TREA

Tohru Tamagawa

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Gas laser device
    • Patent number 5,408,490
    • Issue date Apr 18, 1995
    • Kabushiki Kaisha Toshiba
    • Kiyohisa Terai
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Gas laser device
    • Patent number 5,295,149
    • Issue date Mar 15, 1994
    • Kabushiki Kaisha Toshiba
    • Kiyohisa Terai
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Method for processing vacuum switch and vacuum switch processed by...
    • Patent number 4,736,078
    • Issue date Apr 5, 1988
    • Kabushiki Kaisha Toshiba
    • Koichi Yasuoka
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    DC Interrupting apparatus
    • Patent number 4,305,107
    • Issue date Dec 8, 1981
    • Tokyo Shibaura Denki Kabushiki Kaisha
    • Minoru Murano
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Direct current interrupter
    • Patent number 4,262,215
    • Issue date Apr 14, 1981
    • Tokyo Shibaura Denki Kabushiki Kaisha
    • Satoru Yanabu
    • H01 - BASIC ELECTRIC ELEMENTS