Application of Raymond Wynkoop and Shirley C. Bartlett, Jr

RICH, Judge.

This appeal is from a decision of the Patent Office Board of Appeals1 affirming the examiner’s rejection of claims 1-4 in application serial No. 209,345, filed July 12,1962, entitled “Transformer Oil.” No claim has been allowed.

The invention is a transformer oil with good resistance to oxidation, especially in the presence of metals. It functions satisfactorily without the addition of oxidation inhibitors. These inhibitors are apparently suspect in the industry. The marketability of a transformer oil is, therefore, enhanced if its stability is not dependent on them.

Claim 1 is…