TREA

Hisato Hiraishi

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electronic watch
    • Patent number 6,061,304
    • Issue date May 9, 2000
    • Citizen Watch Co., Ltd.
    • Yoichi Nagata
    • G04 - HOROLOGY
  • Information Patent Grant

    Dial plate for solar battery powered watch
    • Patent number 5,912,064
    • Issue date Jun 15, 1999
    • Citizen Watch Co., Ltd.
    • Akira Azuma
    • G04 - HOROLOGY
  • Information Patent Grant

    Solar battery powered watch
    • Patent number 5,761,158
    • Issue date Jun 2, 1998
    • Citizen Watch Co., Ltd.
    • Akira Azuma
    • G04 - HOROLOGY