Application of Charles J. Esterhoy, Jr. And William D. Hunter, Jr

BALDWIN, Judge.

This is an appeal from the decision of the Patent Office Board of Appeals, adhered to on reconsideration, which affirmed the rejection of all claims in appellants’ application 1 as unpatentable in view of the prior art under 35 U.S.C. § 103.

THE INVENTION

The subject matter of the application on appeal relates to the so-called “wet-process” for the production of phosphoric acid. It appears from the record that the acid product of the above-mentioned process (which in essence consists in treating naturally-occurring phosphate rock with a strong mineral acid, such as sulphuric…