Patents by Inventor Dennis Yip Kai-Wing

Dennis Yip Kai-Wing 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).

  • Dispensing hairbrush handle
    Patent number: D318180
    Type: Grant
    Filed: June 21, 1988
    Date of Patent: July 16, 1991
    Assignee: National Brushes & Plastic Manufactury Ltd.
    Inventor: Dennis Yip Kai-Wing