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Class 527 - Synthetic resins or natural rubbers -- part of the class 520 series

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38 Subclasses


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Definition

Subject to all applicable provisions and limitations of the Class 520 Class Definition, this class provides for solid synthetic resins derived from at least one saturated material and from

A. a reactant which is a cellular material derived from a plant or animal source (other than diatomaceous earth, blood, cotton, or farinaceous flour),

B. a reactant which is a protein or biologically active polypeptide,

C. a reactant which is a carbohydrate or derivation thereof,

D. a lignin, tannin, or derivative thereof,

E. a reactant which is coal or bituminous material, an extract or derivative thereof, or a fatty still residue,

F. a reactant which is a natural resin or derivative thereof (other than tall oil or a derivative thereof).

 
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