Carl OTTO, Appellant,
v.
KOPPERS COMPANY, Inc., a Delaware Corporation, and Wheeling Steel Corporation, a Delaware Corporation, Appellees.
United States Court of Appeals Fourth Circuit.https://leagle.com/images/logo.png
Argued April 12, 1957.
Decided July 10, 1957.
Attorney(s) appearing for the Case
W. Brown Morton, Jr., New York City (Robert McKay, Pennie, Edmonds, Morton, Barrows & Taylor, John E. Hubbell, Myron Cohen, Hubbell & Cohen, of New York City, Frank A. O'Brien, Jr., and O'Brien & O'Brien, Wheeling, W. Va., on brief), for appellant.
Jo. Baily Brown, Pittsburgh, Pa. (Brown, Critchlow, Flick & Peckham, Pittsburgh, Pa., Schmidt, Hugus & Laas, and Wright Hugus, Wheeling, W. Va., John M. Crimmins and Karl B. Lutz, Pittsburgh, Pa., on brief), for appellees.
Before PARKER, Chief Judge, and SOBELOFF and HAYNSWORTH, Circuit Judges.
United States Court of Appeals Fourth Circuit.
HAYNSWORTH, Circuit Judge.
This is a suit for infringement of Patent No. 2,599,067,1 for the production of ammonium sulphate, which was issued to the plaintiff, Otto, on June 3, 1952, upon an application filed March 15, 1948. From a judgment holding the patent invalid for anticipation, the plaintiff has appealed to this Court.
The claims of the patent relate to a method of producing ammonium...
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