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:
Mar. 05, 1991
Filed:
Jan. 29, 1988
Applicant:
Inventors:
Dodd W Fong, Naperville, IL (US);
Ralph W Kaesler, Barrington, IL (US);
Assignee:
Nalco Chemical Company, Naperville, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
525344 ; 5253294 ;
Abstract
Improved methods are provided for the sulfomethylation of high molecular weight polyacrylamide polymers which reduce or minimize cross linking and result in polymers which have a reduced specific viscosity (RSV) greater than the polyacrylamide polymer used as the starting material polymer in the process.
Fong, Dodd. (1991). Sulfomethylation of high molecular weight polyacrylamide (U.S. Patent No. 4997890). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4997890
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile