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) (8) ethylenically unsaturated reactant admixed with a preformed reaction product derived from: (a) at least one polycarboxylic acid, ester, or anhydride; (b) at least one polyhydroxy compound; and (c) at least one natural resin, protein, or biologically active polypeptide, or carbohydrate or derivative
Hierarchy/Derived subclasses
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Patent Apps in 525/8
Granted Patents in 525/8
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ppubs for:
(525/8.ccls. or 525/a.ccls. or 525/b.ccls. or 525/c.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.