Patents by Inventor Hendrik Husken

Hendrik Husken 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).

  • Enzyme reactions in miniemulsions
    Patent number: 7939301
    Abstract: The present invention is directed towards an asymmetric enzymic process for preparing optically active organic compounds. The process according to the invention is carried out in what are termed miniemulsions. The invention also relates to an enzymic reaction mixture which exhibits a miniemulsion.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: May 10, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Harald Gröger, Karlheinz Drauz, Hendrik Hüsken, Katharina Landfester
  • Coupled cofactor-dependent enzymatic reaction systems in aqueous media
    Patent number: 7632665
    Abstract: The present application relates to a reaction system in which chemically valuable compounds can be obtained in high enantiomer concentrations with the aid of a coupled enzymatically operating transformation process. The coupled enzymatic reaction system comprises a cofactor-dependent enzymatic transformation of an organic compound and an enzymatic regeneration of the cofactor, wherein the reaction system operates in aqueous solution with an amount of substrate above the solubility limit thereof. In the preferred embodiments, an alcohol dehydrogenase is the cofactor-dependent enzyme, and the regeneration of the cofactor (e.g. NADH or NADPH) is acheved by means of formate dehydrogenase.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: December 15, 2009
    Assignee: Evonik Degussa GmbH
    Inventors: Harald Gröger, Claudia Rollmann, Hendrik Hüsken, Helge Werner, Francoise Chamouleau, Chad Hagedorn, Karlheinz Drauz, Werner Hummel
  • Enzyme reactions in miniemulsions
    Publication number: 20080020423
    Abstract: The present invention is directed towards an asymmetric enzymic process for preparing optically active organic compounds. The process according to the invention is carried out in what are termed miniemulsions. The invention also relates to an enzymic reaction mixture which exhibits a miniemulsion.
    Type: Application
    Filed: May 25, 2007
    Publication date: January 24, 2008
    Applicant: Degussa GmbH
    Inventors: Harald Groger, Karlheinz Drauz, Hendrik Husken, Katharina Landfester
  • Coupled cofactor-dependent enzymatic reaction systems in aqueous media
    Publication number: 20060216801
    Abstract: The present application relates to a reaction system in which chemically valuable compounds can be obtained in high enantiomer concentrations with the aid of a coupled enzymatically operating transformation process. The coupled enzymatic reaction system comprises a cofactor-dependent enzymatic transformation of an organic compound and an enzymatic regeneration of the cofactor, wherein the reaction system operates in aqueous solution with an amount of substrate above the solubility limit thereof. In the preferred embodiments, an alcohol dehydrogenase is the cofactor-dependent enzyme, and the regeneration of the cofactor (e.g. NADH or NADPH) is acheved by means of formate dehydrogenase.
    Type: Application
    Filed: March 17, 2004
    Publication date: September 28, 2006
    Applicant: Degussa AG
    Inventors: Harald Groger, Claudia Rollmann, Hendrik Husken, Helge Werner, Francoise Chamouleau, Chad Hagedorn, Karlheinz Drauz, Werner Hummel