In re Lilienfeld

This is an appeal from a decision of the Board of Appeals of the United States Patent Office, affirming a decision of the examiner, rejecting, for want of invention, claims 15 to 18, inclusive, and claims 25, 26, 27, and 28 of appellant’s application, no. 486604, filed January 11, 1921.

Claims 15, 17, and 25 are illustrative, and read as follows:

15. Alkali cellulose containing substantially over 60% caustic alkali, and not substantially less than 13% of water.

17. A moist alkali cellulose containing substantially over 33% of caustic alkali, and not substantially below 17% of water, the amount…