Patents by Inventor Robert T. Chamberlain

Robert T. Chamberlain 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).

  • Dry transfer method for the preparation of explosives test samples
    Patent number: 6470730
    Abstract: A method of preparing samples for testing explosive and drug detectors of the type that search for particles in air. A liquid containing the substance of interest is placed on a flexible Teflon® surface and allowed to dry, then the Teflon® surface is rubbed onto an item that is to be tested for the presence of the substance of interest. The particles of the substance of interest are transferred to the item but are readily picked up by an air stream or other sampling device and carried into the detector.
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: October 29, 2002
    Assignee: The United States of America as represented by the Secretary of Transportation
    Inventor: Robert T. Chamberlain