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:
Oct. 05, 1999
Filed:
Dec. 18, 1997
Applicant:
Inventors:
Michael L Braden, Sugar Land, TX (US);
Richard E Metzgar, Pensacola, FL (US);
Jitendra T Shah, Naperville, IL (US);
Assignee:
Nalco Chemical Company, Naperville, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C02F / ; B01D / ;
U.S. Cl.
CPC ...
210728 ; 210734 ; 210736 ; 210917 ; 210928 ;
Abstract
Processes for removing color from a paper mill waste effluent and for removing color from a textile plant waste effluent utilizing an amphoteric copolymer/polyamine combination are described. A preferred amphoteric copolymer is poly(dimethylaminoethylacrylate methyl chloride quaternary salt/acrylic acid) and a preferred polyamine is a polymeric reaction product of epichlorohydrin and dimethylamine.
Braden, Michael. (1999). Amphoteric polymer/polyamine combinations for color removal and (U.S. Patent No. 5961838). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5961838
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile