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. 21, 1984
Filed:
May. 28, 1982
Konishiroku Photo Industry Co., Ltd., Tokyo, JP;
Abstract
The invention relates to silver halide photographic materials comprising a support and a light sensitive silver halide emulsion layer containing as a cyan-dye-forming coupler a compound of the formula ##STR1## wherein R.sub.1 is a halogen atom, an alkyl, alkoxy or acylamino group; R.sub.2 and R.sub.3 are individually a hydrogen atom, an alkyl or aryl group and R.sub.2 and R.sub.3 may form a heterocyclic group by the condensation thereof; n is an integer of 0-3; R.sub.4 is an alkyl, aryl, acyl or heterocyclic group; R.sub.5 is an alkyl, aryl, alkoxy, amino, acylamino, sulfonamide, carboxy, alkoxycarbonyl, carbamoyl, cyano or halogenated alkyl group; and R.sub.6 is a hydrogen atom or an alkyl, alkoxy, carboxy, carbamoyl, hydroxy, acyloxy, nitro, amino, azo, acylamino, sulfonamide or acyl group.