Patents by Inventor A. R. Rohlik

A. R. Rohlik 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).

  • Process for separating extractable organic material from compositions comprising said extractable organic material intermixed with solids and water
    Patent number: 4981579
    Abstract: This invention provides for a process for separating extractable organic material from a feed composition comprising said extractable organic material intermixed with solids and water, the process comprising the steps of: (A) contacting said feed composition with a first organic solvent, said first organic solvent being capable of dissolving at least about ten parts of said extractable organic material per million parts of said first organic solvent at the temperature wherein at least about 50% by weight of said first organic solvent boils at atmospheric pressure; dissolving at least part of said extractable organic material in said first organic solvent to form a first solution; and separating at least part of said first solution from said feed composition to provide an intermediate composition, part of said first organic solvent remaining intermixed with said intermediate composition; and (B) contacting said intermediate composition with a volatile organic solvent, said voltile organic solvent being capable
    Type: Grant
    Filed: December 2, 1988
    Date of Patent: January 1, 1991
    Assignee: The Standard Oil Company
    Inventors: S. C. Paspek, C. P. Eppig, W. F. Schuller, R. D. Littler, J. B. Hauser, A. R. Rohlik