USPC Class Details

Description: 523 synthetic resins or natural rubbers -- part of the class 520 series / 523 synthetic resins or natural rubbers -- part of the class 520 series/() synthetic resins (class 520, subclass 1) (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 (400) process of forming a composition containing a nonreactive material (nrm) and a polymer containing more than one 1,2-epoxy group, or a preformed polymer derived from or admixed with a reactant containing more than one 1,2-epoxy group, or with a polymer derived from an epihalohydrin and a polyhydric phenol or polyol; or composition or product thereof (402) product contains water per se or water of hydration as designated nonreactive material (dnrm) (414) polymer contains more than one 1,2-epoxy group or one derived from reactant containing more than one 1,2-epoxy group is further derived from or reacted with organic nitrogen or sulfur (418) organic nitrogen compound contains n-(c)*-(c=o)- group where *= subscript 0,1,2 . . ., e.g., protein, etc.

Hierarchy/Derived subclasses

523 / 1-> 400-> nrm-> 402-> dnrm-> 414-> 418-> c

uspto searches

Patent Apps in 523/418

Granted Patents in 523/418

Use the links above or do an advanced search in ppubs for:
(523/418.ccls. or 523/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.
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