Thomas D. G. Hellings

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Harlow, GB

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Patents Grantslast 30 patents

Information Patent Grant
Infra-red sensitizing dyes for silver halide
- Patent number 5,041,550
- Issue date Aug 20, 1991
- Minnesota Mining and Manufacturing Company
- Bernard A. Lea
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Infra-red sensitising dyes for silver halide
- Patent number 4,959,294
- Issue date Sep 25, 1990
- Minnesota Mining and Manufacturing Company
- Bernard A. Lea
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photographic materials and color proofing system
- Patent number 4,818,663
- Issue date Apr 4, 1989
- Minnesota Mining and Manufacturing Company
- Stephen R. Powers
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY