Patents by Inventor Michael H. Sonricker

Michael H. Sonricker 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).

  • Calibration for ultra high purity gas analysis
    Patent number: 5214952
    Abstract: A calibration device utilizing a series of highly accurate mass flow controllers is provided for rapidly delivering ultra high purity calibration gas mixtures, and sample gas, to a gas analyzer at elevated temperature conditions. Steady flow rates are desirably provided to the highly sensitive analyzer. Valves exterior (20-25) and interior (3-5) to the heated compartment (9), heated by temperature controlled heater strips (9a), control the mixing of the reference gases with the sample gas and/or the flow of sample or calibration gas to the analyzer (16). The interior valves are diaphragm valves.
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: June 1, 1993
    Assignee: Praxair Technology, Inc.
    Inventors: Gregory H. Leggett, Michael H. Sonricker