Patents by Inventor Manfred Kircher

Manfred Kircher 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 fermentative production of L-amino acids from .alpha.-keto acids
    Patent number: 5200326
    Abstract: The invention is directed to a method of producing L-amino acids from .alpha.-ketocarboxylic acids by means of continuous fermentation with the aid of glutamate producing bacteria with biomass retention in which the cells are separated by microfiltration and/or centrifugal separators.
    Type: Grant
    Filed: May 1, 1987
    Date of Patent: April 6, 1993
    Assignee: Degussa AG
    Inventors: Christian Wandrey, Rolf Wichmann, Ulrich Groeger, Manfred Kircher, Wolfgang Leuchtenberger, Eberhard Breuker
  • Method for the fermentative production of L-isoleucine from D,L-.alpha.-hydroxybutyrate
    Patent number: 5118619
    Abstract: A method for the fermentative production of L-isoleucine from D,L-.alpha.-hydroxybutyrate by means of mutants of the genus Corynbecaterium which utilize D-lactate.
    Type: Grant
    Filed: June 8, 1987
    Date of Patent: June 2, 1992
    Assignee: Degussa Aktiengesellschaft
    Inventors: Elisabeth Scheer, Hermann Sahm, Lothar Eggeling, Manfred Kircher, Wolfgang Leuchtenberger