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. 23, 1980
Filed:
Aug. 03, 1978
Yuzo Toda, Minami-ashigara, JP;
Keiichi Adachi, Minami-ashigara, JP;
Shoji Ishiguro, Minami-ashigara, JP;
Yasuhiro Nakayama, Fujinomiya, JP;
Fuji Photo Film Co., Ltd., Minami-ashigara, JP;
Abstract
A method for preventing the degradation of a hydrophilic colloid solution for a silver halide photographic light-sensitive material of which the viscosity has been or is to be increased using an anionic polymer containing an acid group, which comprises incorporating into the hydrophilic colloid solution at least one compound represented by the formula (I): ##STR1## wherein R.sub. represents a hydrogen atom or an alkyl group; and R.sub.2, R.sub.3 and R.sub.4, which may be the same or different, each represents a hydrogen atom, a halogen atom, an alkyl group or an alkoxy group.