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. 14, 2000
Filed:
Sep. 02, 1998
Applicant:
Inventors:
John A Simms, Wilmington, DE (US);
Aleksandr Sorser, West Bloomfield, MI (US);
Assignee:
E. I. du Pont Nemours and Company, Wilmington, DE (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
525176 ; 523522 ; 524504 ; 525186 ; 525187 ; 5253273 ; 525375 ; 525378 ; 525386 ;
Abstract
A polymeric pigment dispersant of a graft polymer having an acrylic polymer backbone and pending from the backbone, polyester side chains, cyclic imide groups and quaternary ammonium groups and the polymer having a calculated number average molecular weight of 8,000-50,000; wherein the graft copolymer is composed of