Patents by Inventor Thomas Riermeier

Thomas Riermeier 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).

  • Patent number: 9844511
    Abstract: The invention relates to a coating composition suitable for the coating of a pharmaceutical or nutraceutical dosage form, comprising a core comprising one or more pharmaceutical or nutraceutical active ingredients, wherein the coating composition is comprising at least 20% by weight of an enteric core/shell polymer composition derived from an emulsion polymerization process, wherein either the core of the core/shell polymer composition is formed by a water-insoluble, not cross-linked polymer or copolymer and the shell of the core/shell polymer composition is formed by an anionic polymer or copolymer or vice versa.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: December 19, 2017
    Assignee: Evonik Roehm GmbH
    Inventors: Kathrin Nollenberger, Jan Hendrik Schattka, Rene Leubert, Florian Hermes, Manfred Assmus, Christian Meier, Thomas Dassinger, Thomas Riermeier
  • Patent number: 8969624
    Abstract: The invention is directed to a phosphine compound represented by general formula (1) wherein R? and R? independently are selected from alkyl, cycloalkyl and 2-furyl radicals, or R? and R? are joined together to form with the phosphorous atom a carbon-phosphorous monocycle comprising at least 3 carbon atoms or a carbon-phosphorous bicycle; the alkyl radicals, cycloalkyl radicals, and carbon-phosphorous monocycle being unsubstituted or substituted by at least one radical selected from the group of alkyl, cycloalkyl, aryl, alkoxy, and aryloxy radicals; Cps is a partially substituted or completely substituted cyclopentadien-1-yl group, including substitutions resulting in a fused ring system, and wherein a substitution at the 1-position of the cyclopentadien-1-yl group is mandatory when the cyclopentadien-1-yl group is not part of a fused ring system or is part of an indenyl group. Also claimed is the use of these phosphines as ligands in catalytic reactions and the preparation of these phosphines.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: March 3, 2015
    Assignee: Evonik Degussa GmbH
    Inventors: Herbert Plenio, Christoph Fleckenstein, Renat Kadyrov, Juan Almena, Axel Monsees, Thomas Riermeier
  • Publication number: 20140086997
    Abstract: The invention relates to a coating composition suitable for the coating of a pharmaceutical or nutraceutical dosage form, comprising a core comprising one or more pharmaceutical or nutraceutical active ingredients, wherein the coating composition is comprising at least 20% by weight of an enteric core/shell polymer composition derived from an emulsion polymerisation process, wherein either the core of the core/shell polymer composition is formed by a water-insoluble, not cross-linked polymer or copolymer and the shell of the core/shell polymer composition is formed by an anionic polymer or copolymer or vice versa.
    Type: Application
    Filed: June 17, 2011
    Publication date: March 27, 2014
    Applicant: Evonik Roehm GmbH
    Inventors: Kathrin Nollenberger, Jan Hendrik Schattka, Rene Leubert, Florian Hermes, Manfred Assmus, Christian Meier, Thomas Dassinger, Thomas Riermeier
  • Publication number: 20140058101
    Abstract: The invention is directed to a phosphine compound represented by general formula (1) wherein R? and R? independently are selected from alkyl, cycloalkyl and 2-furyl radicals, or R? and R? are joined together to form with the phosphorous atom a carbon-phosphorous monocycle comprising at least 3 carbon atoms or a carbon-phosphorous bicycle; the alkyl radicals, cycloalkyl radicals, and carbon-phosphorous monocycle being unsubstituted or substituted by at least one radical selected from the group of alkyl, cycloalkyl, aryl, alkoxy, and aryloxy radicals; Cps is a partially substituted or completely substituted cyclopentadien-1-yl group, including substitutions resulting in a fused ring system, and wherein a substitution at the 1-position of the cyclopentadien-1-yl group is mandatory when the cyclopentadien-1-yl group is not part of a fused ring system or is part of an indenyl group. Also claimed is the use of these phosphines as ligands in catalytic reactions and the preparation of these phosphines.
    Type: Application
    Filed: October 29, 2013
    Publication date: February 27, 2014
    Applicant: Evonik Degussa GmbH
    Inventors: Herbert Plenio, Christoph Fleckenstein, Renat Kadyrov, Juan Almena, Axel Monsees, Thomas Riermeier
  • Patent number: 8618328
    Abstract: Disclosed herein are phosphine compounds represented by the general formula (4): and corresponding phosphonium salts represented by the general formula (4a): Also disclosed are processes for the preparation of these phosphines and phosphonium salts as well as their use as ligands in catalytic reactions.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: December 31, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Herbert Plenio, Christoph Fleckenstein, Renat Kadyrov, Juan Almena, Axel Monsees, Thomas Riermeier
  • Publication number: 20120245348
    Abstract: Disclosed herein are phosphine compounds represented by the general formula (4): and corresponding phosphonium salts represented by the general formula (4a): Also disclosed are processes for the preparation of these phosphines and phosphonium salts as well as their use as ligands in catalytic reactions.
