Patents by Inventor Andrew R. Trenholm

Andrew R. Trenholm 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).

  • Method and apparatus for monitoring particles in a flowing gas
    Patent number: 7100423
    Abstract: A method and apparatus for monitoring particulate matter in a gas sample and the air quality associated therewith is provided.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: September 5, 2006
    Assignee: Midwest Research Institute
    Inventor: Andrew R. Trenholm