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Igarashi Kiyotaka

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electronic watch
    • Patent number RE41686
    • Issue date Sep 14, 2010
    • Citizen Holdings Co., Ltd.
    • Kenji Fujita
    • 368 - Horology: time measuring systems or devices
  • Information Patent Grant

    Electric timepiece
    • Patent number 7,436,737
    • Issue date Oct 14, 2008
    • Citizen Holdings Co., Ltd.
    • Masami Fukuda
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Electronic watch and electronic watch control method
    • Patent number 7,154,816
    • Issue date Dec 26, 2006
    • Citizen Watch Co., Ltd.
    • Kiyotaka Igarashi
    • G04 - HOROLOGY
  • Information Patent Grant

    Electronic clock
    • Patent number 6,819,634
    • Issue date Nov 16, 2004
    • Citizen Watch Co., Ltd.
    • Kiyotaka Igarashi
    • G04 - HOROLOGY
  • Information Patent Grant

    Electronic watch and drive method therefor
    • Patent number 6,483,781
    • Issue date Nov 19, 2002
    • Citizen Watch Co., Ltd.
    • Kiyotaka Igarashi
    • G04 - HOROLOGY
  • Information Patent Grant

    Hand display-type electronic timepiece
    • Patent number 6,072,752
    • Issue date Jun 6, 2000
    • Citizen Watch Co., Ltd.
    • Kiyotaka Igarashi
    • G04 - HOROLOGY
  • Information Patent Grant

    Rechargeable electronic apparatus
    • Patent number 6,060,862
    • Issue date May 9, 2000
    • Citizen Watch Co., Ltd.
    • Masahiro Sase
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Electronic watch provided with an electrical generator
    • Patent number 6,021,097
    • Issue date Feb 1, 2000
    • Citizen Watch Company, Ltd.
    • Fumio Kanno
    • G04 - HOROLOGY
  • Information Patent Grant

    Electronic timepiece with power generating function
    • Patent number 5,943,301
    • Issue date Aug 24, 1999
    • Citizen Watch Co., Ltd.
    • Kiyotaka Igarashi
    • G04 - HOROLOGY
  • Information Patent Grant

    Electronic watch
    • Patent number 5,889,736
    • Issue date Mar 30, 1999
    • Citizen Watch Co., Ltd.
    • Kenji Fujita
    • 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