Patents by Inventor Au Yuk San

Au Yuk San 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).

  • Umbrella handle with light
    Patent number: D431900
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: October 17, 2000
    Inventor: Au Yuk San
  • Umbrella handle
    Patent number: D433793
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: November 21, 2000
    Inventor: Au Yuk San
  • Torch umbrella handle
    Patent number: D433794
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: November 21, 2000
    Inventor: Au Yuk San