Patents by Inventor Elizabeth Stavens

Elizabeth Stavens 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).

  • Patent number: 7914665
    Abstract: The invention relates to a process for preparing lube oil basestocks from lube oil boiling range feeds. More particularly, the present invention is directed toward a process wherein a wax containing feed is solvent dewaxed to produce at least a partially dewaxed lube oil boiling range stream, which is hydrodewaxed to produce a first lube basestock. The first lube basestock is added to an independently selected second lube basestock and additives to make a lubricating oil.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: March 29, 2011
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Lei Zhang, Elizabeth Stavens, Lisa I-Ching Yeh, Ian A. Cody, William J. Murphy, Thomas R. Palmer
  • Patent number: 7597795
    Abstract: A process for producing lube oil basestocks involving solvent extracting a waxy feed to produce at least a lube oil boiling range raffinate, hydrotreating the lube oil raffinate to produce a hydrotreated raffinate, and dewaxing the hydrotreated raffinate.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: October 6, 2009
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Gary P. Schleicher, Kenneth L. Riley, Elizabeth Stavens, Sylvain Hantzer
  • Publication number: 20080171675
    Abstract: This invention relates to basestocks and base oils with improved low temperature properties and formulated lubricant compositions or functional fluids created by blending at least one such lube basestock with at least one component selected from dispersants, detergents, wear inhibitors, antioxidants, rust inhibitors, demulsifiers, extreme pressure agents, friction modifiers, multifunction additives, viscosity index improvers, pour point depressants, and foam inhibitors. In particular the invention relates to dewaxed lube basestocks having a Free Carbon Index of less than 4.3 and an Epsilon Carbon mole % of less than 14%. Formulated engine oils using such dewaxed basestocks exhibit improved low temperature properties as may be measured by the Mini Rotary Viscometer test.
    Type: Application
    Filed: May 26, 2006
    Publication date: July 17, 2008
    Inventors: Lisa Ching Yeh, Elizabeth Stavens, Robert R. Palmer, Michael Lacey, Lei Zhang
  • Publication number: 20080116108
    Abstract: The invention relates to a process for preparing lube oil basestocks from lube oil boiling range feeds. More particularly, the present invention is directed toward a process wherein a wax containing feed is solvent dewaxed to produce at least a partially dewaxed lube oil boiling range stream, which is hydrodewaxed to produce a first lube basestock. The first lube basestock is added to an independently selected second lube basestock and additives to make a lubricating oil.
    Type: Application
    Filed: November 14, 2005
    Publication date: May 22, 2008
    Inventors: Lei Zhang, Elizabeth Stavens, Lisa I-Ching Yeh, Ian A. Cody, William J. Murphy, Thomas R. Palmer
  • Publication number: 20070293709
    Abstract: A process for converting methane to higher hydrocarbon(s) including aromatic hydrocarbon(s) in a reaction zone comprises providing to a hydrocarbon feedstock containing methane and a catalytic particulate material to the reaction zone and contacting the catalytic particulate material and the hydrocarbon feedstock in a substantially countercurrent fashion in the reaction zone, while operating the reaction zone under reaction conditions sufficient to convert at least a portion of said methane to a first effluent having said higher hydrocarbon(s).
    Type: Application
    Filed: April 2, 2007
    Publication date: December 20, 2007
    Inventors: Larry Iaccino, Neeraj Sangar, Elizabeth Stavens, Matthew Vincent
  • Publication number: 20070276171
    Abstract: In a process for converting methane to higher hydrocarbons including aromatic hydrocarbons, a feed containing methane is contacted with a dehydrocyclization catalyst in a reaction zone under conditions effective to convert said methane to aromatic hydrocarbons. A first portion of the catalyst is transferred from the reaction zone to a heating zone, where the first catalyst portion is heated by contacting the catalyst with hot combustion gases generated by burning a supplemental source of fuel. The heated first catalyst portion is then returned to the reaction zone.
    Type: Application
    Filed: April 21, 2006
    Publication date: November 29, 2007
    Inventors: Larry Iaccino, Neeraj Sangar, Elizabeth Stavens
  • Publication number: 20070260098
    Abstract: In a process for converting methane to higher hydrocarbons including aromatic hydrocarbons, a feed containing methane is contacted with a dehydrocyclization catalyst under conditions effective to convert said methane to aromatic hydrocarbons and produce a first effluent stream comprising aromatic hydrocarbons and hydrogen, wherein said first effluent stream comprises at least 5 wt % more aromatic hydrocarbons than said feed. At least part of the hydrogen from said first effluent stream is then reacted with an oxygen-containing species, such as carbon dioxide, to produce a second effluent stream having a reduced hydrogen content compared with said first effluent stream.
    Type: Application
    Filed: December 2, 2005
    Publication date: November 8, 2007
    Inventors: Larry Iaccino, Xiaobing Feng, Matthew Vincent, Elizabeth Stavens
  • Publication number: 20070129587
    Abstract: In a process for converting methane to higher hydrocarbons including aromatic hydrocarbons, a feed containing methane is contacted with a dehydrocyclization catalyst in a reaction zone under conditions effective to convert said methane to aromatic hydrocarbons. A first portion of the catalyst is transferred from the reaction zone to a heating zone, where the first catalyst portion is heated by contacting the catalyst with hot combustion gases generated by burning a supplemental source of fuel. The heated first catalyst portion is then returned to the reaction zone.
    Type: Application
    Filed: April 21, 2006
    Publication date: June 7, 2007
    Inventors: Larry Iaccino, Neeraj Sangar, Elizabeth Stavens
  • Publication number: 20050109673
    Abstract: A process for producing lube oil basestocks involving solvent extracting a waxy feed to produce at least a lube oil boiling range raffinate, hydrotreating the lube oil raffinate to produce a hydrotreated raffinate, and dewaxing the hydrotreated raffinate.
    Type: Application
    Filed: September 24, 2004
    Publication date: May 26, 2005
    Inventors: Gary Schleicher, Kenneth Riley, Elizabeth Stavens, Sylvain Hantzer