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:
May. 09, 1989
Filed:
Oct. 26, 1987
Applicant:
Inventors:
Mikio Ihama, Kanagawa, JP;
Sadanobu Shuto, Kanagawa, JP;
Tadaaki Tani, Kanagawa, JP;
Naoyasu Deguchi, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430596 ; 430569 ; 430570 ;
Abstract
A method for manufacturing a silver halide emulsion comprising the steps of forming silver halide grains in the presence of a hydrophilic colloid, physical ripening, desalting, and chemical ripening, wherein a photographic spectral sensitizing dye is added to the emulsion after adding at least 85% by weight of a soluble silver salt solution but before the desalting step is described.