Patents by Inventor Sabine Hafkemeyer

Sabine Hafkemeyer 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).

  • Biological alkane oxidation
    Patent number: 10053713
    Abstract: The invention relates to a method for oxidizing an alkane, comprising contacting the alkane with a type alkB oxidoreductase and using a type alkB oxidoreductase to prepare a mixture of oxidation products of an alkane, wherein the ratio of carboxylic acid to alcohol in the oxidation products is preferably greater than 1:1.
    Type: Grant
    Filed: November 22, 2012
    Date of Patent: August 21, 2018
    Assignee: EVONIK DEGUSSA GmbH
    Inventors: Jan Christoph Pfeffer, Thomas Haas, Oliver Thum, Frank Erhardt, Eva Maria Wittmann, Christian Gehring, Sabine Hafkemeyer, Thomas Hueller
  • Process for the improved separation of a hydrophobic organic solution from an aqueous culture medium
    Patent number: 9249435
    Abstract: A process for the improved separation of a hydrophobic organic solution from an aqueous culture medium is provided. The process includes preparing an aqueous culture medium of a metabolically active cell having a decreased activity; contacting of the aqueous culture medium with a hydrophobic organic solution comprising a substrate for biotransformation; conducting a biotransformation of the substrate; and separating the hydrophobic organic solution comprising a biotransformed substrate from the aqueous culture medium. The decreased activity of the metabolically active cell is in comparison to a wild-type of the active cell and the decreased activity is of at least of one enzyme that catalyzes one reaction of ?-oxidation of fatty acids.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: February 2, 2016
    Assignee: EVONIK DEGUSSA GmbH
    Inventors: Jasmin Gielen, Thomas Haas, Hans-Georg Hennemann, Steffen Schaffer, Mirja Wessel, Katharina Berse, Marion Schiebelhut, Sabine Hafkemeyer, Markus Poetter, Frank Erhardt
  • BIOLOGICAL ALKANE OXIDATION
    Publication number: 20150044744
    Abstract: The invention relates to a method for oxidizing an alkane, comprising contacting the alkane with a type alkB oxidoreductase and using a type alkB oxidoreductase to prepare a mixture of oxidation products of an alkane, wherein the ratio of carboxylic acid to alcohol in the oxidation products is preferably greater than 1:1.
    Type: Application
    Filed: November 22, 2012
    Publication date: February 12, 2015
    Applicant: EVONIK INDUSTRIES AG
    Inventors: Jan Christoph Pfeffer, Thomas Haas, Oliver Thum, Frank Erhardt, Eva Maria Wittmann, Christian Gehring, Sabine Hafkemeyer, Thomas Hueller
  • PROCESS FOR THE IMPROVED SEPARATION OF A HYDROPHOBIC ORGANIC SOLUTION FROM AN AQUEOUS CULTURE MEDIUM
    Publication number: 20130164797
    Abstract: A process for the improved separation of a hydrophobic organic solution from an aqueous culture medium is provided. The process includes preparing an aqueous culture medium of a metabolically active cell having a decreased activity; contacting of the aqueous culture medium with a hydrophobic organic solution comprising a substrate for biotransformation; conducting a biotransformation of the substrate; and separating the hydrophobic organic solution comprising a biotransformed substrate from the aqueous culture medium. The decreased activity of the metabolically active cell is in comparison to a wild-type of the active cell and the decreased activity is of at least of one enzyme that catalyses one reaction of ?-oxidation of fatty acids.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 27, 2013
    Inventors: Jasmin GIELEN, Thomas Haas, Hans-Georg Hennemann, Steffen Schaffer, Mirja Wessel, Katharina Berse, Marion Schiebelhut, Sabine Hafkemeyer, Markus Poetter, Frank Erhardt