In re Greider

This is an appeal from the decision of the Board of Appeals of the United States Patent Office affirming the decision of the Primary Examiner rejecting all of the claims (Nos. 1 to 13, inclusive) in appellants’ application .for a patent for an alleged invention relating to roofing and siding material, such as shingles.

Appellants’ application discloses a prepared shingle comprising a fabric foundation saturated with bituminous material, a layer composed of cork particles of substantial sise, and a layer of weather resisting grit surfacing material. The layer of cork granules serves to provide…