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Masahiko Koumura

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  • Konan, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Water heater
    • Patent number 4,627,416
    • Issue date Dec 9, 1986
    • Rinnai Kabushiki Kaisha
    • Hiroshi Ito
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Grant

    Water heater
    • Patent number 4,505,253
    • Issue date Mar 19, 1985
    • Rinnai Kabushiki Kaisha
    • Sueo Mizuno
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Grant

    Door locking apparatus
    • Patent number 4,335,912
    • Issue date Jun 22, 1982
    • Rinnai Kabushiki Kaisha
    • Masahiko Koumura
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Combination microwave and gas oven
    • Patent number 4,278,862
    • Issue date Jul 14, 1981
    • Rinnai Kabushiki Kaisha
    • Sueo Mizuno
    • F24 - HEATING RANGES VENTILATING