TREA

Kwok Y. Chan

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  • Quarry Bay, HK
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Patents Grantslast 30 patents

  • Information Patent Grant

    Zoom lens assembly
    • Patent number 5,268,794
    • Issue date Dec 7, 1993
    • W. Haking Enterprises Limited
    • Kwok Y. Chan
    • G02 - OPTICS
  • Information Patent Grant

    Miniature camera
    • Patent number D309743
    • Issue date Aug 7, 1990
    • W. Haking Enterprises Limited
    • Kwok Y. Chan
    • D16 - Photography and optical equipment
  • Information Patent Grant

    Miniature camera
    • Patent number D308880
    • Issue date Jun 26, 1990
    • W. Haking Enterprises Limited
    • Kwok Y. Chan
    • D16 - Photography and optical equipment
  • Information Patent Grant

    Miniature camera shutter mechanism
    • Patent number 4,746,946
    • Issue date May 24, 1988
    • W. Haking Enterprises Limited
    • Kwok Y. Chan
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Miniature 110 camera
    • Patent number 4,746,945
    • Issue date May 24, 1988
    • W. Haking Enterprises Limited
    • Kwok Y. Chan
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Automatic film-transport mechanism for a disc camera
    • Patent number 4,602,859
    • Issue date Jul 29, 1986
    • W. Haking Enterprises Limited
    • Kwok Y. Chan
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Pocket camera
    • Patent number 4,330,190
    • Issue date May 18, 1982
    • W. Haking Enterprises Limited
    • Kwok Yan Chan
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Retractable camera
    • Patent number 4,299,465
    • Issue date Nov 10, 1981
    • W. Haking Enterprises, Ltd.
    • Kwok Y. Chan
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Camera for underwater and above water use
    • Patent number 4,041,507
    • Issue date Aug 9, 1977
    • W. Haking Industries, Ltd.
    • Kwok Yan Chan
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Retractable camera
    • Patent number 4,032,940
    • Issue date Jun 28, 1977
    • W. Haking Industries, Ltd.
    • Kwok Yan Chan
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Percussive flash unit operating mechanism
    • Patent number 4,014,033
    • Issue date Mar 22, 1977
    • W. Haking Industries, Ltd.
    • Kwok Yan Chan
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY