TREA

Masataka Matsumoto

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  • Tokorozawa, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Watch case and band attachment structure
    • Patent number 4,785,982
    • Issue date Nov 22, 1988
    • Citizen Watch Co., Ltd.
    • Michihiro Iwamura
    • A44 - HABERDASHERY JEWELLERY
  • Information Patent Grant

    Watch case structure
    • Patent number 4,487,513
    • Issue date Dec 11, 1984
    • Citizen Watch Co., Ltd.
    • Masataka Matsumoto
    • G04 - HOROLOGY
  • Information Patent Grant

    Water-resisting structure for a watch
    • Patent number 4,479,724
    • Issue date Oct 30, 1984
    • Citizen Watch Co., Ltd.
    • Masataka Matsumoto
    • G04 - HOROLOGY
  • Information Patent Grant

    Watch case structure
    • Patent number 4,456,388
    • Issue date Jun 26, 1984
    • Citizen Watch Company Limited
    • Masataka Matsumoto
    • G04 - HOROLOGY
  • Information Patent Grant

    Electronic watch multi-curcuit pushbutton switch
    • Patent number 4,430,532
    • Issue date Feb 7, 1984
    • Citizen Watch Co., Ltd.
    • Masataka Matsumoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Timepiece push-button structure
    • Patent number 4,397,568
    • Issue date Aug 9, 1983
    • Citizen Watch Company Limited
    • Masahiko Waki
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Glass mounting structure for watches
    • Patent number 4,391,534
    • Issue date Jul 5, 1983
    • Citizen Watch Co., Ltd.
    • Osamu Matsumura
    • G04 - HOROLOGY
  • Information Patent Grant

    Electrical switch
    • Patent number 4,368,369
    • Issue date Jan 11, 1983
    • Citizen Watch Co., Ltd.
    • Masataka Matsumoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Solar battery powered timepiece
    • Patent number 4,234,947
    • Issue date Nov 18, 1980
    • Citizen Watch Co., Ltd.
    • Masataka Matsumoto
    • G04 - HOROLOGY