Patents by Inventor Andreas Merkel

Andreas Merkel 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).

  • Publication number: 20180155856
    Abstract: The invention relates to a single-ply textile support and reinforcing material (20) for articles made of rubber and/or plastic, in particular for hoses and composite materials, which is formed by means of spun yarns with very low yarn rotation (spin alpha 0-10) or completely without yarn rotation preferably for knitted fabrics. The invention also relates to articles made of rubber and/or plastic, in particular hoses and composite materials, which contain the textile support and reinforcing material.
    Type: Application
    Filed: May 30, 2016
    Publication date: June 7, 2018
    Inventor: Andreas MERKEL
  • Patent number: 9868699
    Abstract: Cations are removed from a substance stream that is produced during the production of isophoronenitrile with the help of a cation exchanger.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: January 16, 2018
    Assignee: Evonik Degussa GmbH
    Inventors: Joerg-Joachim Nitz, Stephan Kohlstruk, Robert Jansen, Andreas Merkel, Anja Mueller, Jan Cassens, Axel Hengstermann
  • Publication number: 20160272580
    Abstract: Cations are removed from a substance stream that is produced during the production of isophoronenitrile with the help of a cation exchanger.
    Type: Application
    Filed: March 21, 2016
    Publication date: September 22, 2016
    Applicant: Evonik Degussa GmbH
    Inventors: Joerg-Joachim NITZ, Stephan KOHLSTRUK, Robert JANSEN, Andreas MERKEL, Anja MUELLER, Jan CASSENS, Axel HENGSTERMANN
  • Patent number: 9187412
    Abstract: The present invention refers to the preparation of 3-cyano-3,5,5-trimethylcyclohexanone (isophorone nitrile, abbreviation IPN) using a calcium alkoxide, particularly calcium ethoxide, as catalyst.
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: November 17, 2015
    Assignee: Evonik Degussa GmbH
    Inventors: Markus Schwarz, Andreas Merkel, Joerg-Joachim Nitz, Gerda Grund
  • Patent number: 9035102
    Abstract: A process for preparing isophorone (3,5,5-trimethyl-2-cyclohexen-1-one) is provided wherein distillation vapors from the work-up of product fractions are recycled to earlier stages of operation of the process.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: May 19, 2015
    Assignee: Evonik Industries AG
    Inventors: Joerg-Joachim Nitz, Stephan Kohlstruk, Robert Jansen, Matthias Orschel, Andreas Merkel, Michael Demming, Matthias Mendorf, Jens Doering, Axel Hengstermann, Andreas Hoff, Anja Mueller
  • Publication number: 20150045585
    Abstract: A process for preparing isophorone (3,5,5-trimethyl-2-cyclohexen-1-one) is provided wherein distillation vapors from the work-up of product fractions are recycled to earlier stages of operation of the process.
    Type: Application
    Filed: August 8, 2014
    Publication date: February 12, 2015
    Applicant: Evonik Industries AG
    Inventors: Joerg-Joachim NITZ, Stephan KOHLSTRUK, Robert JANSEN, Matthias ORSCHEL, Andreas MERKEL, Michael DEMMING, Matthias MENDORF, Jens DOERING, Axel HENGSTERMANN, Andreas HOFF, Anja MUELLER
  • Publication number: 20140114085
    Abstract: The present invention refers to the preparation of 3-cyano-3,5,5-trimethylcyclohexanone (isophorone nitrile, abbreviation IPN) using a calcium alkoxide, particularly calcium ethoxide, as catalyst.
    Type: Application
    Filed: June 5, 2012
    Publication date: April 24, 2014
    Applicant: Evonik Degussa GmbH
    Inventors: Markus Schwarz, Andreas Merkel, Joerg-Joachim Nitz, Gerda Grund
  • Patent number: 7918965
    Abstract: Process for the production of paper, board and cardboard by draining a paper stock with sheet formation in the presence of a retention aid system comprising (i) at least one polymer comprising vinylamine units, in the form of the free bases, of the salts and/or in quaternized form, as the sole cationic polymer, (ii) at least one linear, anionic polymer having a molar mass Mw of at least 1 million and/or at least one branched, anionic, water-soluble polymer and/or bentonite and/or silica gel and (iii) at least one particulate, anionic, crosslinked, organic polymer having a mean particle diameter of at least 1 ?m and an intrinsic viscosity of less than 3 dl/g, and use of the retention aid system comprising the components (i), (ii) and (iii) as an additive in the production of paper, board and cardboard.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: April 5, 2011
    Assignee: BASF Aktiengesellschaft
    Inventors: Marc Leduc, Oliver Koch, Simon Champ, Rainer Blum, Andreas Merkel, Knut Menke
  • Publication number: 20080196852
    Abstract: Process for the production of paper, board and cardboard by draining a paper stock with sheet formation in the presence of a retention aid system comprising (i) at least one polymer comprising vinylamine units, in the form of the free bases, of the salts and/or in quaternized form, as the sole cationic polymer, (ii) at least one linear, anionic polymer having a molar mass Mw of at least 1 million and/or at least one branched, anionic, water-soluble polymer and/or bentonite and/or silica gel and (iii) at least one particulate, anionic, crosslinked, organic polymer having a mean particle diameter of at least 1 ?m and an intrinsic viscosity of less than 3 dl/g, and use of the retention aid system comprising the components (i), (ii) and (iii) as an additive in the production of paper, board and cardboard.
    Type: Application
    Filed: September 5, 2006
    Publication date: August 21, 2008
    Applicant: BASF SE
    Inventors: Marc Leduc, Oliver Koch, Simon Champ, Rainer Blum, Andreas Merkel, Knut Menke