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. 11, 2003
Filed:
Oct. 26, 2001
Applicant:
Inventors:
Akinori Fujita, Shizuoka-ken, JP;
Tetsunori Matsushita, Shizuoka-ken, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41M 5/30 ;
U.S. Cl.
CPC ...
B41M 5/30 ;
Abstract
A process for an azo coupling reaction is provided that has a large coupling reaction rate and an excellent coloring density and exerts high coupling activity using a stable coupler, and a recording material containing the coupler is provided. The process for an azo coupling reaction comprises carrying out a coupling reaction of a diazonium salt and a coupler to make the diazonium salt form color, and the coupler has certain specified structures.