In re Britton

This is an appeal from a decision of the Board of Appeals of the United States Patent Office, affirming a decision of the examiner rejecting all of the claims of appellant’s application for a patent, 18 in number, for lacle of patentability over the cited prior art.

Claims 1 and 5 are illustrative and read as follows:

1. An infusible heat insulating plastic composition including respectively approximately four and three parts of oxid and chlorid of the same metal, approximately two and one-half parts of inert cellular material, approximately one-fourth part of glue, and approximately three and…