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. 13, 1982
Filed:
Jan. 08, 1981
Applicant:
Inventors:
Leo D Corben, Swampscott, MA (US);
Martin L Falxa, Cambridge, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430567 ; 430569 ;
Abstract
Monodisperse, negative working photosensitive silver halide emulsions comprising grains having a uniform habit and relatively high degree of crystal disorder are prepared by precipitating silver halide in the presence of a seed emulsion which is predominantly silver chloride under conditions whereby substantially none of the silver chloride of said seed emulsion is redissolved and substantially no additional grains are formed.