Patents by Inventor Irwin Andrew Wiehe

Irwin Andrew Wiehe 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).

  • Dissolution and stabilization of thermally converted bitumen
    Patent number: 6355159
    Abstract: A heavy hydrocarbon is rendered pipelineable by hydroconverting the heavy hydrocarbon under conditions sufficient to obtain a product oil of lowered viscosity and an API gravity suitable for pipelining and thereafter adding a diluent modified hydrocarbon to the product oil in an amount sufficient to stabilize the product oil against asphaltene phase separation and when phase separated asphaltene is present to dissolve the phase separated asphaltenes.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: March 12, 2002
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Ronald Damian Myers, Mainak Ghosh, Michelle A. Young, Tapan Chakrabarty, Bruce M. Sankey, Irwin Andrew Wiehe