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. 16, 1991
Filed:
Mar. 10, 1989
Applicant:
Inventors:
Noritaka Nakayama, Tokyo, JP;
Satoshi Kawakatsu, Tokyo, JP;
Katsunori Katoh, Tokyo, JP;
Kaoru Shinozaki, Tokyo, JP;
Assignee:
Konishiroku Photo Industry Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430505 ; 430387 ; 430558 ;
Abstract
A silver halide photo-sensitive material having at least one silver halide emulsion layer on a support, characterized by that said silver halide emulsion layer contains at least one magenta-forming coupler of 1H-pyrazolo[ 3,2-c]-s-triazole type which is substituted by a tertiary alkyl group at the 3-position and, by another releasable group than a hydrogen atom at the 7-position.