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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.:

US 4307183 B1

PDFFull Text
Date of Patent:
Dec. 22, 1981

Filed:

Oct. 14, 1980

Silver halide photographic emulsions including dye sensitizers and

Applicant:
Inventor:

Gerolamo Delfino, Ferrania/Savona, IT;

Assignee:

Minnesota Mining and Manufacturing Company, St. Paul, MN (US);

Attorneys:

Alexander; Cruzan

Sell; Donald M.

Litman; Mark A.

Primary Examiner:

J Travis Brown

Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
430495 ; 430523 ; 430572 ; 430576 ; 430627 ; 430961 ; 430966 ;
Abstract

Object of the invention are photographic emulsions including silver halide grains dispersed in gelatin and at least a methine dye spectral sensitizer associated with said grains, including in association therewith a supersensitizing or stabilizing amount of a polymeric compound having an aminoallylidenmalononitrile moiety. The invention further relates to photographic elements, in particular radiographic elements, comprising said emulsions. According to the invention, said polymeric compound is obtained upon copolymerization of an allyl monomer, comprising said aminoallylidenmalononitrile moiety, with an ethylenically unsaturated monomer.

Find Patent Forward Citations

Delfino, Gerolamo. (1981). Silver halide photographic emulsions including dye sensitizers and (U.S. Patent No. 4307183). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4307183

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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