Patents by Inventor Thomas Geller

Thomas Geller 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).

  • Polyamino acid-catalyzed process for the enantioselective epoxidation of alpha,beta-unsaturated enones and alpha,beta-unsaturated sulfones
    Publication number: 20050027131
    Abstract: The invention relates to a novel process that makes it possible to epoxidize ?,?-unsaturated enones or ?,?-unsaturated sulfones with high conversions and enantiomeric excesses in a two-phase system without addition of water in the presence of an organic solvent, a base, an oxidant, a diastereomer- and enantiomer-enriched homo-polyamino acid that has not been separately preactivated as catalyst, and a specific phase-transfer catalyst as cocatalyst.
    Type: Application
    Filed: August 25, 2004
    Publication date: February 3, 2005
    Inventors: Thomas Geller, Christa Kruger, Hans-Christian Militzer
  • Process using catalyst comprising soluble polymer and polymino acid
    Patent number: 6841689
    Abstract: There is provided a process for the addition of a nucleophile across an electron poor carbon-carbon double bond (a Michael addition) comprising contacting in a solvent: i) a nucleophile; ii) a compound comprising an electron poor double bond; and iii) a catalyst comprising a soluble polymer and a polyamino acid.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: January 11, 2005
    Assignee: Stylacats Limited
    Inventors: Stanley Roberts, John Skidmore, Robert Flood, Thomas Geller
  • Polyamino acid-catalyzed process for the enantioselective epoxidation of &agr;, &bgr;-unsaturated enones and &agr;, &bgr;-unsaturated sulfones
    Patent number: 6822053
    Abstract: The invention relates to a novel process that makes it possible to epoxidize &agr;,&bgr;-unsaturated enones or &agr;,&bgr;-unsaturated sulfones with high conversions and enantiomeric excesses in a two-phase system without addition of water in the presence of an organic solvent, a base, an oxidant, a diastereomer- and enantiomer-enriched homo-polyamino acid that has not been separately preactivated as catalyst, and a specific phase-transfer catalyst as cocatalyst.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: November 23, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thomas Geller, Christa Maria Krüger, Hans-Christian Militzer
  • Polyamino acid-catalyzed process for the enantioselective epoixdation of &agr;,&bgr;-unsaturated enones and &agr;,&bgr;-unsaturated sulfones
    Patent number: 6770766
    Abstract: The invention relates to a novel process that makes it possible to epoxidize &agr;,&bgr;-unsaturated enones or &agr;,&bgr;-unsaturated sulfones with high conversions and enantiomeric excesses in the presence of a water-soluble base, an oxidant, a diastereomer- and enantiomer-enriched homo-polyamino acid as catalyst, water, an organic solvent that is immiscible or has only limited miscibility with water, and a specific phase-transfer catalyst as cocatalyst.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: August 3, 2004
    Assignee: Bayer Chemicals AG
    Inventors: Thomas Geller, Christa Maria Krüger, Hans-Christian Militzer
  • Optically active 2,5-bisaryl-delta1-pyrrolines and their use as pest control agents
    Publication number: 20040059129
    Abstract: Novel optically active &Dgr;1-pyrrolines of the formula (I) 1
    Type: Application
    Filed: July 28, 2003
    Publication date: March 25, 2004
    Inventors: Andrew Plant, Thomas Geller, Bernd Gallenkamp, Rolf Grosser, Albrecht Marhold, Christoph Erdelen, Andreas Turberg, Olaf Hansen
  • Catalyst comprising soluble polymer and polymino acid
    Publication number: 20040048739
    Abstract: There is provided a process for the addition of a nucleophile across an electron poor carbon-carbon double bond (a Michael addition) comprising contacting in a solvent: i) a nucleophile; ii) a compound comprising an electron poor double bond; and iii) a catalyst comprising a soluble polymer and a polyamino acid.
    Type: Application
    Filed: September 8, 2003
    Publication date: March 11, 2004
    Inventors: Stanley Roberts, John Skidmore, Robert Flood, Thomas Geller
  • Polyamino acid-catalyzed process for the enantioselective epoxidation of &agr;,&bgr;-unsaturated enones and &agr;,&bgr;-unsaturated sulfones
    Patent number: 6700004
    Abstract: The invention relates to a novel process that makes it possible to epoxidize &agr;,&bgr;-unsaturated enones or &agr;,&bgr;-unsaturated sulfones with high conversions and enantiomeric excesses in the presence of a water-soluble base, an oxidant, water, an organic solvent that is immiscible or has only limited miscibility with water, a preactivated diastereomer- and enantiomer-enriched homo-polyamino acid as catalyst, and a specific phase-transfer catalyst as cocatalyst.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: March 2, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thomas Geller, Christa Maria Krüger, Hans-Christian Militzer
  • Polyamino acid-catalyzed process for the enantioselective epoxidation of alpha,beta-unsaturated enones and alpha,beta-unsaturated sulfones
    Publication number: 20030087401
    Abstract: The invention relates to a novel process that makes it possible to epoxidize &agr;,&bgr;-unsaturated enones or &agr;,&bgr;-unsaturated sulfones with high conversions and enantiomeric excesses in the presence of a water-soluble base, an oxidant, a diastereomer- and enantiomer-enriched homo-polyamino acid as catalyst, water, an organic solvent that is immiscible or has only limited miscibility with water, and a specific phase-transfer catalyst as cocatalyst.
    Type: Application
    Filed: July 24, 2002
    Publication date: May 8, 2003
    Inventors: Thomas Geller, Christa Maria Kruger, Hans-Christian Militzer
  • Polyamino acid-catalyzed process for the enantioselective epoxidation of alpha,beta-unsaturated enones and alpha,beta-unsaturated sulfones
    Publication number: 20030064486
    Abstract: The invention relates to a novel process that makes it possible to epoxidize &agr;,&bgr;-unsaturated enones or &agr;,&bgr;-unsaturated sulfones with high conversions and enantiomeric excesses in the presence of a water-soluble base, an oxidant, water, an organic solvent that is immiscible or has only limited miscibility with water, a preactivated diastereomer- and enantiomer-enriched homo-polyamino acid as catalyst, and a specific phase-transfer catalyst as cocatalyst.
    Type: Application
    Filed: July 24, 2002
    Publication date: April 3, 2003
    Inventors: Thomas Geller, Christa Maria Kruger, Hans-Christian Militzer
  • 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
  • Polyamino acid-catalyzed process for the enantioselective epoxidation of alpha, beta-unsaturated enones and alpha, beta-unsaturated sulfones
    Publication number: 20030050486
    Abstract: The invention relates to a novel process that makes it possible to epoxidize &agr;,&bgr;-unsaturated enones or &agr;,&bgr;-unsaturated sulfones with high conversions and enantiomeric excesses in a two-phase system without addition of water in the presence of an organic solvent, a base, an oxidant, a diastereomer- and enantiomer-enriched homo-polyamino acid that has not been separately preactivated as catalyst, and a specific phase-transfer catalyst as cocatalyst.
    Type: Application
    Filed: July 24, 2002
    Publication date: March 13, 2003
    Inventors: Thomas Geller, Christa Maria Kruger, Hans-Christian Militzer