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Yoshifumi Ishikawa

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  • Kanagawa, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Signal recording system using memory for audio signal
    • Patent number 6,091,885
    • Issue date Jul 18, 2000
    • Canon Kabushiki Kaisha
    • Koji Takahashi
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Signal recording system
    • Patent number 5,784,521
    • Issue date Jul 21, 1998
    • Canon Kabushiki Kaisha
    • Yoshihiro Nakatani
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Camera
    • Patent number D392988
    • Issue date Mar 31, 1998
    • Canon Kabushiki Kaisha
    • Yoshifumi Ishikawa
    • D16 - Photography and optical equipment
  • Information Patent Grant

    Camera
    • Patent number D369372
    • Issue date Apr 30, 1996
    • Canon Kabushiki Kaisha
    • Yoshifumi Ishikawa
    • D16 - Photography and optical equipment
  • Information Patent Grant

    Signal recording system using sound memory
    • Patent number 5,510,901
    • Issue date Apr 23, 1996
    • Canon Kabushiki Kaisha
    • Koji Takahashi
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Video camera with video tape recorder
    • Patent number D345172
    • Issue date Mar 15, 1994
    • Canon Kabushiki Kaisha
    • Yoshifumi Ishikawa
    • D16 - Photography and optical equipment
  • Information Patent Grant

    Video camera with video tape recorder
    • Patent number D342084
    • Issue date Dec 7, 1993
    • Canon Kabushiki Kaisha
    • Yoshifumi Ishikawa
    • D16 - Photography and optical equipment
  • Information Patent Grant

    Video system having image combining function
    • Patent number 5,175,624
    • Issue date Dec 29, 1992
    • Canon Kabushiki Kaisha
    • Teruo Hieda
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Combined video camera and video tape recorder
    • Patent number D331936
    • Issue date Dec 22, 1992
    • Canon Kabushiki Kaisha
    • Yoshifumi Ishikawa
    • D16 - Photography and optical equipment