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:
Aug. 15, 1978
Filed:
Apr. 26, 1977
Mitsugu Tanaka, Shiba; Keisuke, JP;
Kiyoshin Nakazyo, Shiba; Keisuke, JP;
Atsuaki Arai, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Minami Ashigara, JP;
Abstract
A yellow color forming photographic coupler represented by the following general formula (I) ##STR1## in which X represents an aliphatic group, an aromatic group or a heterocyclic group; Y represents a hydrogen atom or a coupling off group; R.sub.1 and R.sub.2 each represents an aliphatic group, or R.sub.1 and R.sub.2 can combine to form a ring; and R.sub.3 and R.sub.4 each represents a hydrogen atom, an aliphatic group, an aromatic group or a heterocyclic group.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile