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. 12, 1978
Filed:
Mar. 01, 1972
Applicant:
Inventors:
Mitsunori Sugiyama, Minami-ashigara, JP;
Shoji Ishiguro, Minami-ashigara, JP;
Nobuo Sugiyama, Minami-ashigara, JP;
Yoo Iijima, Minami-ashigara, JP;
Eiichi Okutsu, Minami-ashigara, JP;
Haruhiko Iwano, Minami-ashigara, JP;
Katsumi Hosoya, Odawara, JP;
Hikoharu Hara, Odawara, JP;
Assignee:
Fuji Photo Film Co., Ltd., Minami-ashigara, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
96 6 / ; 96 6 / ;
Abstract
High-contrast photographic images are obtained by developing with a developer containing at least one dihydroxybenzene and sulfite ion and then treating with a solution of an oxidizing agent.