    Type: Application
    Filed: April 2, 2012
    Publication date: September 27, 2012
    Inventors: Herbert PLENIO, Christoph FLECKENSTEIN, Renat KADYROV, Juan ALMENA, Axel MONSEES, Thomas RIERMEIER
  • Patent number: 7834215
    Abstract: The present invention is based on new ligand systems of the general formula (I). These ligand systems can be used advantageously in transition metal-catalyzed asymmetric syntheses. Likewise encompassed are the transition metal complexes thus prepared, a process for preparing the ligands and the use of the complexes in asymmetric synthesis.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: November 16, 2010
    Assignee: Evonik Degussa GmbH
    Inventors: Jens Holz, Armin Boerner, Odalys Esperanza Zayas Vargas, Juan Jose Almena Perea, Axel Monsees, Renat Kadyrov, Thomas Riermeier
  • Patent number: 7763739
    Abstract: The present invention concerns novel bidentante optionally N-containing P-ligands of general formula (I) embracing a two-ring-system and processes for synthesizing them, transition metal complexes of these compounds and their use as catalysts.
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: July 27, 2010
    Assignee: Evonik Degussa, GmbH
    Inventors: Renat Kadyrov, Juan José Almena Perea, Axel Monsees, Thomas Riermeier, Ilias Ilaldinov
  • Publication number: 20100105945
    Abstract: Catalyst systems consisting of supported or unsupported transition metal catalysts which have modifiers on the surface. The modifiers have sulphur-containing functionalities (G0). In addition, the modifiers may have a spacer (Sp) and a Bronsted-basic, Bronsted-acidic or Lewis-basic functionality (G1). The catalyst systems may be used for hydrogenation, reductive alkylation and reductive amination.
    Type: Application
    Filed: January 28, 2008
    Publication date: April 29, 2010
    Inventors: Dorit Wolf, Thomas Riermeier, Karlheinz Drauz, Christoph Weber
  • Patent number: 7612240
    Abstract: The present invention is directed to a process for preparing compounds of the general formula (I). Compounds of the general formula (I) are advantageous precursors for preparing phospholane catalysts, especially bisphospholane catalysts. The invention therefore likewise provides for the use of the substances in question for preparing these catalysts.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: November 3, 2009
    Assignee: Evonik Degussa GmbH
    Inventors: Armin Börner, Jens Holz, Juan Almena, Renat Kadyrov, Axel Monsees, Thomas Riermeier
  • Publication number: 20090253907
    Abstract: A phosphine compound represented by general formula (1) wherein R? and R? independently are selected from alkyl, cycloalkyl and 2-furyl radicals, or R? and R? are joined together to form with the phosphorous atom a carbon-phosphorous monocycle including at least 3 carbon atoms or a carbon-phosphorous bicycle; the alkyl radicals, cycloalkyl radicals, and carbon-phosphorous monocycle being unsubstituted or substituted by at least one radical selected from the group of alkyl, cycloalkyl, aryl, alkoxy, and aryloxy radicals; Cps is a partially substituted or completely substituted cyclopentadien-1-yl group, including substitutions resulting in a fused ring system, and wherein a substitution at the 1-position of the cyclopentadien-1-yl group is mandatory when the cyclopentadien-1-yl group is not part of a fused ring system or is part of an indenyl group. These phosphines can be used as ligands in catalytic reactions.
    Type: Application
    Filed: August 14, 2007
    Publication date: October 8, 2009
    Inventors: Herbert Plenio, Christoph Fleckenstein, Renat Kadyrov, Juan Almena, Axel Monsees, Thomas Riermeier
  • Patent number: 7589081
    Abstract: The present invention relates to novel nitrogen-containing monodentate phosphane ligands of formula (I) and to their use in catalytic reactions, especially in the improvement of haloaromatic compounds.
    Type: Grant
    Filed: May 3, 2004
    Date of Patent: September 15, 2009
    Assignee: DEGUSSA GmbH
    Inventors: Alexander Zapf, Mark Sundermeier, Ralf Jackstell, Matthias Beller, Thomas Riermeier, Axel Monsees, Uwe Dingerdissen
  • Patent number: 7589215
    Abstract: The present invention relates to ligands of the general formula (I). In addition, a process for the production thereof and the use thereof are demonstrated.
