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:
Jan. 04, 2000
Filed:
Apr. 14, 1994
Applicant:
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524377 ; 524376 ; 524270 ; 524379 ; 524389 ; 524430 ; 524497 ; 524556 ; 524612 ;
Abstract
A water-based ink containing a pigment, a dispersant for dispersing the pigment, a water-soluble organic solvent, and water. The dispersant used is at least one compound selected from (a) a copolymer having a hydrophilic part and a hydrophobic part, the hydrophilic part having at least one monomer containing a long-chain nonionic group selected from the following formulae (I) to (III), and .alpha., .beta.-ethylenic unsaturated carboxylic acid,