USPC Class Details

Description: 525 synthetic resins or natural rubbers -- part of the class 520 series / 525 synthetic resins or natural rubbers -- part of the class 520 series/() synthetic resins (class 520, subclass 1) (50) mixing of two or more solid polymers; mixing of solid polymer or sicp with sicp or spfi; mixing of sicp with an ethylenic agent; mixing of solid polymer with a chemical treating or ethylenic agent; or processes of forming or reacting; or the resultant product of any of the above operations (55) at least one solid polymer derived from ethylenic reactants only (154) with saturated aldehyde or aldehyde derivative (including methylol ethers or condensates) reactant or solid polymer thereof; or with solid copolymer derived from at least one aldehyde or aldehyde derivative reactant wherein at least one of the reactants forming the solid copolymer is saturated; or with spfi wherein at least one of the necessary ingredients is an aldehyde or aldehyde derivative reactant or with a reaction product thereof; or with sicp containing an aldehyde or aldehyde derivative (157) contacting with an amine, a material containing a n-c(=x)- or n-s(=o)- (x is chalcogen) reactant and an aldehyde or aldehyde derivative at least one of which is saturated, their condensate or solid polymer thereof (163) solid polymer derived from ethylenic reactants only containing a carboxylic acid, ester, or anhydride group

Hierarchy/Derived subclasses

525 / 50-> 55-> 154-> 157-> 163

uspto searches

Patent Apps in 525/163

Granted Patents in 525/163

Use the links above or do an advanced search in ppubs for:
(525/163.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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