TREA

Sean D. Marsden

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  • St. Helens, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Photochromic compounds
    • Patent number 5,833,885
    • Issue date Nov 10, 1998
    • Pilkington PLC
    • Martin Rickwood
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Photochromic compounds
    • Patent number 5,520,853
    • Issue date May 28, 1996
    • Pilkington plc
    • Martin Rickwood
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Photochromic spiroxazine compounds
    • Patent number 5,446,150
    • Issue date Aug 29, 1995
    • Pilkington PLC
    • Martin Rickwood
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Bridged spiroxazine photochromic compounds
    • Patent number 5,446,149
    • Issue date Aug 29, 1995
    • Pilkington PLC
    • Martin Rickwood
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Photo reactive spiro-benzoxazine compounds
    • Patent number 5,446,151
    • Issue date Aug 29, 1995
    • Pilkington PLC
    • Martin Rickwood
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY