Patents by Inventor Birgit Geueke

Birgit Geueke 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).

  • Method for the preparation of L-amino acids from D-amino acids
    Patent number: 7217544
    Abstract: The invention relates to recombinant microorganisms which, in comparison to the starting organism, have a higher concentration or activity of a D-amino acid oxidase, of an L-amino acid dehydrogenase, of an NADH cosubstrate regenerating enzyme and, if necessary, of a catalase. The invention also includes methods for preparing L-amino acids from D-amino acids using of these microorganisms.
    Type: Grant
    Filed: February 14, 2005
    Date of Patent: May 15, 2007
    Assignee: Degussa AG
    Inventors: Werner Hummel, Birgit Geueke, Steffen Osswald, Christoph Weckbecker, Klaus Huthmacher
  • Cloning and expression of D-amino acid oxidase from
    Patent number: 7195900
    Abstract: The present invention is directed to a nucleotide sequence encoding D-amino oxidase (D-AAO, EC 1.4.3.3) from Arthrobacter protophormiae. This may be inserted into an expression and used to transform a microbial host. The transformed microbial hosts ecomically produce D-AAO which may be used to oxidize D-amino acids.
    Type: Grant
    Filed: June 18, 2003
    Date of Patent: March 27, 2007
    Assignee: Degussa AG
    Inventors: Werner Hummel, Birgit Geueke, Andrea Weckbecker, Klaus Huthmacher, Christoph Weckbecker
  • Method for the preparation of L-amino acids from D-amino acids
    Publication number: 20060063238
    Abstract: The invention relates to recombinant microorganisms which, in comparison to the starting organism, have a higher concentration or activity of a D-amino acid oxidase, of an L-amino acid dehydrogenase, of an NADH cosubstrate regenerating enzyme and, if necessary, of a catalase. The invention also includes methods for preparing L-amino acids from D-amino acids using of these microorganisms.
    Type: Application
    Filed: February 14, 2005
    Publication date: March 23, 2006
    Inventors: Werner Hummel, Birgit Geueke, Steffen Osswald, Christoph Weckbecker, Klaus Huthmacher
  • Cloning and expression of D-amino acid oxidase from arthrobacter protophormiae
    Publication number: 20040009561
    Abstract: The present invention is directed to a nucleotide sequence encoding D-amino oxidase (D-AAO, EC 1.4.3.3) from Arthrobacter protophormiae. This may be inserted into an expression and used to transform a microbial host. The transformed microbial hosts ecomically produce D-AAO which may be used to oxidize D-amino acids.
    Type: Application
    Filed: June 18, 2003
    Publication date: January 15, 2004
    Applicant: Degussa AG
    Inventors: Werner Hummel, Birgit Geueke, Andrea Weckbecker, Klaus Huthmacher, Christoph Weckbecker
  • L-amino acid oxidase from Rhodococcus species
    Patent number: 6461841
    Abstract: L-amino acid oxidases (L-AAO) from Rhodococcus species and nucleic acids, vectors and microorganisms expressing such L-AAOs. L-AAOs may be used to selectively transform the L-portion of a racemic mixture of an amino acid into keto acid, and thus purify the corresponding D-amino acid.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: October 8, 2002
    Assignee: Degussa AG
    Inventors: Birgit Geueke, Werner Hummel, Andreas Bommarius
  • L-amino acid oxidase from Rhodococcus species
    Publication number: 20020106753
    Abstract: L-amino acid oxidases (L-AAO) from Rhodococcus species and nucleic acids, vectors and microorganisms expressing such L-AAOs. L-AAOs may be used to selectively transform the L-portion of a racemic mixture of an amino acid into keto acid, and thus purify the corresponding D-amino acid.
    Type: Application
    Filed: November 9, 2001
    Publication date: August 8, 2002
    Applicant: Degussa AG
    Inventors: Birgit Geueke, Werner Hummel, Andreas Bommarius