Patents by Inventor Jude J. Eziashi

Jude J. Eziashi 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).

  • Solvent dewaxing with solvents near miscibility limit
    Patent number: 11198827
    Abstract: Systems and methods are provided for performing solvent dewaxing using a dewaxing solvent that is not fully miscible with the feed being dewaxed. It has been unexpectedly discovered that by operating with a ketone solvent mixture that is beyond the miscibility limit by a small amount, the rate of solvent dewaxing can be substantially increased. Additionally, the difference between the filtration temperature during solvent dewaxing and the pour point of the resulting dewaxed product is unexpectedly reduced. The dewaxing solvent beyond the miscibility limit can correspond to, for example, a solvent mixture where the weight percent of methyl ethyl ketone is beyond the miscibility limit by 0.1 vol % to 5.0 vol %.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: December 14, 2021
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Ilona Molotoka, James W. Gleeson, Joshua J. Matthews, Kristen L. Sullivan, Jude J. Eziashi, David Killgore, Jon D. Lachapelle, Gaither M. Phillips
  • SOLVENT DEWAXING WITH SOLVENTS NEAR MISCIBILITY LIMIT
    Publication number: 20200263099
    Abstract: Systems and methods are provided for performing solvent dewaxing using a dewaxing solvent that is not fully miscible with the feed being dewaxed. It has been unexpectedly discovered that by operating with a ketone solvent mixture that is beyond the miscibility limit by a small amount, the rate of solvent dewaxing can be substantially increased. Additionally, the difference between the filtration temperature during solvent dewaxing and the pour point of the resulting dewaxed product is unexpectedly reduced. The dewaxing solvent beyond the miscibility limit can correspond to, for example, a solvent mixture where the weight percent of methyl ethyl ketone is beyond the miscibility limit by 0.1 vol % to 5.0 vol %.
    Type: Application
    Filed: February 5, 2020
    Publication date: August 20, 2020
    Inventors: Ilona Molotoka, James W. Gleeson, Joshua J. Matthews, Kristen L. Sullivan, Jude J. Eziashi, David Killgore, Jon D. Lachapelle, Gaither M. Phillips