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. 14, 1982
Filed:
Jun. 16, 1980
Shinpei Ikenoue, Minami-ashigara, JP;
Hiroyuki Mifune, Minami-ashigara, JP;
Yoshiharu Fuseya, Minami-ashigara, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A silver halide photographic material is described, comprising an emulsion which is chemical-ripened in the presence of a compound having the formula (I) or (II), ##STR1## wherein R.sub.1 is hydrogen, an alkali metal ion, or an ammonium ion; R.sub.2 is an alkyl group, an alkoxy group, an aryloxy group, an acyl group, an amino group, a substituted amino group, a halogen atom, an acyloxy group, an acylamino group, a carbamoyl group, a nitro group, an aryl group, an allyl group, a sulfo group or a carboxy group; Y represents a divalent linking group; and n is 0, 1, or 2; such emulsions show high sensitivity without fog and have good stability.