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Masao Sakai

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Patents Grantslast 30 patents

  • Information Patent Grant

    Magnetron with magnetic yoke having annular projection
    • Patent number 4,482,870
    • Issue date Nov 13, 1984
    • Hitachi, Ltd.
    • Masao Sakai
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Magnetron magnet assembly
    • Patent number 4,175,245
    • Issue date Nov 20, 1979
    • Hitachi, Ltd.
    • Yoshio Ishida
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Magnetrons
    • Patent number 4,163,922
    • Issue date Aug 7, 1979
    • Hitachi, Ltd.
    • Masao Sakai
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Megnetrons getter
    • Patent number 4,132,921
    • Issue date Jan 2, 1979
    • Hitachi, Ltd.
    • Shunichi Hatayama
    • H01 - BASIC ELECTRIC ELEMENTS