Patents by Inventor Jennifer D. Jewson

Jennifer D. Jewson 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 direct oxidation of propylene to propylene oxide and large particle size titanium silicalite catalysts for use therein
    Patent number: 7399726
    Abstract: Large crystals of titanium silicalite or intergrowths of intergrown smaller crystals, having a mean particle size greater than 2 ?m, have been found catalytically effective at commercially reasonable rates for the epoxidation of olefins in the presence of hydrogen peroxide. Crystals synthesized with a silica source having a low sodium content exhibit high levels of production and selectivity. The crystals have a low attrition rate and are easily filterable from a product stream.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: July 15, 2008
    Assignee: Lyondell Chemical Technology, L.P.
    Inventors: Bernard Cooker, Wilson H. Onimus, Jennifer D. Jewson, Ralph M. Dessau
  • Process for direct oxidation of propylene to propylene oxide and large particle size titanium silicalite catalysts for use therein
    Patent number: 6960671
    Abstract: Large crystals of titanium silicalite or intergrowths of intergrown smaller crystals, having a mean particle size greater than 2 ?m, have been found catalytically effective at commercially reasonable rates for the epoxidation of olefins in the presence of hydrogen peroxide. Crystals synthesized with a silica source having a low sodium content exhibit high levels of production and selectivity. The crystals have a low attrition rate and are easily filterable from a product stream.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: November 1, 2005
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Bernard Cooker, Wilson H. Onimus, Jennifer D. Jewson, Ralph M. Dessau
  • Process for direct oxidation of propylene to propylene oxide and large particle size titanium silicalite catalysts for use therein
    Publication number: 20040059139
    Abstract: Large crystals of titanium silicalite or intergrowths of intergrown smaller crystals, having a mean particle size greater than 2 &mgr;m, have been found catalytically effective at commercially reasonable rates for the epoxidation of olefins in the presence of hydrogen peroxide. Crystals synthesized with a silica source having a low sodium content exhibit high levels of production and selectivity. The crystals have a low attrition rate and are easily filterable from a product stream.
    Type: Application
    Filed: September 20, 2002
    Publication date: March 25, 2004
    Inventors: Bernard Cooker, Wilson H. Onimus, Jennifer D. Jewson, Ralph M. Dessau
  • Direct epoxidation process using improved catalyst composition
    Publication number: 20030204101
    Abstract: Highly selective and productive epoxidation catalysts are prepared by combining a titanium zeolite, palladium, and a gold promoter. The resulting materials are useful catalysts for transforming olefins to epoxides in the reaction of an olefin, hydrogen, and oxygen.
    Type: Application
    Filed: May 9, 2003
    Publication date: October 30, 2003
    Applicant: ARCO CHEMICAL TECHNOLOGY, L.P.
    Inventors: Jennifer D. Jewson, C. Andrew Jones, Ralph M. Dessau
  • Solid epoxidation catalyst and preparation
    Patent number: 6555493
    Abstract: The stability of a noble metal/titanium zeolite catalyst is improved by elevated temperature calcination with an oxygen containing gas; the catalyst is useful in epoxidation involving the reaction of olefin, oxygen and hydrogen.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: April 29, 2003
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Bernard Cooker, Jennifer D. Jewson, Wilson H. Onimus
  • Epoxidation catalyst and process
    Publication number: 20020072623
    Abstract: The stability of a noble metal/titanium zeolite catalyst is improved by elevated temperature calcination with an oxygen containing gas; the catalyst is useful in epoxidation involving the reaction of olefin, oxygen and hydrogen.
    Type: Application
    Filed: June 4, 2001
    Publication date: June 13, 2002
    Applicant: ARCO CHEMICAL TECHNOLOGY, L.P.
    Inventors: Bernard Cooker, Jennifer D. Jewson, Wilson H. Onimus
  • Epoxidation catalyst and process
    Patent number: 6281369
    Abstract: The stability of a noble metal/titanium zeolite catalyst is improved by elevated temperature calcination with an oxygen containing gas; the catalyst is useful in epoxidation involving the reaction of olefin, oxygen and hydrogen.
    Type: Grant
    Filed: December 7, 2000
    Date of Patent: August 28, 2001
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Bernard Cooker, Jennifer D. Jewson, Wilson H. Onimus
  • Epoxidation process
    Patent number: 6008388
    Abstract: The selectivity of an olefin epoxidation catalyzed by a noble metal-modified titanium or vanadium zeolite is greatly enhanced by the addition of a nitrogen compound to the reaction mixture. The epoxidation utilizes hydrogen and oxygen in addition to the olefin.
    Type: Grant
    Filed: April 12, 1999
    Date of Patent: December 28, 1999
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Ralph M. Dessau, Andrew P. Kahn, Roger A. Grey, C. Andrew Jones, Jennifer D. Jewson
  • Chloride containing silver catalysts for propylene epoxidation
    Patent number: 5965480
    Abstract: Direct oxidation of propylene to propylene oxide is accomplished using alkaline earth metal compound-supported silver catalysts containing an inorganic chloride promoter and a potassium promoter derived from a potassium salt containing a nitrogen oxyanion or precursor thereof.
    Type: Grant
    Filed: March 5, 1998
    Date of Patent: October 12, 1999
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Bernard Cooker, Anne M. Gaffney, Jennifer D. Jewson, Wilson H. Onimus
  • Epoxidation process using supported silver catalysts treated with carbon dioxide
    Patent number: 5856534
    Abstract: The catalytic performance of a supported silver catalyst in a propylene epoxidation process is improved by first contacting the catalyst at an elevated temperature with a treatment stream comprised of carbon dioxide. The carbon dioxide-treated catalyst is thereafter contacted with a feedstream containing propylene, molecular oxygen, but essentially no carbon dioxide under conditions effective to form propylene oxide.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: January 5, 1999
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Bernard Cooker, Anne M. Gaffney, Jennifer D. Jewson, Andrew P Kahn
  • Propylene epoxidation using chloride-containing silver catalysts
    Patent number: 5780657
    Abstract: Direct oxidation of propylene to propylene oxide is accomplished using alkaline earth metal compound-supported silver catalysts containing an inorganic chloride promoter and a potassium promoter derived from a potassium salt containing a nitrogen oxyanion or precursor thereof.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: July 14, 1998
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Bernard Cooker, Anne M. Gaffney, Jennifer D. Jewson, Wilson H. Onimus
  • Epoxidation process using supported silver catalysts pretreated with organic chloride
    Patent number: 5770746
    Abstract: A propylene epoxidation process wherein a supported silver catalyst is utilized may be operated at high efficiency even in the absence of any organic chloride in the feedstream, provided the catalyst is first contacted at an elevated temperature with a treatment stream comprised of an organic chloride and molecular oxygen.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: June 23, 1998
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Bernard Cooker, Anne M. Gaffney, Jennifer D. Jewson, Andrew P. Kahn, Rangasamy Pitchai