Patents by Inventor John Troost

John Troost 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).

  • Patent number: 5611844
    Abstract: A method for sampling and analyzing landfill gas, in which the landfill gas, which consists primarily of methane and contains volatile organic components, is passed through a quantity of liquid tetraglyme to cause the volatile organic components to be absorbed in the tetraglyme. The tetraglyme containing the absorbed volatile organic components, is then disposed in a sealed container with zero headspace and transported to a laboratory testing facility. At the testing facility, at least a portion of the tetraglyme is withdrawn from the container, dispersed in water, and subjected to a gas chromatography/mass spectrometry procedure to analyze the volatile organic components.
    Type: Grant
    Filed: March 8, 1995
    Date of Patent: March 18, 1997
    Assignee: Dresser Industries, Inc.
    Inventors: John Troost, George Prokuda, James A. Petersen