Patents by Inventor Langju Lu

Langju Lu 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 cavity-based process fluid sensor
    Publication number: 20100259362
    Abstract: A remote system for sensing a process fluid parameter comprises a cavity, a tuner and a signal coupler. The cavity is configured to resonate at a central frequency that shifts in response to the process fluid parameter. The tuner is configured to tune the central frequency. The signal coupler is configured to receive a query signal, and to transmit an echo signal when the query signal matches the shifted central frequency.
    Type: Application
    Filed: April 8, 2009
    Publication date: October 14, 2010
    Applicant: Rosemount Inc.
    Inventors: Mark S. Schumacher, Langju Lu