(Download) "Enrichi v. United States." by Tenth Circuit. United States Court of Appeals * eBook PDF Kindle ePub Free
eBook details
- Title: Enrichi v. United States.
- Author : Tenth Circuit. United States Court of Appeals
- Release Date : January 14, 1954
- Genre: Law,Books,Professional & Technical,
- Pages : * pages
- Size : 52 KB
Description
Potash Company of America 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 forth 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 patent was issued July 7, 1936, and the Weinig patents, which were improvements on the Anderson patent, were issued a short time thereafter. This action was brought to enjoin alleged infringement of the three patents and for an accounting. The defense was invalidity, noninfringement and laches. After a trial on all the issues, the trial court held that the patents were valid and infringed but denied relief because of laches. We have carefully examined the voluminous record and concluded that the judgment must be affirmed.
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