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