Patents by Inventor Penelope C. Yao

Penelope C. Yao 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).

  • Keyboard
    Patent number: D357476
    Type: Grant
    Filed: June 25, 1993
    Date of Patent: April 18, 1995
    Assignee: Ziba Design, Inc.
    Inventors: Mike M. Paull, Steven T. Kaneko, Thomas E. Davies, Jr., Jan Hippen, Penelope C. Yao