Masonite Corp. v. Celotex Co.

WOOLLEY, Circuit Judge.

Masonite Corporation, the owner of letters patent No. 1,663,505, issued March 2Q, *4521928 to William H. Mason for hard, grainless fiber products and process for making them, brought this action against the Celotex Company for infringement of product claims 5, 6 and 26 and process claims 14, 16, 29, 22 and 23. The trial court, after limiting the claims, found them not infringed and accordingly dismissed the bill. 1 F. Supp. 494. The plaintiff appealed.

As stated in the specification, the object of the invention is, to produce from “ligno-cellulose materials, such as…