Patents by Inventor Edward T. Wall

Edward T. Wall 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 recovering carbon products from oil shale
    Patent number: 4376034
    Abstract: A method and apparatus for recovering and simultaneously partially refining hydrocarbon products such as liquid oil, oil vapor and combustible and noncombustible gases from oil shale, by subjecting the oil shale ore, in fragments between 5 and 10 cm, or larger, to microwave energy at frequencies between 300 MHz and 3000 MHz. The apparatus includes kiln structures closed to air and microwave leakage, and associated microwave generators for both continuous discrete and batch processes. The microwave energy may also be applied in situ to beds and deposits of the oil shale.
    Type: Grant
    Filed: December 5, 1980
    Date of Patent: March 8, 1983
    Inventor: Edward T. Wall