Patents by Inventor Walter Pfeffere

Walter Pfeffere 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).

  • L-lysine-producing corynebacteria and process for the preparation of l-lysine
    Patent number: 6200785
    Abstract: The invention relates to L-lysine-producing strains of corynebacteria with amplified lysE gene (lysine export carrier gene), in which strains additional genes chosen from the group comprising the dapA gene (dihydrodipicolinate synthase gene), the lysC gene (aspartate kinase gene), the dapB gene (dihydrodipicolinate reductase gene) and the pyc gene, but especially the dapA gene and the lysC gene (aspartate kinase gene), are amplified and, in particular, overexpressed, and to a process for the preparation of L-lysine.
    Type: Grant
    Filed: July 14, 1999
    Date of Patent: March 13, 2001
    Assignee: Degussa-Huls Aktiengesellschaft
    Inventors: Caroline Kreutzer, Stephan Hans, Mechthild Rieping, Bettina Mockel, Walter Pfeffere, Lothar Eggeling, Hermann Sahm, Miroslav Patek