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Walter Beltramini
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Albisola Superiore, IT
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last 30 patents
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Patent Grant
Silver halide multilayer color photographic element comprising a di...
Patent number
5,212,056
Issue date
May 18, 1993
Minnesota Mining and Manufacturing Company
Walter Beltramini
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Silver halide emulsion containing a 2-unsubstituted N-alkenyl-thiaz...
Patent number
4,780,400
Issue date
Oct 25, 1988
Minnesota Mining and Manufacturing Company
Walter Beltramini
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Silver halide multilayer color photographic material containing cou...
Patent number
4,777,122
Issue date
Oct 11, 1988
Minnesota Mining and Manufacturing Company
Walter Beltramini
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY