TREA

Yoshio Ogawa

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  • Yokohama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Color video signal detector and color video signal detecting method
    • Patent number 5,532,756
    • Issue date Jul 2, 1996
    • Sony Corporation
    • Katuhiko Nishikawa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Portable electric device with sliding switch cover
    • Patent number 5,249,102
    • Issue date Sep 28, 1993
    • Sony Corporation
    • Yoshio Ogawa
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Tape player
    • Patent number D336298
    • Issue date Jun 8, 1993
    • Sony Corporation
    • Yoshio Ogawa
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Magnetic audio tape cassette
    • Patent number D336085
    • Issue date Jun 1, 1993
    • Sony Corporation
    • Yoshio Ogawa
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Magnetic audio tape cassette
    • Patent number D336086
    • Issue date Jun 1, 1993
    • Sony Corporation
    • Yoshio Ogawa
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Dictating machine
    • Patent number D330025
    • Issue date Oct 6, 1992
    • Sony Corporation
    • Yoshio Ogawa
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Headphone
    • Patent number 4,829,571
    • Issue date May 9, 1989
    • Sony Corporation
    • Tsutomu Kakiuchi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Typewriter
    • Patent number D270168
    • Issue date Aug 16, 1983
    • Sony Corporation
    • Yoshio Ogawa
    • D18 - Printing and office machinery
  • Information Patent Grant

    Television receiver
    • Patent number 4,167,757
    • Issue date Sep 11, 1979
    • Sony Corporation
    • Kenichiro Kono
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE