Patents by Inventor Steven Michael Thornberg

Steven Michael Thornberg 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).

  • Real-time monitoring of volatile organic compounds using chemical ionization mass spectrometry
    Patent number: 5962774
    Abstract: A system for on-line quantitative monitoring of volatile organic compounds (VOCs) includes pressure reduction means for carrying a gaseous sample from a first location to a measuring input location maintained at a low pressure, the system utilizing active feedback to keep both the vapor flow and pressure to a chemical ionization mode mass spectrometer constant. A multiple input manifold for VOC and gas distribution permits a combination of calibration gases or samples to be applied to the spectrometer.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: October 5, 1999
    Assignee: Sandia Corporation
    Inventors: Curtis Dale Mowry, Steven Michael Thornberg