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:
Nov. 23, 1976
Filed:
Jun. 06, 1975
Applicant:
Inventor:
Lawrence James Guilbault, Topsfield, MA (US);
Assignee:
Calgon Corporation, Pittsburgh, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
260875 ; 260 / ; 260 / ; 260885 ; 210 54 ;
Abstract
Block polymers of the A-B-A type wherein the A block is derived from a water-soluble monomer and the B block is derived from N-vinyl pyrrolidone. The polymers are water soluble and are useful as flocculants.
Guilbault, Lawrence. (1976). Water-soluble vinyl-pyrrolidone block copolymers (U.S. Patent No. 3993712). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3993712
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile