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Akira Kitada

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  • Shiga, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Process for preparing high-purity vinylpyrrolidone polymer
    • Patent number 6,486,281
    • Issue date Nov 26, 2002
    • Dai-Ichi Kogyo Seiyaku Co., Ltd.
    • Akira Kitada
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Process for preparing vinylpyrrolidone polymer
    • Patent number 6,465,592
    • Issue date Oct 15, 2002
    • Dai-Ichi Kogyo Seiyaku Co., Ltd.
    • Akira Kitada
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Modified polyvinyl alcohol
    • Patent number 5,783,628
    • Issue date Jul 21, 1998
    • Dai-Ichi Kogyo Seiyaku Co., Ltd.
    • Akira Yada
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents