Patents by Inventor Cliff E. Hereford, deceased

Cliff E. Hereford, deceased 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).

  • Latex detection system
    Patent number: 5462176
    Abstract: A method and apparatus for detecting foreign matter in a particulate material stream, particularly tobacco, including an optical scanner, in combination with a camera system with beam splitter and filters, and a computer to process signals from the camera to determine whether foreign matter is present. If foreign matter is detected, a diverter deviates the flow of the contaminated material onto a discharge conveyor.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: October 31, 1995
    Assignee: Brown & Williamson Tobacco Corporation
    Inventors: Cliff E. Hereford, deceased, Joseph H. Malek