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:
Jul. 06, 1999
Filed:
Mar. 10, 1997
Applicant:
Inventors:
Manilal S Dahanayake, Princeton Junction, NJ (US);
Yun Brian Yang, Wilton, CT (US);
Mark E Ventura, Freehold, NJ (US);
Assignee:
Rhodia Inc., Cranbury, NJ (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564292 ; 564296 ; 210651 ;
Abstract
Improved surfactant recovery for recycle and reuse upon ultrafiltration of a surfactant-containing aqueous solution can be obtained using a betaine or amide oxide amphoteric surfactant in the aqueous cleaner/contaminant solution. The surfactant passes through the ultrafiltration membrane with the water in the permeate in very high amounts while the contaminants and other undesirable components are held back in the retentate.
Dahanayake, Manilal. (1999). Recovery and reuse of amphoteric surfactants from aqueous solutions (U.S. Patent No. 5919980). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5919980
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile