Patents by Inventor Cheng T. Hsu

Cheng T. Hsu 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).

  • Patent number: D322021
    Type: Grant
    Filed: March 20, 1989
    Date of Patent: December 3, 1991
    Inventor: Cheng T. Hsu