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Tokuji Tanaka

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Patents Grantslast 30 patents

  • Information Patent Grant

    Acetylated pyroxylin
    • Patent number 6,646,119
    • Issue date Nov 11, 2003
    • Daicel Chemical Industries, Ltd.
    • Tokuji Tanaka
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Acetylated pyroxylin, and its production process
    • Patent number 6,417,344
    • Issue date Jul 9, 2002
    • Daicel Chemical Industries, Ltd.
    • Tokuji Tanaka
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Method for producing acetylated pyroxylin
    • Patent number 6,417,345
    • Issue date Jul 9, 2002
    • Daicel Chemical Industries, Ltd.
    • Tokuji Tanaka
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...