In re Ayers

This is an appeal from the Board of Appeals of the United States Patent Office affirming the Primary Examiner’s final rejection of one of the claims (No. 22) of appellant’s application, serial No. 278,027, for patent ón a process of producing iron oxide.

Eleven claims stand allowed. It is said in the brief of the Solicitor for the Patent Office that these “define the process more specifically than cMm'22.”

The rejected claim reads:

22. In a process for producing red iron oxide l)y the decomposition of ferrous sulfate containing manganese sulfate as a contaminant, the steps which comprise heating…