In re Eisenhut

This is an appeal from a decision of the Patent Office Board of Appeals, affirming the examiner’s rejection of claims 19, 23 and 25 to 33 as unpatentable over the prior art, in appellant’s application serial No. 217,879, filed March 27, 1951, for “Process for the Manufacture of Washable, Cloth-Like Material From Cellulose Fibres Without Spinning or Weaving.” The foregoing claims are the only claims remaining in the case.

At oral argument, counsel for appellant admitted that the essence of his alleged invention was set forth in claim 19; that the ancillary details included in claims 23 and 25…