Patents by Inventor Thomas Riethmann

Thomas Riethmann 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).

  • COabsorption from gas mixtures using an aqueous solution of 4-amino-2,2,6,6-tetramethyl piperidine
    Patent number: 8623123
    Abstract: CO2 is absorbed from a gas mixture by bringing the gas mixture into contact with an absorbent that comprises water and at least one amine of the formula (I), wherein R1 and R2, independently of each other, are hydrogen or an alkyl group. According to the invention, absorption media comprise sulfolane or an ionic liquid in addition to water and an amine of the formula (I). A device according to the invention for removing CO2 from a gas mixture comprises an absorption unit, a desorption unit, and an absorption medium according to the invention that is conducted in the circuit.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: January 7, 2014
    Assignee: Evonik Degussa GmbH
    Inventors: Matthias Seiler, Jöm Rolker, Rolf Schneider, Bernd Glöckler, Axel Kobus, Wolfgang Benesch, Thomas Riethmann, Hermann Winkler, Jens Reich, Helmut Brüggemann
  • CO2 ABSORPTION FROM GAS MIXTURES USING AN AQUEOUS SOLUTION OF 4-AMINO-2,2,6,6-TETRAMETHYLPIPERIDINE
    Publication number: 20130263743
    Abstract: CO2 is absorbed from a gas mixture by bringing the gas mixture into contact with an absorbent that comprises water and at least one amine of the formula(I), wherein R1 and R2, independently of each other, are hydrogen or an alkyl group. According to the invention, absorption media comprise sulfolane or an ionic liquid in addition to water and an amine of the formula (I). A device according to the invention for removing CO2 from a gas mixture comprises an absorption unit, a desorption unit, and an absorption medium according to the invention that is conducted in the circuit.
    Type: Application
    Filed: June 4, 2013
    Publication date: October 10, 2013
    Inventors: Matthias Seiler, Jöm Rolker, Rolf Schneider, Bernd Glöckler, Axel Kobus, Wolfgang Benesch, Thomas Riethmann, Hermann Winkler, Jens Reich, Helmut Brüggemann
  • COabsorption from gas mixtures using an aqueous solution of 4-amino-2,2,6,6-tetramethylpiperidine
    Patent number: 8500892
    Abstract: CO2 is absorbed from a gas mixture by bringing the gas mixture into contact with an absorbent that comprises water and at least one amine of the formula (I), wherein R1 and R2, independently of each other, are hydrogen or an alkyl group. According to the invention, absorption media comprise sulfolane or an ionic liquid in addition to water and an amine of the formula (I). A device according to the invention for removing CO2 from a gas mixture comprises an absorption unit, a desorption unit, and an absorption medium according to the invention that is conducted in the circuit.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: August 6, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Matthias Seiler, Jörn Rolker, Rolf Schneider, Bernd Glöckler, Axel Kobus, Wolfgang Benesch, Thomas Riethmann, Hermann Winkler, Jens Reich, Helmut Brüggemann
  • COabsorption from gas mixtures using an aqueous solution of 4-amino-2,2,6,6-tetramethylpiperidine
    Patent number: 8500867
    Abstract: CO2 is absorbed from a gas mixture by bringing the gas mixture into contact with an absorbent that comprises water and at least one amine of the formula (I), wherein R1 and R2, independently of each other, are hydrogen or an alkyl group. According to the invention, absorption media comprise sulfolane or an ionic liquid in addition to water and an amine of the formula (1). A device according to the invention for removing CO2 from a gas mixture comprises an absorption unit, a desorption unit, and an absorption medium according to the invention that is conducted in the circuit.
    Type: Grant
    Filed: August 19, 2012
    Date of Patent: August 6, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Matthias Seiler, Jörn Rolker, Rolf Schneider, Bernd Glöckler, Axel Kobus, Wolfgang Benesch, Thomas Riethmann, Hermann Winkler, Jens Reich, Helmut Brüggemann
  • CO2 ABSORPTION FROM GAS MIXTURES USING AN AQUEOUS SOLUTION OF 4-AMINO-2,2,6,6-TETRAMETHYLPIPERIDINE
    Publication number: 20120308458
    Abstract: CO2 is absorbed from a gas mixture by bringing the gas mixture into contact with an absorbent that comprises water and at least one amine of the formula (I), wherein R1 and R2, independently of each other, are hydrogen or an alkyl group. According to the invention, absorption media comprise sulfolane or an ionic liquid in addition to water and an amine of the formula (1). A device according to the invention for removing CO2 from a gas mixture comprises an absorption unit, a desorption unit, and an absorption medium according to the invention that is conducted in the circuit.
    Type: Application
    Filed: August 19, 2012
    Publication date: December 6, 2012
    Applicant: Evonik Degussa GmbH
    Inventors: Matthias Seiler, Jörn Rolker, Rolf Schneider, Bernd Glöckler, Axel Kobus, Wolfgang Benesch, Thomas Riethmann, Hermann Winkler, Jens Reich, Helmut Brüggemann
  • PROCESS, ABSORPTION MEDIUM, AND APPARATUS FOR ABSORPTION OF CO2 FROM GAS MIXTURES
    Publication number: 20120080644
    Abstract: CO2 is absorbed from a gas mixture by contacting the gas mixture with an absorption medium which comprises water and 2,3-dihydro-2,2,4,6-tetramethylpyridine. The absorption media of the invention include water, 2,3-dihydro-2,2,4,6-tetramethylpyridine, and at least one organic solvent in a homogeneous phase. An apparatus of the invention for removing CO2 from a gas mixture comprises an absorption unit, a desorption unit, and a circulating absorption medium of the invention.
    Type: Application
    Filed: May 28, 2010
    Publication date: April 5, 2012
    Applicant: Evonik Degussa GmbH
    Inventors: Matthias Seiler, Jörn Rolker, Rolf Schneider, Axel Kobus, Daniel Witthaut, Manfred Neumann, Michael Keup, Daniel Dembkowski, Wolfgang Benesch, Hermann Winkler, Jens Reich, Thomas Riethmann
  • CO2 ABSORPTION FROM GAS MIXTURES USING AN AQUEOUS SOLUTION OF 4-AMINO-2,2,6,6-TETRAMETHYLPIPERIDINE
    Publication number: 20120017762
    Abstract: CO2 is absorbed from a gas mixture by bringing the gas mixture into contact with an absorbent that comprises water and at least one amine of the formula (I), wherein R1 and R2, independently of each other, are hydrogen or an alkyl group. According to the invention, absorption media comprise sulfolane or an ionic liquid in addition to water and an amine of the formula (I). A device according to the invention for removing CO2 from a gas mixture comprises an absorption unit, a desorption unit, and an absorption medium according to the invention that is conducted in the circuit.
    Type: Application
    Filed: January 29, 2010
    Publication date: January 26, 2012
    Applicant: Evonik Degussa GmbH
    Inventors: Matthias Seiler, Jörn Rolker, Rolf Schneider, Bernd Glöckler, Axel Kobus, Wolfgang Benesch, Thomas Riethmann, Hermann Winkler, Jens Reich, Helmut Brüggemann