TREA

Tokyo Denryoki Kabushiki Kaisha

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Patents Grantslast 30 patents

  • Information Patent Grant

    Protective relaying system
    • Patent number 4,228,476
    • Issue date Oct 14, 1980
    • Tokyo Shibaura Denki Kabushiki Kaisha
    • Yuji Okita
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Distance relaying systems
    • Patent number 4,212,046
    • Issue date Jul 8, 1980
    • Tokyo Shibaura Denki Kabushiki Kaisha
    • Fumio Andow
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER