TREA

Osamu Kamishima

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  • Toyama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Keyboard switch
    • Patent number 6,529,370
    • Issue date Mar 4, 2003
    • SMK Corporation
    • Osamu Kamishima
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Keyboard switch
    • Patent number 6,297,461
    • Issue date Oct 2, 2001
    • SMK Corporation
    • Osamu Kamishima
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Membrane switch
    • Patent number 6,144,003
    • Issue date Nov 7, 2000
    • SMK Corporation
    • Osamu Kamishima
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Keyboard switch for notebook type computer or the like
    • Patent number 5,894,117
    • Issue date Apr 13, 1999
    • SMK Co., Ltd.
    • Osamu Kamishima
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Key switch with multiple contact points
    • Patent number 4,866,228
    • Issue date Sep 12, 1989
    • SMK Co., Ltd.
    • Osamu Kamishima
    • H01 - BASIC ELECTRIC ELEMENTS