Chemical Separation Technology, Inc. v. United States

OPINION

ALLEGRA, Judge.

Chemical Separation Technology, Inc. (CST) and Sanford M. Stevenson (Mr. Stevenson) seek compensation from the United States, under 28 U.S.C. § 1498(a), for the unlawful use of two of their patents — U.S. Patent No. 4,749,497 (the ’497 patent) and U.S. Patent No. 5,370,800 (the ’800 patent)— both of which relate to the treatment of waste water. In this opinion, the third in a series, the court analyzes whether the government unlawfully used the patents at the Summitville Mine site in southern Colorado, and thereby owes plaintiffs damages. After carefully considering the…