Patents by Inventor Christopher Simmons

Christopher Simmons 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 upgrading Fischer-Tropsch products using dewaxing and hydrofinishing
    Publication number: 20030150777
    Abstract: A process for producing low pour point diesel and lubricating base oil products by bulk dewaxing a C5 plus Fischer-Tropsch syncrude, hydrofinishing the dewaxed intermediate, and recovering 120 degrees C. plus products having improved properties.
    Type: Application
    Filed: February 8, 2002
    Publication date: August 14, 2003
    Inventors: David R. Johnson, Christopher A. Simmons, Donald H. Mohr, Stephen J. Miller, Stephen K. Lee
  • Process for increasing the yield of lubricating base oil from a Fischer-Tropsch plant
    Patent number: 6605206
    Abstract: A process for increasing the yield of C10 plus hydrocarbon products from a Fischer-Tropsch plant which comprises the steps of (a) separating a Fischer-Tropsch product into a wax fraction and a condensate fraction; (b) dewaxing the wax fraction to produce a high boiling intermediate; (c) hydrofinishing the high boiling intermediate; (d) dehydrating the alcohols in the condensate fraction to convert them into olefins; (e) oligomerizing the olefins to form higher molecular weight hydrocarbons; (f) hydrofinishing the oligomerization mixture; and (g) and recovering a C10 plus hydrocarbon product from the hydrofinishing zone.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: August 12, 2003
    Assignee: Chevron U.S.A. Inc.
    Inventors: David R. Johnson, Christopher A. Simmons, Donald H. Mohr, Stephen J. Miller, Stephen K. Lee, William L. Schinski, Michael S. Driver
  • Process for upgrading of Fischer-Tropsch products
    Publication number: 20030080027
    Abstract: A process for treating nitrogen-containing, substantially paraffinic product derived from a Fischer-Tropsch process. The substantially paraffinic product is purified in a purification process to lower the concentration of oxygen, nitrogen, and other impurities. The nitrogen content of the purified product is monitored, and the conditions of the purification step are adjusted to increase nitrogen removal if the nitrogen content of the purified product exceeds a preselected value.
    Type: Application
    Filed: August 23, 2002
    Publication date: May 1, 2003
    Inventors: John M. Rosenbaum, Christopher A. Simmons, Dennis J. O'Rear
  • Process for upgrading of fischer-tropsch products
    Publication number: 20020128331
    Abstract: A process for treating nitrogen-containing, substantially paraffinic product derived from a Fischer-Tropsch process. The substantially paraffinic product is purified in a purification process to lower the concentration of oxygen, nitrogen, and other impurities. The nitrogen content of the purified product is monitored, and the conditions of the purification step are adjusted to increase nitrogen removal if the nitrogen content of the purified product exceeds a preselected value.
    Type: Application
    Filed: January 11, 2001
    Publication date: September 12, 2002
    Inventors: John M. Rosenbaum, Christopher A. Simmons, Dennis J. O'Rear