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:
Jul. 24, 1979
Filed:
Aug. 08, 1977
Isao Shimamura, Minami-ashigara, JP;
Yasuharu Nakamura, Minami-ashigara, JP;
Fuji Photo Film Co., Ltd., Minami-ashigara, JP;
Abstract
A reversal color photographic process which comprises subjecting an exposed silver halide color photographic light-sensitive material to a first black-and-white development and then (a) color developing the light-sensitive material with a color developing solution containing a water-soluble stannous salt and a phosphonocarboxylic acid compound or (b) processing the light-sensitive material with a fogging bath containing a water-soluble stannous salt and a phosphonocarboxylic acid compound and then color developing the light-sensitive material, the phosphonocarboxylic acid compound being represented by the general formula (I): ##STR1## wherein R.sub.1 is --COOM' or --PO(OM).sub.2 ;