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.

Date of Patent:
Sep. 07, 1982

Filed:

Jul. 23, 1981
Applicant:
Inventors:

Rainer Scheerer, Cologne, DE;

Erwin Ranz, Leverkusen, DE;

Joachim W Lohmann, Odenthal, DE;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430382 ; 430505 ; 430506 ; 430509 ; 430544 ; 430549 ;
Abstract

A photographic recording material having at least 2 panchromatically sensitized silver-halide emulsion layers differing in speed, a DIR-compound and at least 2 yellow couplers of differing coupling velocity provides an improved graininess.


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