[Download] "Central States Life Ins. Co. v. Koplar Co." by Eighth Circuit Circuit Court of Appeals " Book PDF Kindle ePub Free
eBook details
- Title: Central States Life Ins. Co. v. Koplar Co.
- Author : Eighth Circuit Circuit Court of Appeals
- Release Date : January 17, 1935
- Genre: Law,Books,Professional & Technical,
- Pages : * pages
- Size : 66 KB
Description
This case involves a contest between systems employed in the dry cleaning of textile materials, such as soiled garments and the like. Appellant is the owner of three patents: The Fenton patent, No. 1,669,235, issued May 8, 1928; the Hatfield patent, No. 1,704,604, issued March 5, 1929; and the Hatfield-Alliott patent, No. 1,728,343, issued September 17, 1929. It is charged that three claims in each patent are infringed by the process employed by appellee Enterprise Cleaning Company, and recommended by appellee Filtration Products Company. The latter company accordingly sought and was granted leave to intervene, was made a defendant, and filed answer. The Fenton patent is for a "Dry Cleaning System." The specification states that the invention has for its object economy in dry cleaning, and that it will substantially do away with the necessity of distilling the dry-cleaning fluid. It embraces both the process and the apparatus for accmplishing the stated results. Only process claims are here involved, to wit, Nos. 1, 11, and 14. Claim 1 reads as follows: "In dry-cleaning, the herein described process which comprises subjecting soiled textile material containing greasy or oily material to the action of a volatile organic solvent which is substantially nonmiscible with water; drawing off the solvent with accumulated impurities; agitating the said solvent carrying impurities together with a solid material insoluble therein, which material possesses good adsorbing properties; separating the solid adsorbing material with accumulated impurities from the said solvent by filtration; and returning the solvent free from said adsorbing material and adsorbed impurities in a substantially continuous manner to the first-mentioned step of the process, until the said textile material has been cleaned to the desired extent."
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