Patents by Inventor Tiezhi Zhang

Tiezhi Zhang 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).

  • Combined laser spirometer motion tracking system for radiotherapy
    Publication number: 20040254492
    Abstract: An improved non-invasive respiration monitor combines signals from a spirometer and laser chest displacement sensor to reduce signal error. The improved respirations signal can be used for position correction in radiation therapy and imaging applications and can be displayed to a user in breath control techniques.
    Type: Application
    Filed: November 18, 2003
    Publication date: December 16, 2004
    Inventors: Tiezhi Zhang, Harald Keller, Bhudatt R. Paliwal