TREA

Hiroshi Hasegawa

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  • Yokohama, JA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electrical insulating oil
    • Patent number 4,072,620
    • Issue date Feb 7, 1978
    • Nippon Oil Co., Ltd.
    • Midori Masunaga
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Electrical insulating oils
    • Patent number 4,069,166
    • Issue date Jan 17, 1978
    • Nippon Oil Company, Ltd.
    • Midori Masunaga
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Automatic control indication device in an automatic control type el...
    • Patent number 3,999,193
    • Issue date Dec 21, 1976
    • Nippon Kogaku K.K.
    • Hiroshi Hasegawa
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR