Patents by Inventor Mark B. Stutman

Mark B. Stutman 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).

  • Soil-gas sampling apparatus
    Patent number: 5235863
    Abstract: Apparatus for soil-gas sampling comprising one or more passive vapor collectors enclosed within a liquid water penetration resistant vapor-permeable container to which means for easy in-ground insertion and retrieval is attached. The apparatus provides protection from water, dirt and mechanical damage to the vapor collector(s) during the insertion, sampling and removal steps and permits retrieval of the container from its in-ground location without the efforts and risks associated with excavation.
    Type: Grant
    Filed: May 29, 1992
    Date of Patent: August 17, 1993
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Christian E. Bailey, Mark B. Stutman