TREA

Ryoko Sakiyama

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  • Abiko, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Absorption refrigerator and the method of producing the same
    • Patent number 6,247,331
    • Issue date Jun 19, 2001
    • Hitachi, Ltd.
    • Akira Nishiguchi
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    Absorption refrigerating machine
    • Patent number 6,233,968
    • Issue date May 22, 2001
    • Hitachi, Ltd.
    • Akira Nishiguchi
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    Absorption refrigerating machine
    • Patent number 6,122,930
    • Issue date Sep 26, 2000
    • Hitachi, Ltd.
    • Akira Nishiguchi
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...