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. 10, 2007
Filed:
Oct. 25, 2004
Applicants:
Atsushi Ito, Osaka, JP;
Naoshi Murata, Osaka, JP;
Yumi Hirose, Ikoma, JP;
Inventors:
Assignee:
Sakura Color Products Corporation, Osaka-shi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09D 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention provides an aqueous ink composition for ball-point pens excellent in both the lubricity for an aqueous ballpoint pen tip and the bleed resistance of writing. The ink composition comprises water and a colorant as the essential components and is characterized by further containing a compound represented by the general formula (1) and at least one water-soluble organic solvent selected from among alcohols having branched hydrophobic groups, glycols, and glycol ethers