Patents by Inventor Su J. Tsai

Su J. Tsai 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).

  • Scraper having a hand grip construction
    Patent number: 5008970
    Abstract: A scraper includes a blade fixed in a front end of a handle. Two covers, each with two retainers and a clamping device are respectively provided on an upper surface and a lower surface of the handle. The retainers and the clamping device of one cover pass through the handle and engage with the respective retainers and the clamping device of another cover so that the two covers are easily clamped together. The two covers are provided to form a smooth outer surface for the handle.
    Type: Grant
    Filed: January 22, 1990
    Date of Patent: April 23, 1991
    Inventor: Su J. Tsai