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Kazuhiko Otawa

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  • Osaka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Fuel cell separator
    • Patent number 7,033,692
    • Issue date Apr 25, 2006
    • Nippon Pillar Packing Co., Ltd.
    • Kazuhiko Otawa
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Grant

    Fuel cell separator and production method therefor
    • Patent number 7,029,783
    • Issue date Apr 18, 2006
    • Nippon Pillar Packing Co., Ltd.
    • Kazuhiko Otawa
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Separator for a fuel cell and manufacturing method of the separator
    • Patent number 6,864,008
    • Issue date Mar 8, 2005
    • Nippon Pilllar Packing Co., Ltd.
    • Kazuhiko Otawa
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Grant

    Polishing pad
    • Patent number 6,089,965
    • Issue date Jul 18, 2000
    • Nippon Pillar Packing Co., Ltd.
    • Kazuhiko Otawa
    • B24 - GRINDING POLISHING

Patents Applicationslast 30 patents