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APPLICATION OF ZIEGLER

Patent Appeal No. 7613.

363 F.2d 885 (1966)

Application of Karl ZIEGLER, Heinz Breil, Erhard Holzkamp and Heinz Martin.

United States Court of Customs and Patent Appeals.

Rehearing Denied October 6, 1966.

Attorney(s) appearing for the Case

Burgess, Dinklage & Sprung, Arnold Sprung, New York City, for appellants.

Joseph Schimmel, Washington, D. C., (Raymond E. Martin, Washington, D. C., of counsel) for the Commissioner of Patents.

Before RICH, Acting Chief Judge, and MARTIN, SMITH, and ALMOND, Judges, and Judge WILLIAM H. KIRKPATRICK.

ALMOND, Judge.

This is an appeal from the decision of the Patent Office Board of Appeals affirming the rejection of claims 1-8 in appellants' application1 entitled "Purification of Olefin Polymers." No claim has been allowed.

Appellants' invention relates to the purification of polyethylene, obtained by polymerization using a "Ziegler" catalyst, by washing with a C1

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