Patents by Inventor Allen Tze-Chung Chien

Allen Tze-Chung Chien 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).

  • Cellular phone and method for receiving and transmitting signals of different frequency bands
    Patent number: 7383032
    Abstract: A cellular phone and method for receiving and transmitting signals of different frequency bands and wireless standards utilizes an architecture that allows the use of switches that are less expensive and less lossy than switches used in comparable cellular phones. The architecture also allows the use of only narrow-banded antennas, rather than a combination of a narrow-banded antenna and a harmonic antenna. As a result, the performance of the cellular phone can be significantly improved.
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: June 3, 2008
    Assignee: Avago Technologies Wireless IP Pte Ltd
    Inventors: Michael Louis Frank, Allen Tze-Chung Chien