Patents by Inventor L. L. Ansell

L. L. Ansell 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).

  • Patent number: 6294076
    Abstract: The invention is a process for producing a mixture of Fischer-Tropsch product that is solid at ambient conditions (between 32° F. and 95° F.), such as wax, and hydrocarbon liquid, such as naphtha, that can be pumped at ambient temperature (between 32° F. and 95° F.). The temperature of the mixture is controlled below the melting point of the Fischer-Tropsch product. The present invention provides for the transport of Fischer-Tropsch product from a remote location in a readily available medium, such as naphtha, via pipeline, tanker or railcar. At the completion of the transport, the hydrocarbon liquid and Fischer-Tropsch product are separated by conventional methods such as flashing, distillation, or filtration with minimal contamination from the hydrocarbon liquid.
    Type: Grant
    Filed: April 21, 2000
    Date of Patent: September 25, 2001
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: W. B. Genetti, L. L. Ansell, Daniel F. Ryan, Paul J. Berlowitz