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:
Mar. 02, 1976
Filed:
Nov. 20, 1972
Applicant:
Inventors:
Erwin Ranz, Leverkusen, DT;
Otto Lapp, Leverkusen, DT;
Erik Moisar, Cologne, DT;
Harald VON Rintelen, Leverkusen, DT;
Assignee:
AGFA-Gevaert, A.G., Bayerwerk, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ; G03C / ;
U.S. Cl.
CPC ...
96 2 / ; 96452 ; 96 64 ; 96 6 / ; 96 63 ; 96 68 ; 96 69 ; 96107 ; 96108 ;
Abstract
Equidensity images can be produced by imagewise exposure and photographic processing of a photographic material containing at least two silver salt emulsions which may be arranged in one layer as a mixture or in two layers, wherein one silver salt emulsion is a fogged direct positive emulsion and the other is a negative emulsion.