Patents by Inventor Steven Vardiman

Steven Vardiman 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).

  • Apparatus for transporting emissions from a stack
    Patent number: 6021678
    Abstract: The apparatus and method of the present invention extract samples of emissions within a stack or duct through the use of a probe. The sample is transported from the probe through a transport device into a mass-monitoring device in which the amount of particulate matter contained in the sample of the emissions is continuously analyzed. The apparatus of the present invention includes a transport device which has a porous inner tube completely sealed inside a solid outer tube. The outer tube of the transport device is supplied with gas through a transpiration port in the outer tube. The gas permeates from the outer tube through the porous inner tube in order to reduce deposition by keeping the particulate matter suspended within the porous inner tube.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: February 8, 2000
    Assignees: Kennecott Utah Copper Corporation, The Texas A&M University System
    Inventors: Steven Vardiman, Andrew R. McFarland