TREA

Yasuhiro Tsukamoto

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  • Hitachi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Charging circuit
    • Patent number 5,006,780
    • Issue date Apr 9, 1991
    • Hitachi, Ltd.
    • Kozo Tamura
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power supply apparatus for charging-type device
    • Patent number 4,994,726
    • Issue date Feb 19, 1991
    • Hitachi Ltd.
    • Kozo Tamura
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE