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:
Apr. 09, 1991
Filed:
Nov. 23, 1988
Applicant:
Inventors:
Masao Sasaki, Hadano, JP;
Toyoki Nishijima, Odawara, JP;
Shun Takada, Odawara, JP;
Kaoru Onodera, Sagamihara, JP;
Assignee:
Konishiroku Photo Industry Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430546 ; 430551 ; 430558 ;
Abstract
A silver halide photographic material comprising a silver halide emulsion layer containing (1) a pyrazoloazole magenta coupler, (2) an anti-color-fading agent having an oxidation potential (Eox) of 0.95(V)<Eox<1.50(V) and (3) a hydroquinone derivative.