Patents by Inventor Tsung-Tsong Wu

Tsung-Tsong Wu 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).

  • Method for determining properties of a film, and apparatus for realizing the method
    Patent number: 7350416
    Abstract: A method for determining properties or a thin film includes the steps of: providing a piezoelectric substrate; providing a slanted finger interdigital transducer unit that includes a transmitter port and a receiver port on the piezoelectric substrate; forming the thin film on the piezoelectric substrate between the transmitter port and the receiver port; applying an input signal to the transmitter port; and measuring a phase difference, which corresponds to the input signal, from the receiver port. Accordingly, properties of the thin film are determined based on the measured phase difference. An apparatus for realizing the method is also disclosed.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: April 1, 2008
    Inventors: Yung-Yu Chen, Tsung-Tsong Wu, Guo-Tsai Huang, Pei-Zen Chang
  • Method for determining properties of a film, and apparatus for realizing the method
    Publication number: 20060172445
    Abstract: A method for determining properties or a thin film includes the steps of: providing a piezoelectric substrate; providing a slanted finger interdigital transducer unit that includes a transmitter port and a receiver port on the piezoelectric substrate; forming the thin film on the piezoelectric substrate between the transmitter port and the receiver port; applying an input signal to the transmitter port; and measuring a phase difference, which corresponds to the input signal, from the receiver port. Accordingly, properties of the thin film are determined based on the measured phase difference. An apparatus for realizing the method is also disclosed.
    Type: Application
    Filed: July 29, 2005
    Publication date: August 3, 2006
    Inventors: Yung-Yu Chen, Tsung-Tsong Wu, Guo-Tsai Huang, Pei-Zen Chang