Patents by Inventor Son Duc Tran

Son Duc Tran 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).

  • Respiratory function monitor
    Patent number: 6203502
    Abstract: A respiratory function monitoring device comprising a flow sensor and a conversion device is herein disclosed. Also disclosed are structures for carrying out an auto-zero calibration, a purging function, and temperature compensation. Methods for implementing the auto-zero calibration, the purge function, and the temperature compensation are also disclosed.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: March 20, 2001
    Assignee: Pryon Corporation
    Inventors: Edwin J. Hilgendorf, Son Duc Tran, Steven P. Pruzina, Mark Storsved