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:
Jul. 15, 1997
Filed:
Dec. 30, 1992
Applicant:
Inventors:
Sheau-Hwa Ma, Chadds Ford, PA (US);
Walter Raymond Hertler, Kennett Square, PA (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C / ;
U.S. Cl.
CPC ...
523160 ; 106 3127 ; 106 316 ; 523161 ; 524495 ; 524496 ; 524514 ; 524556 ; 524599 ; 524606 ;
Abstract
Aqueous ink jet ink compositions comprising an aqueous carrier medium, a colorant, such as a dye or a pigment, and a polyampholyte containing at least one carboxylic acid group and at least one amine group have improved dispersion stability and flexibility in manufacturing.