TREA

Sumio Iwase

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Auxiliary power supply apparatus
    • Patent number 6,057,609
    • Issue date May 2, 2000
    • Sony Corporation
    • Tamiji Nagai
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Telephone message forwarding apparatus
    • Patent number 5,075,894
    • Issue date Dec 24, 1991
    • Sony Company
    • Sumio Iwase
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Automatic telephone answering apparatus and method
    • Patent number 4,873,713
    • Issue date Oct 10, 1989
    • Sony Corporation
    • Kiyoshi Yamanouchi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Cordless telephone
    • Patent number 4,694,485
    • Issue date Sep 15, 1987
    • Sony Corporation
    • Sumio Iwase
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE