Patents by Inventor Tsien Ming Au

Tsien Ming Au 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).

  • RF identification transponder
    Patent number: 5945938
    Abstract: An RF identification transponder comprises a substrate layer, and an array of M*N antenna elements formed on the substrate layer, where M and N are integers. The antenna elements have a common predetermined resonant frequency f.sub.r. The resonant frequency of the transponder's antenna element array allows it to be identified apart from other transponders, each having an antenna element array with a different resonant frequency.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: August 31, 1999
    Assignee: National University of Singapore
    Inventors: Yan Wah Chia, Tsien Ming Au