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:
Jul. 28, 1981
Filed:
Dec. 04, 1979
Kenichi Kishi, Hino, JP;
Takashi Sasaki, Hino, JP;
Konishiroku Photo Industry Co., Ltd., Tokyo, JP;
Abstract
A photographic material comprising a support and at least one silver halide emulsion layer coated thereon, which material comprises a compound represented by the following general formula [I]: ##STR1## wherein R.sup.1 represents a hydrogen atom or a substituted or unsubstituted aryl group, R.sup.2 and R.sup.3 individually represents a hydrogen atom, an alkyl group, alkenyl group, a substituted or unsubstituted aryl group, or R.sup.2 and R.sup.3 represent nonmetal atoms necessary for forming by their mutual linkage a 5- or 6-membered ring, and R.sup.4 represents a hydrogen atom, an alkyl group, alkenyl group, a substituted or unsubstituted aryl group or a group of the general formula ##STR2## wherein X represents the group --(CH.sub.2).sub.n -- wherein n is an integer from 0 to 4, or an allylene group.