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:
Jan. 13, 1987

Filed:

Jun. 11, 1985
Applicant:
Inventors:

Heinz Meckl, Bergisch Gladbach, DE;

Helmut Kampfer, Cologne, DE;

Helmut Haseler, Leverkusen, DE;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ; G03C / ;
U.S. Cl.
CPC ...
430442 ; 430566 ; 430542 ; 430377 ; 430386 ; 430550 ; 430448 ; 430599 ; 430375 ;
Abstract

Photographic recording materials which contain a developer substance or a precursor thereof produce better results if in addition they contain a sulphite, a disulphite or a compound capable of releasing sulphite in the photographic material.


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