TREA

Kazuhiko Kuramoto

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  • Tokuyama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Polymerizable composition and organic glass
    • Patent number 5,556,931
    • Issue date Sep 17, 1996
    • Tokuyama Corporation
    • Satoshi Imura
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Photochromic composition
    • Patent number 5,462,698
    • Issue date Oct 31, 1995
    • Tokuyama Corporation
    • Takashi Kobayakawa
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Photochromic composition
    • Patent number 5,395,566
    • Issue date Mar 7, 1995
    • Tokuyama Corporation
    • Takashi Kobayakawa
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY