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. 17, 1979
Filed:
Jun. 06, 1977
Applicant:
Inventors:
John M Winslow, South St. Paul, MN (US);
Ivan R Maw, Woodbury, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
961141 ; 96 9 / ; 961146 ;
Abstract
A process of forming photothermographic emulsions which comprises adding silver halide with agitation to a dispersion of melted long chain fatty acid in water in the absence of alkali and ammonia salts of said acid, then converting the acid to an ammonia salt or alkali metal salt, then cooling the dispersion, and thereafter converting the alkali metal salt or ammonia salt to a silver salt of the acid.