Patents by Inventor Kazimierz O. Wrzeszczynski

Kazimierz O. Wrzeszczynski 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).

  • Upgrading of bitumen asphaltenes by hot water treatment containing carbonate (C-2726)
    Patent number: 5326456
    Abstract: A process for upgrading bitumen asphaltenes obtained from tar sands to hydrocarbons which comprises contacting the bitumen with a deasphalting solvent to yield a deasphalted oil and a residual solid asphaltene, separating the residual solid asphaltene from the deasphalted oil and treating the solid asphaltene fraction with superheated water containing a soluble carbonate salt at temperatures of from 300.degree. to 425.degree. C.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: July 5, 1994
    Assignee: Exxon Research and Engineering Company
    Inventors: Glen B. Brons, Michael Siskin, Kazimierz O. Wrzeszczynski
  • Upgrading of bitumen asphaltenes by hot water treatment
    Patent number: 5316659
    Abstract: A process for upgrading bitumen asphaltenes obtained from tar sands to hydrocarbons which comprises contacting the bitumen with a deasphalting solvent to yield a deasphalted oil and a residual solid asphaltene, separating the residual solid asphaltene from the deasphalted oil and treating the solid asphaltene fraction with superheated water at temperatures of from 300.degree. to 425.degree. C.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: May 31, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventors: Glen B. Brons, Michael Siskin, Kazimierz O. Wrzeszczynski