Patents by Inventor Kwok Chun Wai

Kwok Chun Wai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • DC-permanent-magnet motor
    Patent number: D561096
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: February 5, 2008
    Assignee: Electrical Core & Motor Mfg. Ltd.
    Inventor: Kwok Chun Wai