Patents by Inventor Christine A. Zielinski

Christine A. Zielinski 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).

  • Membrane Separation of Used Oil and Compositions Generated
    Publication number: 20230159852
    Abstract: In an embodiment is provided a process to re-refine used oil that includes introducing a used oil and a solvent to a separation unit under separation conditions selected to produce a purified oil product, the separation unit comprising a porous membrane, a semiporous membrane, or both; and separating the used oil to obtain an effluent comprising a purified oil product. In another embodiment is provided an apparatus for re-refining used oil that includes a separation unit comprising a porous or semiporous membrane; a used oil feed coupled to an inlet of the separation unit; and an inlet of a diffusate collection unit coupled to an outlet of the separation unit. In another embodiment is provided a composition generated from a membrane separation process that includes a base oil, the composition having a soot content of about 0.05% or less.
    Type: Application
    Filed: March 17, 2021
    Publication date: May 25, 2023
    Applicant: EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANY
    Inventors: Christine A. Zielinski, Paul C. Naegely, Meha H. Shah, Charles L. Baker, Jr., Chengrong Wang
  • HYDROCARBON COMPOSITIONS USEFUL AS LUBRICANTS FOR IMPROVED OXIDATION STABILITY
    Publication number: 20230132628
    Abstract: Provided herein are hydrocarbon compositions suitable for use as a lubricant comprising sulfur between about 30 ppm to about 220 ppm, and aromatics between about 0.2 wt. % to about 3 wt. %. The present hydrocarbon compositions comprise a blend of one or more base stocks and a high-sulfur containing material and can demonstrate an improved oxidation performance as a lubricant in weighted piston deposit merits and/or by viscosity increase.
    Type: Application
    Filed: February 12, 2021
    Publication date: May 4, 2023
    Applicant: ExxonMobil Research and Engineering Company
    Inventors: Joshua D. Catanach, Clara Rodrigue, Christine A. Zielinski, Charles L. Baker, JR., Richard C. Dougherty, Min Chen
  • Lubricant base stock production from recycled oil
    Patent number: 11441080
    Abstract: Systems and methods are provided for co-processing of used lubricant oils with a coker feedstock in a fluidized coking process to form lubricant base stocks. The fluidized coking process can remove contaminants and/or additives from used lubricant oils with modest conversion of the lubricant boiling range portion.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: September 13, 2022
    Assignee: EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANY
    Inventors: Richard C. Dougherty, Kristin L. Sanfilippo, Christine A. Zielinski, Charles L. Baker, Jr.
  • LUBRICANT BASE STOCK PRODUCTION FROM RECYCLED OIL
    Publication number: 20200263107
    Abstract: Systems and methods are provided for co-processing of used lubricant oils with a coker feedstock in a fluidized coking process to form lubricant base stocks. The fluidized coking process can remove contaminants and/or additives from used lubricant oils with modest conversion of the lubricant boiling range portion.
    Type: Application
    Filed: January 14, 2020
    Publication date: August 20, 2020
    Inventors: Richard C. Dougherty, Kristin L. Sanfilippo, Christine A. Zielinski, Charles L. Baker, JR.
  • Application of test for residual wax contamination in basestocks to correlate with the low temperature viscometric properties of fully formulated oils
    Patent number: 7875458
    Abstract: Rapid determination of low temperature residual wax contamination in basestock oil provides a basis for real time correlation of basestock quality with the low temperature viscometric properties of fully formulated oils made using said basestock oil.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: January 25, 2011
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: James Douglas Eagan, James William Gleeson, Lisa I-Ching Yeh, Charles Lambert Baker, Jr., Christine A. Zielinski
  • Application of test for residual wax contamination in basestocks to correlate with the low temperature viscometric properties of fully formulated oils
    Publication number: 20050112767
    Abstract: Rapid determination of low temperature residual wax contamination in basestock oil provides a basis for real time correlation of basestock quality with the low temperature viscometric properties of fully formulated oils made using said basestock oil.
    Type: Application
    Filed: November 5, 2004
    Publication date: May 26, 2005
    Inventors: James Eagan, James Gleeson, Lisa Yeh, Charles Baker, Christine Zielinski