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:
Feb. 22, 2005
Filed:
Oct. 24, 2002
Applicants:
Tetsuya Aoyama, Nagano, JP;
Kazuhiko Kitamura, Nagano, JP;
Hiroshi Fukumoto, Nagano, JP;
Yoshihiro Sawatari, Osaka, JP;
Shuji Sugawara, Osaka, JP;
Makiko Matsui, Osaka, JP;
Inventors:
Tetsuya Aoyama, Nagano, JP;
Kazuhiko Kitamura, Nagano, JP;
Hiroshi Fukumoto, Nagano, JP;
Yoshihiro Sawatari, Osaka, JP;
Shuji Sugawara, Osaka, JP;
Makiko Matsui, Osaka, JP;
Assignees:
Seiko Epson Corporation, Tokyo, JP;
Orient Chemical Industries, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D011/02 ; B41J002/01 ;
U.S. Cl.
CPC ...
Abstract
To provide a black aqueous ink composition for excellent light and gas fastness, an ink set including the ink composition, and an ink jet recording process using the same, the black aqueous ink composition contains at least a trisazo dye represented by Chemical Formula 31.