The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 1997
Filed:
Jul. 07, 1994
William F Heins, Redmond, WA (US);
James C Nowak, Bellevue, WA (US);
Ionics, Incorporated, Watertown, MA (US);
Abstract
A method for enhancing solvent extraction of organic wastes from contaminated waste mixtures. A contaminated waste mixture is contacted with a solvent with high driving force for solvation of water, and most preferably with a solvent which is both anhydrous and which has an appreciable affinity for solvation of water. While the solvent is in contact with the contaminated waste mixture, a portion of the organic waste is dissolved in the solvent. Then, the solvated organic waste and residual solvent is removed from the contaminated waste mixture. Solvent is recovered, preferably by distillation, and is then dehydrated, prior to repeating the cycle. The technique substantially improves the degree of removal of certain organic wastes from contaminated waste mixtures, and has been demonstrated to be particularly useful for removal of pesticides from organic waste mixtures.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile