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. 26, 1999
Filed:
Jun. 18, 1998
Applicant:
Inventors:
Nicole Howald, Jona, CH;
Peter Drescher, Tann/ZH, CH;
Assignee:
Pelikan Produktions AG, Egg/ZH, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ; C08F / ; C08F / ; C09D / ;
U.S. Cl.
CPC ...
523160 ; 106 316 ; 106 3165 ; 106 3178 ; 526264 ; 5263482 ; 5263483 ; 526 384 ; 5263485 ;
Abstract
Described is an ink for use in ink jet printers, comprising (a) a solvent, which consists at least of approximately 80% of a homopolar, non-watery solvent, (b) a pigment dispersed in the solvent and (c) a copolymer of vinyl-pyrrolidone with one or several long-chain .alpha.-olefins with at least 6 carbon atoms, specifically with 6 to 24 carbon atoms. Properties of the ink are as follows: reduced color bleeding, reduced penetration of coloring agent into the surface of the paper, improved optical density and improved storage stability.