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:
Sep. 17, 1996
Filed:
Jan. 27, 1995
Koji Wariishi, Kanagawa, JP;
Mario Aoki, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A novel pyrazolonoxonol compound represented by formula (A) and a silver halide photographic material comprising such a pyrazolonoxonol compound: ##STR1## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom, an alkyl group or an aryl group, and the alkyl groups represented by R.sub.1 and R.sub.2 may bond each other to form a saturated 5- or 6-membered ring; R.sub.3 represents a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group, a hydroxyl group, an alkoxy group, a carboxyl group, an ester group, a carbamoyl group, an amino group, an acylamino group, an ureide group, an urethane group or a cyano group; L.sub.1, L.sub.2, L.sub.3, L.sub.4 and L.sub.5 each represents a methine group, and the methine groups which are not adjacent to each other may bond each other to form a 5- or 6-membered ring; M represents a hydrogen atom or a monovalent cation; and m and n each represent an integer 0 or 1.