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Francois Leon Schelfaut
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St. Niklaas, BE
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last 30 patents
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Patent Grant
Reversal processing of exposed Lippman-emulsions
Patent number
4,148,647
Issue date
Apr 10, 1979
AGFA-GEVAERT N.V.
Francois L. Schelfaut
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Lippmann-emulsions and reversal processing thereof
Patent number
4,108,661
Issue date
Aug 22, 1978
Agfa-Gevaert, N.V.
Willy Joseph Vanassche
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Processing of photographic silver halide materials
Patent number
4,081,280
Issue date
Mar 28, 1978
Agfa-Gevaert N.V.
Hans Josephus Corluy
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Development modifiers for silver halide emulsions
Patent number
3,947,273
Issue date
Mar 30, 1976
AGFA-Gevaert, N.V.
Robert Joseph Pollet
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...