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:
Jun. 24, 1997
Filed:
Oct. 24, 1995
Applicant:
Inventors:
Nobuyuki Haraguchi, Kanagawa, JP;
Hideo Ikeda, Kanagawa, JP;
Hiroyuki Mifune, Kanagawa, JP;
Tetsuro Kojima, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
430569 ; 430603 ;
Abstract
A method for producing a silver halide emulsion, said method comprising: adding silver nitrate to a halogen compound to form an emulsion grain; and doping a non-labile selenium compound in an amount, in terms of selenium added, of from 1.0.times.10.sup.-8 to 1.0.times.10.sup.-6 mol per a unit surface area of 1 m.sup.2 of said emulsion grain, at the time when from 10 to 49% of the total silver amount used for the formation of said emulsion grain is added.