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. 05, 1991
Filed:
Jun. 20, 1989
Applicant:
Inventors:
Toshifumi Iijima, Kokubunji, JP;
Kenji Kumashiro, Hachioji, JP;
Syoji Matsuzaka, Hachioji, JP;
Hiroshi Kashiwagi, Hino, JP;
Assignee:
Konishiroku Photo Industry Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
430558 ; 430567 ;
Abstract
A silver halide photographic light-sensitive materially having at least one silver halide emulsion layer comprising a magenta coupler represented by formula I and negative type silver halide grains having a core-shell structure which consists of:
Iijima, Toshifumi. (1991). Silver halide photographic light-sensitive material (U.S. Patent No. 4990437). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4990437
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile