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Sieghart Klotzer
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Cologne, DT
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last 30 patents
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Patent Grant
Direct positive silver halide elements
Patent number
4,059,450
Issue date
Nov 22, 1977
Agfa-Gevaert N.V.
Willy Joseph Vanassche
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Direct positive emulsions containing fogged, monodispersed silver h...
Patent number
4,045,228
Issue date
Aug 30, 1977
Agfa-Gevaert N.V.
Willy Joseph Vanassche
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photographic emulsion containing unfogged, heterodisperse layered s...
Patent number
3,957,488
Issue date
May 18, 1976
AGFA-Gevaert, A.G.
Sieghart Klotzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Direct-positive photographic emulsion containing, unfogged, monodis...
Patent number
3,935,014
Issue date
Jan 27, 1976
Agfa-Gevaert Aktiengesellschaft
Sieghart Klotzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY