In re Pinten

Almond, Judge.

This is an appeal from the decision of the Patent Office Board of Appeals, adhered to on reconsideration, affirming the rejection of claims 1-20 in appellants’ application entitled “Phenolic Resin Foams.”1 No claims have been allowed.

The invention relates to phenolic resin foams and the method of preparing such foams using low-boiling blowing agents in the presence of surface-active materials (surfactants) and acid hardening agents. Appellants disclose that through the use of a surfactant mixture of ethoxylated castor oil and ethoxylated nonyl phenol, the volume of the…