Patents by Inventor Stan M. Roberts

Stan M. Roberts 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).

  • Poly-&bgr;-amino acids, preparation and use
    Patent number: 6559283
    Abstract: Poly-&bgr;-amino acids and their use in catalytic organic reactions, especially in epoxidation procedures, are provided.
    Type: Grant
    Filed: June 14, 2001
    Date of Patent: May 6, 2003
    Assignee: Degussa AG
    Inventors: Karlheinz Drauz, Olaf Burkhardt, Stan M. Roberts, John Skidmore, Paul Coffey
  • Catalysts for the enantioselective epoxidation of C═C double bonds
    Patent number: 6538105
    Abstract: Compositions are disclosed which comprise a homopolyamino acid and stereoisomers thereof adsorbed on an insoluble support material. The compositions are useful as catalysts for the stereoselective epoxidation of olefins.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: March 25, 2003
    Assignee: Degussa AG
    Inventors: Karlheinz Drauz, Stan M. Roberts, Thomas Geller, Anupma Dhanda
  • Poly-beta-amino acids, preparation and use
    Publication number: 20020038042
    Abstract: Poly-&bgr;-amino acids and their use in catalytic organic reactions, especially in epoxidation procedures, are provided.
    Type: Application
    Filed: June 14, 2001
    Publication date: March 28, 2002
    Applicant: Degussa AG
    Inventors: Karlheinz Drauz, Olaf Burkhardt, Stan M. Roberts, John Skidmore, Paul Coffey
  • Process for the enantioselective epoxidation of C═C double bonds
    Patent number: 6225482
    Abstract: A process for the enantioselective epoxidation of C═C double bonds and use of the epoxides. The present invention provides a process for the enantioselective epoxidation of compounds of the formula I by means of a diastereomer and enantiomer enriched homopolyamino acid and an oxidizing agent. The epoxides prepared according to the invention are used as intermediates in organic syntheses.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: May 1, 2001
    Assignee: Degussa-Huls Aktiengesellschaft
    Inventors: Karlheinz Drauz, Stan M. Roberts, John Skidmore