Patents by Inventor Peter Duerre

Peter Duerre 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).

  • Cells and method for producing acetone
    Patent number: 9453210
    Abstract: The invention relates to cells and a method for producing acetone.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: September 27, 2016
    Assignee: Evonik Degussa GmbH
    Inventors: Franz Ulrich Becker, Gerda Grund, Matthias Orschel, Kai Doderer, Gerd Loehden, Gerd Brand, Peter Duerre, Simone Thum, Hubert Johannes Bahl, Ralf-Joerg Fischer, Antje May
  • Fermentative production of acetone from renewable resources by means of novel metabolic pathway
    Patent number: 8986961
    Abstract: The invention describes a process for preparing acetone starting from acetyl-coenzyme A comprising process steps A. enzymatic conversion of acetyl-CoA into acetoacetyl-CoA B. enzymatic conversion of acetoacetyl-CoA into acetoacetate and CoA and C. decarboxylation of acetoacetate to acetone and CO2, which is characterized in that the coenzyme A is not transferred in process step B to an acceptor molecule. In addition, process step B is surprisingly catalyzed by enzymes of the classes of acyl-CoA thioesterase, acyl-CoA synthetase or acyl-CoA thiokinase. A completely novel metabolic pathway is concerned, because the enzymatic hydrolysis of acetoacetyl-CoA without simultaneous transfer of CoA to a receptor molecule has never previously been described for any microbial enzyme.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: March 24, 2015
    Assignee: Evonik Degussa GmbH
    Inventors: Stefan Verseck, Steffen Schaffer, Werner Freitag, Friedrich-Georg Schmidt, Matthias Orschel, Gerda Grund, Wilfried Schmidt, Hubert Johannes Bahl, Ralf-Joerg Fischer, Antje May, Peter Duerre, Simone Lederle
  • Production of acid and solvent in microorganisms
    Patent number: 8679799
    Abstract: The invention relates to a method and means for the bioengineered fermentative production of solvents, in particular of butanol, acetone and ethanol, and of short-chained carboxylic acids such as acetic acid and butyric acid, in particular in host cells of the species Clostridium. The invention provides new methods and means for regulating the expression of the enzyme activities involved in acid production and or solvent production of the host cell.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: March 25, 2014
    Assignee: Sudzucker Aktiengesellschaft Mannheim/Ochsenfurt
    Inventors: Wolfgang Wach, Karsten Harms, Michael Klingeberg, Peter Duerre, Niklas Nold, Bettina Schiel
  • IMPROVED PRODUCTION OF ACID AND SOLVENT IN MICROORGANISMS
    Publication number: 20110281313
    Abstract: The invention relates to a method and means for the bioengineered fermentative production of solvents, in particular of butanol, acetone and ethanol, and of short-chained carboxylic acids such as acetic acid and butyric acid, in particular in host cells of the species Clostridium. The invention provides new methods and means for regulating the expression of the enzyme activities involved in acid production and or solvent production of the host cell.
    Type: Application
    Filed: December 15, 2009
    Publication date: November 17, 2011
    Applicant: Sudzucker Aktiengesell Schaft Mannheim/Ochsenfurt
    Inventors: Wolfgang Wach, Karsten Harms, Michael Klingeberg, Peter Duerre, Niklas Nold, Bettina Schiel
  • FERMENTATIVE PRODUCTION OF ACETONE FROM RENEWABLE RESOURCES BY MEANS OF NOVEL METABOLIC PATHWAY
    Publication number: 20100261237
    Abstract: The invention describes a process for preparing acetone starting from acetyl-coenzyme A comprising process steps A. enzymatic conversion of acetyl-CoA into acetoacetyl-CoA B. enzymatic conversion of acetoacetyl-CoA into acetoacetate and CoA and C. decarboxylation of acetoacetate to acetone and CO2, which is characterized in that the coenzyme A is not transferred in process step B to an acceptor molecule. In addition, process step B is surprisingly catalysed by enzymes of the classes of acyl-CoA thioesterase, acyl-CoA synthetase or acyl-CoA thiokinase. A completely novel metabolic pathway is concerned, because the enzymatic hydrolysis of acetoacetyl-CoA without simultaneous transfer of CoA to a receptor molecule has never previously been described for any microbial enzyme.
    Type: Application
    Filed: October 1, 2008
    Publication date: October 14, 2010
    Applicant: EVONIK DEGUSSA Gmbh
    Inventors: Stefan Verseck, Steffen Schaffer, Werner Freitag, Friedrich-Georg Schmidt, Matthias Orschel, Gerda Grund, Wilfried Schmidt, Hubert Johannes Bahl, Ralf-Joerg Fischer, Antje May, Peter Duerre, Simone Lederle