TREA

Sumio Nakagawa

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Patents Grantslast 30 patents

  • Information Patent Grant

    Combustion control circuit
    • Patent number 4,455,656
    • Issue date Jun 19, 1984
    • Hitachi, Ltd.
    • Toshio Tanaka
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Grant

    Combustion control apparatus
    • Patent number 4,445,841
    • Issue date May 1, 1984
    • Hitachi, Ltd.
    • Toshio Tanaka
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Grant

    Combustion control apparatus
    • Patent number 4,389,184
    • Issue date Jun 21, 1983
    • Hitachi, Ltd.
    • Toshio Tanaka
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Grant

    Combustion control apparatus
    • Patent number 4,370,126
    • Issue date Jan 25, 1983
    • Hitaci, Ltd.
    • Motoshi Miyanaka
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Grant

    Check circuit for combustion process control timer
    • Patent number 4,239,478
    • Issue date Dec 16, 1980
    • Hitachi, Ltd.
    • Toshio Tanaka
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Grant

    Combustion control apparatus
    • Patent number 4,192,641
    • Issue date Mar 11, 1980
    • Hitachi, Ltd.
    • Sumio Nakagawa
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Grant

    Combustion control system
    • Patent number 4,145,179
    • Issue date Mar 20, 1979
    • Hitachi, Ltd.
    • Toshio Tanaka
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES