TREA

Hifumi Yanagisawa

Follow

Person

  • Sagamihara, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Vacuum interrupter
    • Patent number 4,471,184
    • Issue date Sep 11, 1984
    • Kabushiki Kaisha Meidensha
    • Takamitsu Sano
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Operating device for effecting opening and closing operation of a v...
    • Patent number 4,465,991
    • Issue date Aug 14, 1984
    • Kabushiki Kaisha Meidensha
    • Shinzo Sakuma
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Vacuum interrupter
    • Patent number 4,450,327
    • Issue date May 22, 1984
    • Kabushiki Kaisha Meidensha
    • Hifumi Yanagisawa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Vacuum power interrupting device
    • Patent number 4,434,331
    • Issue date Feb 28, 1984
    • Kabushiki Kaisha Meidensha
    • Shinzo Sakuma
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Vacuum power interrupting device
    • Patent number 4,429,197
    • Issue date Jan 31, 1984
    • Kabushiki Kaisha Meidensha
    • Shinzo Sakuma
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Vacuum circuit breaker
    • Patent number 4,421,961
    • Issue date Dec 20, 1983
    • Kabushiki Kaisha Meidensha
    • Shinzo Sakuma
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Vacuum interrupter
    • Patent number 4,417,110
    • Issue date Nov 22, 1983
    • Kabushiki Kaisha Meidensha
    • Hifumi Yanagisawa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Vacuum circuit interrupter electrodes
    • Patent number 4,293,748
    • Issue date Oct 6, 1981
    • Kabushiki Kaisha Meidensha
    • Shinzo Sakuma
    • H01 - BASIC ELECTRIC ELEMENTS