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Class Information
Number: 527/101
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Synthetic resins (class 520, subclass 1) > From reactant which is a cellular material derived from plant or animal source and is other than diatomaceous earth, blood, cotton, or farinaceous flour, e.g., citrus pulp, walnut shell flour, etc. > Animal derived, e.g., hair, leather, horn, etc.
Description: Subject matter wherein the reactant is a cellular material derived from an animal source, e.g., hair, leather, fur, horn, etc.

Sub-classes under this class:

Class Number Class Name Patents
527/102 With ethylenic reactant 22

Patents under this class:

Patent Number Title Of Patent Date Issued
6391939 Collagenic material useful in particular for preventing post-operative adhesions May. 21, 2002
5763557 Grafting of a polymer onto cellophane by ultrasonic induced free radical polymerization Jun. 9, 1998
4267235 Polyglutaraldehyde microspheres May. 12, 1981
4182695 Polyamide-fixed biologically active protein Jan. 8, 1980
4125631 Preparation for the manufacture of films comprising a collagenous material and liquid reaction product of a high molecular weight water-insoluble, organic material Nov. 14, 1978

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