TREA

Ikuo Utagawa

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  • Miyagi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Pressure-sensitive sheet material
    • Patent number 4,623,766
    • Issue date Nov 18, 1986
    • Alps Electric Co., Ltd.
    • Ikuo Utagawa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Input device
    • Patent number 4,529,959
    • Issue date Jul 16, 1985
    • Alps Electric Co., Ltd.
    • Kazuhiko Ito
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Input device
    • Patent number 4,504,700
    • Issue date Mar 12, 1985
    • Alps Electric Co., Ltd.
    • Yoshizo Kubo
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Input device
    • Patent number 4,503,286
    • Issue date Mar 5, 1985
    • Alps Electric Co., Ltd.
    • Yoshizo Kubo
    • G06 - COMPUTING CALCULATING COUNTING