Patents by Inventor Sara M. Berberich

Sara M. Berberich 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).

  • Lubricant base oil hydroprocessing and blending
    Patent number: 9587184
    Abstract: Methods are provided for producing a plurality of lubricant base oil products with an increased overall yield. Prior to the final hydrocracking stage for viscosity index uplift, a feed for making a lubricant base oil is fractionated in order to form at least a feed for making a lighter lubricant base oil and a feed for making a heavier lubricant base oil. The fractionation cut points are selected to so that the feed fraction for forming a light lubricant base oil has a higher Noack volatility and a lower viscosity than the desired targets for the lighter lubricant base oil. The feed fractions are then hydroprocessed separately to achieve desired properties. After hydroprocessing, a portion of the heavier base oil is blended into the light lubricant base oil to produce a blended base oil product. This returns the volatility and the viscosity of the blended base oil to the desired specifications.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: March 7, 2017
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Eric D. Joseck, Michael Brian Carroll, David Mentzer, Sara M. Berberich, Yogi V. Shukla
  • LUBRICANT BASE OIL HYDROPROCESSING AND BLENDING
    Publication number: 20150027925
    Abstract: Methods are provided for producing a plurality of lubricant base oil products with an increased overall yield. Prior to the final hydrocracking stage for viscosity index uplift, a feed for making a lubricant base oil is fractionated in order to form at least a feed for making a lighter lubricant base oil and a feed for making a heavier lubricant base oil. The fractionation cut points are selected to so that the feed fraction for forming a light lubricant base oil has a higher Noack volatility and a lower viscosity than the desired targets for the lighter lubricant base oil. The feed fractions are then hydroprocessed separately to achieve desired properties. After hydroprocessing, a portion of the heavier base oil is blended into the light lubricant base oil to produce a blended base oil product. This returns the volatility and the viscosity of the blended base oil to the desired specifications.
    Type: Application
    Filed: September 21, 2011
    Publication date: January 29, 2015
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Eric D. Joseck, Michael Brian Carroll, David Mentzer, Sara M. Berberich, Yogi V. Shukla