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:
Jun. 03, 2008
Filed:
Jul. 19, 2002
Applicants:
Shuuji Ichikawa, Yokohama, JP;
Takayuki Ikai, Yokohama, JP;
Inventors:
Shuuji Ichikawa, Yokohama, JP;
Takayuki Ikai, Yokohama, JP;
Assignee:
Mitsubishi Pencil Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An ink composition comprising at least one dye represented by one of the following chemical structural formulae and an anthraquinone-based pigment as coloring materials, an alcohol or an ether as a solvent, and a resin. In a preferred embodiment, a triarylmethane-based dye is used in combination or polyvinylbutyral is contained as the resin. wherein A is a tertiary or quaternary ammonium ion group.