Application of Thomas F. Doumani and Hal C. Huffman

WORLEY, Chief Judge.

This appeal is from the decision of the Board of Appeals of the United States Patent Office affirming the Primary Examiner’s rejection of claims 17 to 29, inclusive, of appellants’ application, No. 214,022, for a patent on a hydrocarbon conversion process and catalyst. Claims 18, 21, 24, and 29 are representative of the appealed claims and read:

“18. The catalyst of claim 21 wherein said carrier comprises co-precipitated silica-alumina gel containing between about 1% and 15% by weight of silica and between about 85 and 99% by weight of alumina.

“21. A hydrocarbon conversion…