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Masayasu Kamada

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  • Kusatsu, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Photochromic materials
    • Patent number 5,208,132
    • Issue date May 4, 1993
    • Matsui Shikiso Chemical Co., Ltd.
    • Masayasu Kamada
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Process for producing linear material
    • Patent number 4,961,972
    • Issue date Oct 9, 1990
    • Matsui Shikiso Chemical Co., Ltd.
    • Goro Shimizu
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Thermochromic color masterbatch
    • Patent number 4,957,949
    • Issue date Sep 18, 1990
    • Matsui Shikiso Chemical Co., Ltd.
    • Masayasu Kamada
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Thermochromic particle containing linear material
    • Patent number 4,851,282
    • Issue date Jul 25, 1989
    • Matsui Shikiso Chemical Co., Ltd.
    • Goro Shimizu
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL