Application of Norman A. Altmann and William H. Bureau

O’CONNELL, Acting Chief Judge.

This is an appeal from the decision of the Board of Appeals of the United States Patent Office affirming the Primary Examiner’s rejection, as unpatentable over the cited art of record, of claims 11 to 15, inclusive, in appellants’ application for a patent on a method of deinking waste paper. Claim 11, which is representative of the appealed claims, reads as follows:

“11. The method of deinking waste paper in cool or cold water without cooking and use of deinking chemicals, so as to reclaim a large per cent of the fiber content as clean pulp suitable for re-use in…