Application of Don G. Hutton and Christopher L. Wilson

WORLEY, Chief Judge.

The sole issue here is whether the Board of Appeals committed reversible error in sustaining the examiner’s rejection of claims 1 and 2, copied from a patent to Ebneth1 for purposes of interference, as not supported in appellants’ application.2

The subject matter is reflected in claim 2, to which we have added emphasis to indicate the precise method step in issue:

2. In the preparation of a solidified cellular polyurethane3 by a process which comprises mixing liquid components together in a mixing chamber and flowing the resulting mixture into a suitable shaping device while…