TREA

Toshio Hiruta

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  • Tanashi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electronic watch with an antenna for a receiving device
    • Patent number 5,331,608
    • Issue date Jul 19, 1994
    • Citizen Watch Co., Ltd.
    • Toshio Umemoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Wristwatch with pressure sensor
    • Patent number 4,783,772
    • Issue date Nov 8, 1988
    • Citizen Watch Co., Ltd.
    • Toshio Umemoto
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Electronic timepiece
    • Patent number 4,291,400
    • Issue date Sep 22, 1981
    • Citizen Watch Co. Ltd.
    • Katsuhiko Komiyama
    • G04 - HOROLOGY
  • Information Patent Grant

    Wristwatch with solar cells
    • Patent number 4,261,049
    • Issue date Apr 7, 1981
    • Citizen Watch Co., Ltd.
    • Katsuhiko Komiyama
    • G04 - HOROLOGY