Patents by Inventor Doris Ribitsch

Doris Ribitsch 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).

  • Patent number: 9481902
    Abstract: The present disclosure is directed to the use of certain glycosyltransferase variants having N-terminal truncation deletions. It was found that the combination of two different truncation variants of human ?-galactoside-?-2,6-sialyltransferase I (hST6Gal-I) exhibited different specific sialyltransferase enzymatic activities. In one example, under conditions wherein the first variant ?89 hST6Gal-I catalyzed formation of bi-sialylated target molecules the second variant ?108 hST6Gal-I catalyzed formation of mono-sialylated target molecules. Thus, disclosed are variants of mammalian glycosyltransferase, nucleic acids encoding the same, methods and means for recombinantly producing the variants of mammalian glycosyltransferase and use thereof, particularly for sialylating in a quantitatively controlled manner terminal acceptor groups of glycan moieties being part of glycoproteins such as immunoglobulins.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: November 1, 2016
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Tibor Czabany, Alfred Engel, Michael Greif, Christine Jung, Christiane Luley, Sebastian Malik, Rainer Mueller, Bernd Nidetzky, Doris Ribitsch, Katharina Schmoelzer, Helmut Schwab, Harald Sobek, Bernhard Suppmann, Marco Thomann, Sabine Zitzenbacher
  • Publication number: 20160102333
    Abstract: The present disclosure is directed to the use of certain glycosyltransferase variants having N-terminal truncation deletions. It was found that the combination of two different truncation variants of human ?-galactoside-?-2,6-sialyltransferase I (hST6Gal-I) exhibited different specific sialyltransferase enzymatic activities. In one example, under conditions wherein the first variant ?89 hST6Gal-I catalyzed formation of bi-sialylated target molecules the second variant ?108 hST6Gal-I catalyzed formation of mono-sialylated target molecules. Thus, disclosed are variants of mammalian glycosyltransferase, nucleic acids encoding the same, methods and means for recombinantly producing the variants of mammalian glycosyltransferase and use thereof, particularly for sialylating in a quantitatively controlled manner terminal acceptor groups of glycan moieties being part of glycoproteins such as immunoglobulins.
    Type: Application
    Filed: December 16, 2015
    Publication date: April 14, 2016
    Inventors: Tibor Czabany, Alfred Engel, Michael Greif, Christine Jung, Christiane Luley, Sebastian Malik, Rainer Mueller, Bernd Nidetzky, Doris Ribitsch, Katharina Schmoelzer, Helmut Schwab, Harald Sobek, Bernhard Suppmann, Marco Thomann, Sabine Zitzenbacher
  • Publication number: 20160102298
    Abstract: The present disclosure is directed to glycosyltransferase variants having N-terminal truncation deletions. Contrary to previous findings certain truncations comprising the conserved amino acid motif (“QVWxKDS”) were found to be compatible with glycosyltransferase enzymatic activity, particularly in a human sialyltransferase (hST6Gal-I). Thus, disclosed are variants of mammalian glycosyltransferase, nucleic acids encoding the same, methods and means for recombinantly producing the variants of mammalian glycosyltransferase and use thereof, particularly for sialylating terminal acceptor groups of glycan moieties being part of glycoproteins such as immunoglobulins.
    Type: Application
    Filed: December 16, 2015
    Publication date: April 14, 2016
    Inventors: Tibor Czabany, Alfred Engel, Michael Greif, Christine Jung, Christiane Luley, Sebastian Malik, Rainer Mueller, Bernd Nidetzky, Doris Ribitsch, Katharina Schmoelzer, Helmut Schwab, Harald Sobek, Bernhard Suppmann, Marco Thomann, Sabine Zitzenbacher
  • Publication number: 20100234267
    Abstract: The present invention relates to agent compositions, in particular washing and cleaning agents, that contain a protease from a bacterial strain of the species Stenotrophomonas maltophilia, and to said proteases themselves. The invention further relates to cleaning methods in which said agents are used, and to uses of said agents. The invention further relates to the manufacture and use of these proteases themselves.
    Type: Application
    Filed: January 11, 2010
    Publication date: September 16, 2010
    Applicant: HENKEL AG & CO. KGAA
    Inventors: Petra Siegert, Susanne Wieland, Karl-Heinz Maurer, Cornelius Bessler, Doris Ribitsch, Sonja Heumann, Georg Gübitz, Wolfgang Karl, Peter Remler, Helmut Schwab, Gabriele Berg, Jochen Gerlach