Patents by Inventor Eric G. Berger

Eric G. Berger 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).

  • Chinese hamster ovary cells for producing proteins
    Publication number: 20020019031
    Abstract: In Chinese hamster ovary cells for producing proteins, the growth phase is uncoupled from the production phase. In a method for preparing the Chinese hamster ovary cells and with the use of the Chinese hamster ovary cells for preparing proteins, a seed culture of high cell density is prepared which cells are grown to confluence and genetic material is transferred into the cells after the formation of a confluent surface (G1 phase).
    Type: Application
    Filed: April 13, 2001
    Publication date: February 14, 2002
    Inventors: Detlef Eisenkratzer, Andre Dinter, Andre Kiesewetter, Steffen Zeng, Manfred Biselli, Eric G. Berger
  • Proteins having glycosyltransferase activity
    Patent number: 5641668
    Abstract: The invention concerns proteins having glycosyltransferase activity, recombinant DNA molecules encoding proteins having glycosyltransferase activity, hybrid vectors comprising such recombinant DNA molecules, transformed hosts suitable for the multiplication and/or expression of the recombinant DNA molecules, and processes for the preparation of the proteins, DNA molecules and hosts.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: June 24, 1997
    Assignee: CIBA-GEIGY Corporation
    Inventors: Eric G. Berger, Manfred Watzele, Svetoslav X. Iwanow