Application of Wilbur F. Chapman and John N. Cosby

RICH, Judge.

This appeal is from the decision of the Patent Office Board of Appeals affirming the examiner’s rejection of product claims 1 to 4 and process claims 5, 6 and 8 in application serial No. 819,106, filed June 9, 1959, for “High Strength Chlorinated Polyethylenes and Process for Preparing Them.” No claim is allowed.

Appellants invented improvements in the art of chlorinating polyethylenes. Their application points out that while it is known to chlorinate polyethylenes having a wide variety of structures and molecular weights to obtain resins useful in many applications, such prior art…