Patents by Inventor David Stephen Brown

David Stephen Brown 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).

  • Linear and branched olefin production from cyclic olefin feedstocks
    Patent number: 7041864
    Abstract: Ring opening cross metathesis of secondary non-cyclic hydrocarbons with cyclic unsaturated hydrocarbons having 8 carbon atoms or more to produce corresponding unsaturated product hydrocarbons having more than 8 carbon atoms.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: May 9, 2006
    Assignee: Shell Oil Company
    Inventors: Howard Lam-ho Fong, Michael Wayne Potter, David Stephen Brown
  • Nickel-containing ethylene oligomerization catalyst and use thereof
    Patent number: 6825148
    Abstract: A process for the oligomerization of ethylene to a mixture of olefinic products having high linearity is provided, by using a catalyst comprising a reaction product of a simple divalent nickel salt; a boron hydride reducing agent; a water soluble base; a ligand selected from the group consisting of an o-dihydrocarbylphosphinobenzoic acid and alkali metal salts thereof; and a phosphite.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: November 30, 2004
    Assignee: Shell Oil Company
    Inventors: David Stephen Brown, Richard Edward Robertson
  • Linear and branched olefin production from cyclic olefin feedstocks
    Publication number: 20040116763
    Abstract: Ring opening cross metathesis of secondary non-cyclic hydrocarbons with cyclic unsaturated hydrocarbons having 8 carbon atoms or more to produce corresponding unsaturated product hydrocarbons having more than 8 carbon atoms.
    Type: Application
    Filed: December 11, 2002
    Publication date: June 17, 2004
    Inventors: Howard Lam-ho Fong, Michael Wayne Potter, David Stephen Brown
  • Nickel-containing ethylene oligomerization catalyst and use thereof
    Publication number: 20020173685
    Abstract: A process for the oligomerization of ethylene to a mixture of olefinic products having high linearity is provided, by using a catalyst comprising a reaction product of a simple divalent nickel salt; a boron hydride reducing agent; a water soluble base; a ligand selected from an o-dihydrocarbylphosphinobenzoic acid and alkali metal salt thereof; and, a phosphite.
    Type: Application
    Filed: April 10, 2001
    Publication date: November 21, 2002
    Inventors: David Stephen Brown, Richard Edward Robertson