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: September 15, 2009
    Assignee: Degussa AG
    Inventors: Armin Boerner, Jens Holz, Axel Monsees, Thomas Riermeier, Renat Kadyrov, Carsten A. Schneider, Uwe Dingerdissen, Karlheinz Drauz
  • Patent number: 7531697
    Abstract: (Hetero)aromatic are prepared from halogen-substituted (hetero)aromatic compounds in the presence of a base and a palladium catalyst having a nonpyrophoric monodentate phosphane ligand. The phosphane ligand structure includes two radical groups having a tertiary carbon attached directly to phosphorous and one radical group having a primary carbon attached to the phosphorous.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: May 12, 2009
    Assignee: Degussa GmbH
    Inventors: Juan Jose Almena Perea, Axel Monsees, Renat Kadyrov, Thomas Riermeier, Kai Rossen, Wolf-Ruediger Krahnert, Matthias Beller, Stefan Klaus, Alexander Zapf
  • Publication number: 20090036713
    Abstract: The present invention relates to a process for the hydrogenation of imines with hydrogen in the presence of iridium catalysts. In particular the present invention relates to a process for the hydrogenation of imines with hydrogen under elevated pressure in the presence of an iridium catalysts and with or without an inert solvent, wherein the reaction mixture comprises a phosphonium chloride, bromide or iodide in the presence or in the absence of an acid, which can be an organic or inorganic acid, soluble or insoluble in the reaction mixture. Suitable imines are especially those that contain at least one (Formula I) group. If the groups are substituted asymmetrically and are thus compounds having a prochiral ketimine group, it is possible in the process according to the invention for mixtures of optical isomers or pure optical isomers to be formed if enantioselective or diastereoselective iridium catalysts are used.
    Type: Application
    Filed: February 9, 2007
    Publication date: February 5, 2009
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Juan Almena, Thomas Riermeier, Axel Monsees, Renat Kadyrov
  • Publication number: 20080306264
    Abstract: The present invention concerns novel bidentante optionally N-containing P-ligands of general Formula (I) embracing a two-ring-system and processes for synthesizing them, transition metal complexes of these compounds and their use as catalysts.
    Type: Application
    Filed: April 14, 2005
    Publication date: December 11, 2008
    Applicant: Degussa AG
    Inventors: Renat Kadyrov, Juan Jose Almena Perea, Axel Monsees, Thomas Riermeier, Ilias Z. Ilaldinov
  • Publication number: 20080287713
    Abstract: The present invention is directed to a process for preparing compounds of the general formula (I). Compounds of the general formula (I) are advantageous precursors for preparing phospholane catalysts, especially bisphospholane catalysts. The invention therefore likewise provides for the use of the substances in question for preparing these catalysts.
    Type: Application
    Filed: October 4, 2006
    Publication date: November 20, 2008
    Inventors: Armin Borner, Jens Holz, Juan Almena, Renat Kadyrov, Axel Monsees, Thomas Riermeier
  • Publication number: 20080200695
    Abstract: The present invention is based on new ligand systems of the general formula (I). These ligand systems can be used advantageously in transition metal-catalysed asymmetric syntheses. Likewise encompassed are the transition metal complexes thus prepared, a process for preparing the ligands and the use of the complexes in asymmetric synthesis.
    Type: Application
    Filed: March 2, 2006
    Publication date: August 21, 2008
    Applicant: DEGUSSA GmbH
    Inventors: Jens Holz, Armin Boerner, Odalys Esperanza Zayas Vargas, Juan Jose Almena Perea, Axel Monsees, Renat Kadyrov, Thomas Riermeier
  • Publication number: 20080188691
    Abstract: The present invention is aimed at a process for the preparation of (hetero)aromatic aldehydes. The aldehydes are obtained from corresponding Hal?-substituted (hetero)aromatics by palladium-catalysed reductive carbonylation in the presence of a specific monodentate phosphane-based ligand system.
    Type: Application
    Filed: March 2, 2006
    Publication date: August 7, 2008
    Applicant: DEGUSSA GmbH
    Inventors: Juan Jose Almena Perea, Axel Monsees, Renat Kadyrov, Thomas Riermeier, Kai Rossen, Wolf-Rudiger Krahnert, Matthias Beller, Stefan Klaus, Alexander Zapf
  • Patent number: 7361786
    Abstract: The present invention relates to ligands of the general formula (I). In addition, a process for the production thereof and the use thereof are demonstrated.
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: April 22, 2008
    Assignee: Degussa AG
    Inventors: Armin Boerner, Jens Holz, Axel Monsees, Thomas Riermeier, Renat Kadyrov, Carsten A. Schneider, Uwe Dingerdissen, Karlheinz Drauz