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Masataka Ikenishi

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Magnetic shielding structure of analog electronic timepiece
    • Patent number 4,897,825
    • Issue date Jan 30, 1990
    • Seiko Instruments Inc.
    • Masataka Ikenishi
    • G04 - HOROLOGY
  • Information Patent Grant

    Electronic watch
    • Patent number 4,274,150
    • Issue date Jun 16, 1981
    • Kabushiki Kaisha Daini Seikosha
    • Masataka Ikenishi
    • G04 - HOROLOGY
  • Information Patent Grant

    Electronic watch
    • Patent number 4,241,433
    • Issue date Dec 23, 1980
    • Kabushiki Kaisha Daini Seikosha
    • Makoto Ueda
    • G04 - HOROLOGY
  • Information Patent Grant

    Electronic watch
    • Patent number 4,216,646
    • Issue date Aug 12, 1980
    • Kabushiki Kaisha Daini Seikosha
    • Masataka Ikenishi
    • G04 - HOROLOGY
  • Information Patent Grant

    Calendar mechanism of a portable timepiece
    • Patent number 4,204,395
    • Issue date May 27, 1980
    • Kabushiki Kaisha Daini Seikosha
    • Masataka Ikenishi
    • G04 - HOROLOGY
  • Information Patent Grant

    Train structure of a timepiece
    • Patent number 4,125,994
    • Issue date Nov 21, 1978
    • Kabushiki Kaisha Daini Seikosha
    • Yasuichi Nakagawa
    • G04 - HOROLOGY