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:
Nov. 20, 2007
Filed:
May. 20, 2004
Applicants:
Hiroyuki Matsumoto, Saitama, JP;
Katsunori Fujii, Kawaguchi, JP;
Yasuo Shirasaki, Saitama, JP;
Takafumi Fujii, Saitama, JP;
Yasuo Murakami, Kawaguchi, JP;
Inventors:
Hiroyuki Matsumoto, Saitama, JP;
Katsunori Fujii, Kawaguchi, JP;
Yasuo Shirasaki, Saitama, JP;
Takafumi Fujii, Saitama, JP;
Yasuo Murakami, Kawaguchi, JP;
Assignee:
Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 11/00 (2006.01); C09D 11/02 (2006.01); C07D 221/18 (2006.01); B41J 2/01 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides magenta dyestuff represented by the formula (1): (wherein symbols are as defined in the present description), with hue and vividness suitable to ink-jet recording, records excellent in fastness to light, gas, water and so on and a superior ink composition using said dyestuff.