Patents by Inventor Astrid Zervosen

Astrid Zervosen 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 enzymatic galactosylation of monosaccharides and oligosaccharides
    Patent number: 5962275
    Abstract: The invention relates to an improved process for enzymically galactosylating monosaccharides and oligosaccharides, with in-situ regeneration of the nucleotide sugar (or of the nucleoside diphosphate sugar), in the presence of sucrose synthase, .beta.-1-4-galactosyl transferase and uridine diphosphate-glucose 4'-epimerase, (UDP-glucose 4'-epimerase), in which process the uridine diphosphate-glucose 4'-epimerase is reactivated with a ketosugar derivative.
    Type: Grant
    Filed: February 13, 1998
    Date of Patent: October 5, 1999
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Brigitte Horsch, Andreas Seiffert-Storiko, Rudiger Marquardt, Astrid Zervosen, Lothar Elling, Maria Regina Kula
  • Process for the synthesis of nucleotide-6-deoxy-D-xylo-4-hexuloses
    Patent number: 5866378
    Abstract: The present invention relates to processes for the enzymatic synthesis of nucleotide-6-deoxy-D-xylo-4-hexuloses starting from a nucleoside monophosphate (NMP). These processes comprise simultaneous incubation of the following substances in a buffer solution:(a) substrates comprising a nucleoside monophosphate, phosphoenolpyruvate, adenosine triphosphate, and sucrose; and(b) enzymes comprising pyruvate kinase, nucleoside-monophosphate kinase, sucrose synthase and deoxythymidine-D-glucose 4,6dehydratase.
    Type: Grant
    Filed: October 7, 1996
    Date of Patent: February 2, 1999
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Ruediger Marquardt, Brigitte Hoersch, Andreas Seiffert-Stoeriko, Andreas Stein, Astrid Zervosen, Lothar Elling, Maria Regina Kula, Stefan Verseck, Juergen Distler, Wolfgang Piepersberg