POTASH CO. OF AMERICA
v.
INTERNATIONAL MINERALS & CHEMICAL CORP.
United States Court of Appeals Tenth Circuit.https://leagle.com/images/logo.png
May 15, 1954.
Rehearing Denied July 3, 1954.
Attorney(s) appearing for the Case
James P. Hume, Chicago, Ill. (Patrick H. Hume, Washington, D. C., W. A. McGrew, Mason A. Lewis, Denver, Colo., and Roy H. Blackman, Jr., Carlsbad, New Mexico, on the brief), for appellant.
Charles H. Walker, New York City (Maxwell Barus, Henry J. Zafian, of Fish, Richardson & Neave, New York City, Cyril A. Soans, Francis A. Even, of Soans, Glaister & Anderson, Chicago, Ill., Morrison Shafroth, of Grant, Shafroth and Toll, Denver, Colo., and Caswell S. Neal, of Neal, Neumann and Neal, Carlsbad, New Mexico, on the brief), for appellee.
Before HUXMAN, MURRAH and PICKETT, Circuit Judges.
United States Court of Appeals Tenth Circuit.
PICKETT, Circuit Judge.
Potash Company of America1 was the owner of patents No. 2,046,312 (Anderson Reissue 21,566), Weinig 2,105,294 and Weinig 2,188,932. All three patents relate to various aspects of froth flotation processes for separating sylvite from potash bearing ore known as "sylvinite". The Anderson reissue patent is wholly devoted to this method, while the Weinig patents combine the process with a heat cycle method. The Anderson...
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