Patents by Inventor Robert Alan Schaefer

Robert Alan Schaefer 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).

  • Extractive distillation controls
    Patent number: 9026252
    Abstract: The invention concerns an improvement in the monitoring and control systems used in a liquid-liquid extraction unit or an extractive distillation unit for the separation of aromatic hydrocarbons from non-aromatic hydrocarbons.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: May 5, 2015
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Robert Alan Schaefer, John J. Monson
  • Extractive Distillation Controls
    Publication number: 20130173061
    Abstract: The invention concerns an improvement in the monitoring and control systems used in a liquid-liquid extraction unit or an extractive distillation unit for the separation of aromatic hydrocarbons from non-aromatic hydrocarbons.
    Type: Application
    Filed: November 21, 2012
    Publication date: July 4, 2013
    Applicant: ExxonMobile Chemical Patents Inc.
    Inventors: Robert Alan Schaefer, John J. Monson