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:
Jan. 20, 1981
Filed:
Apr. 03, 1979
Yoshiharu Fuseya, Minami-ashigara, JP;
Yukio Karino, Minami-ashigara, JP;
Yoshio Sakakibara, Minami-ashigara, JP;
Katsusuke Endo, Minami-ashigara, JP;
Fuji Photo Film Co., Ltd., Minami-ashigara, JP;
Abstract
A photographic element having on a support at least one silver halide emulsion layer having associated therewith a development inhibitor precursor represented by the formula (I) ##STR1## wherein A is a phenyl group, a substituted phenyl group or a 5- or 6-membered nitrogen-containing heterocyclic ring; said A splitting together with the sulfur atom in the above molecule from the residue of the molecule to provide a silver halide development inhibitor; R.sup.1 is an alkyl group having 1 to 4 carbon atoms; and R.sup.2 is a cyano group, a carbamoyl group or the group represented by the formula ##STR2## wherein R.sup.3 is an aryl group.