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. 17, 1985
Filed:
Oct. 21, 1983
Applicant:
Inventors:
Assignee:
Konishiroku Photo Industry Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430569 ; 430550 ; 430551 ; 430600 ; 430603 ; 430611 ; 430613 ; 430614 ; 430615 ;
Abstract
A novel silver halide emulsion is disclosed. This silver halide emulsion comprises in combination (a) silver halide made of silver chlorobromide or silver chlorobromoiodide, (b) a hydroxytetrazaindene compound and (c) a nitrogen-containing heterocyclic compound having at least one mercapto group, the grains of said silver halide having such a size distribution that the variation co-efficient is not more than 0.15.