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:
Jun. 13, 1995
Filed:
Jun. 18, 1993
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A water-soluble methine compound represented by the following general formula (I): ##STR1## wherein Z.sub.1 and Z.sub.2, which may be the same or different, each represents a non-metallic atomic group required for forming a 5-membered or 6-membered nitrogen-containing heterocyclic ring; R.sub.1 and R.sub.2, which may be the same or different, each represents an alkyl group; Q.sub.1 and Q.sub.2 each represents an atomic group required, in combination, for forming a 4-thiazolidinone ring, a 5-thiazolidinone ring, a 4-imidazolidinone ring, a 4-oxazolidinone ring, a 5-oxazolidinone ring, a 5-imidazolidinone ring or a 4-dithiolanone ring; L.sub.1, L.sub.2, L.sub.3, L.sub.4 and L.sub.5, which may be the same or different, each represents a methine group; R represents a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group; m represents 1 or 2; i and h each represents 0 or 1; l represents 1 or 2; and j and k each represents 0, 1, 2 or 3. A photographic silver halide emulsion containing said methine compound added in the form of an aqueous solution is also disclosed.