Patents by Inventor Ying M. Poon

Ying M. Poon 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).

  • Contact sensitive substrate
    Patent number: 5403648
    Abstract: A contact sensitive substrate for electronic equipment comprising a plurality of touch pads and respective associated leads defining an array of touch positions on a front (in use) face of the substrate.
    Type: Grant
    Filed: April 28, 1993
    Date of Patent: April 4, 1995
    Assignee: Varintelligent (BVI) Limited
    Inventors: Yiu S. Chan, Goon N. Lee, York Liao, Ying M. Poon