TREA

Hirokazu Murayama

Follow

Person

  • Kumagaya, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Rare earth metal-cobalt permanent magnet alloy
    • Patent number 4,284,440
    • Issue date Aug 18, 1981
    • Hitachi Metals, Ltd.
    • Masaaki Tokunaga
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Permanent magnet alloy
    • Patent number 4,172,717
    • Issue date Oct 30, 1979
    • Hitachi Metals, Ltd.
    • Masaaki Tokunaga
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...