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:
Jan. 11, 2000
Filed:
Sep. 25, 1997
Applicant:
Inventors:
Mark E Ventura, Freehold, NJ (US);
Manilal S Dahanayake, Princeton Junction, NJ (US);
Assignee:
Rhodia Inc., Cranbury, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210651 ; 210653 ; 134 10 ; 134 13 ;
Abstract
Contaminated aqueous systems can be cleaned using an ultra-filtration system that allows for high recovery yields of the surfactant employed therein for recycle and reuse. The system employs specific nonionic surfactants which remain polar and solvated at the higher operating temperatures of the system. The surfactant/contaminant containing aqueous system is ultra-filtered resulting in the surfactant passing through with the permeate at extremely high yields for recovery and reuse.