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Takashi Osa

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electronic timepiece with solar cell
    • Patent number 7,400,556
    • Issue date Jul 15, 2008
    • Citizen Watch Co., Ltd.
    • Takashi Osa
    • G04 - HOROLOGY
  • Information Patent Grant

    Electronic device
    • Patent number 6,593,901
    • Issue date Jul 15, 2003
    • Citizen Watch Co., Ltd.
    • Isao Kitazawa
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Cardiotachometer
    • Patent number 5,743,269
    • Issue date Apr 28, 1998
    • Citizen Watch Co. Ltd.
    • Tomio Okigami
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Watch with hands for multiple time displays
    • Patent number 5,339,293
    • Issue date Aug 16, 1994
    • Citizen Watch Co., Ltd.
    • Yasuo Kamiyama
    • G04 - HOROLOGY
  • Information Patent Grant

    Analog world watch
    • Patent number 5,237,544
    • Issue date Aug 17, 1993
    • Citizen Watch Co., Ltd.
    • Masahiro Sase
    • G04 - HOROLOGY
  • Information Patent Grant

    Display device
    • Patent number 5,195,062
    • Issue date Mar 16, 1993
    • Citizen Watch Co., Ltd.
    • Sase Masahiro
    • G04 - HOROLOGY

Patents Applicationslast 30 patents