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:
May. 26, 1981
Filed:
Dec. 29, 1972
Atsuaki Arai, Minami-ashigara, JP;
Yasushi Oishi, Minami-ashigara, JP;
Kiyoshi Nakazyo, Minami-ashigara, JP;
Atsushi Sugizaki, Minami-ashigara, JP;
Akio Okumura, Minami-ashigara, JP;
Fuji Photo Film Co., Ltd., Minami-ashigara, JP;
Abstract
The process of forming a dye image by developing an image-exposed silver halide photographic emulsion layer by an aromatic primary amine color developing agent in the presence of the yellow dye forming coupler shown by the general formula ##STR1## wherein R.sup.1 represents an aromatic group, R.sup.2 represents an aromatic group or a heterocyclic group, and Z represents the non-metallic atom or atoms necessary for forming a 4-membered ring, a 5-membered ring or a 6-membered ring together with ##STR2## in the above formula. A photographic element containing such a yellow-forming coupler.