Patents by Inventor Sandra J. Linek

Sandra J. Linek 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).

  • Raffinate hydroconversion process
    Patent number: 6325918
    Abstract: A process for producing a high VI/low volatility lubricating oil basestock and a lubricating oil basestock prepared by said process. The process comprises subjecting the raffinate from a solvent extraction step to a two step, single stage hydroconversion process wherein the first step involves severe hydroconversion of the raffinate followed by a cold hydrofinishing step.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: December 4, 2001
    Assignee: ExxonMobile Research and Engineering Company
    Inventors: Ian A. Cody, Douglas R. Boate, Sandra J. Linek, William J. Murphy, John E. Gallagher, Gary L. Harting
  • Hydroconversion process for making lubricating oil basestocks
    Patent number: 6322692
    Abstract: A process for producing a lubricating oil basestock having at least 90 wt. % saturates and a VI of at least 105 by selectively hydroconverting a raffinate from a solvent extraction zone in a two step hydroconversion zone followed by a hydrofinishing zone, and a lubricating oil basestock produced by said process.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: November 27, 2001
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Ian A. Cody, Douglas R. Boate, Sandra J. Linek, William J. Murphy, John E. Gallagher, Alberto Ravella, Richard A. Demmin
  • Hydroprocessing with catalytic silicoaluminophosphates having an AEL structure
    Patent number: 6294081
    Abstract: Disclosed are silicoaluminophosphates (SAPOs) having unique silicon distributions, a method for their preparation and their use as catalysts for the hydroprocessing of hydrocarbon feedstocks. More particularly, the new SAPOs have a high silica:alumina ratio, and are prepared from microemulsions containing surfactants.
    Type: Grant
    Filed: May 20, 1999
    Date of Patent: September 25, 2001
    Assignee: ExxonMobil Chemical Patents, Inc.
    Inventors: Javier Agundez Rodriguez, Joaquin Perez Pariente, Antonio Chica Lara, Avelino Corma Canos, Ian A. Cody, William J. Murphy, Sandra J. Linek
  • Silicoaluminophosphates having AEL structure, a method for their preparation and their use as catalysts for the hydroprocessing of hydrocarbon feedstocks
    Patent number: 6238550
    Abstract: Disclosed are silicoaluminophosphates (SAPOs) having unique silicon distributions, a method for their preparation and their use as catalysts for the hydroprocessing of hydrocarbon feedstocks. More particularly, the new SAPOs have a high silica:alumina ratio, and may be prepared from single phase synthesis solutions or from microemulsions containing surfactants.
    Type: Grant
    Filed: May 20, 1999
    Date of Patent: May 29, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Karl G. Strohmaier, David E. W. Vaughan, William J. Murphy, Ian A. Cody, Sandra J. Linek