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Bernard A. Lea

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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

    Silver halide photographic materials
    • Patent number 4,857,450
    • Issue date Aug 15, 1989
    • Minnesota Mining and Manufacturing Company
    • Ronald W. Burrows
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Sensitizers for photothermographic media
    • Patent number 4,835,096
    • Issue date May 30, 1989
    • Minnesota Mining and Manufacturing Company
    • Bernard A. Lea
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Heat bleachable dye systems
    • Patent number 4,594,312
    • Issue date Jun 10, 1986
    • Minnesota Mining and Manufacturing Company
    • Gebran J. Sabongi
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Photographic elements incorporating antihalation and/or acutance dyes
    • Patent number 4,581,325
    • Issue date Apr 8, 1986
    • Minnesota Mining and Manufacturing Company
    • Jonathan P. Kitchin
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Thermolabile acutance dyes for dry silver
    • Patent number 4,283,487
    • Issue date Aug 11, 1981
    • Minnesota Mining and Manufacturing Company
    • Bernard A. Lea
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Photothermographic emulsions containing magenta acutance dyes
    • Patent number 4,153,463
    • Issue date May 8, 1979
    • Minnesota Mining and Manufacturing Company
    • Bernard A. Lea
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY