Patents by Inventor Richard William Scheu

Richard William Scheu 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).

  • Publication number: 20030127312
    Abstract: A method and system for extracting hydrocarbon fuel products from contaminated soil provides extraction of usable fuel components from waste materials such as oil contaminated materials and soils. The materials (or hydrocarbon portion thereof) are liquified and introduced to a chamber where the liquid material is agitated and a negative relative pressure (vacuum) is applied. The liquid is maintained at a substantially constant temperature and the vacuum draws the off-gas hydrocarbon products out for condensation and further processing, while unconverted char is removed to an ash dump. An auger feed unit with agitator buckets is used to propel the char through a feed while agitating the liquid to enhance the rate of gas removal.
    Type: Application
    Filed: March 19, 2002
    Publication date: July 10, 2003
    Inventors: Donald W. Lemmons, Richard William Scheu