Patents by Inventor Josef Guth

Josef Guth 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).

  • Publication number: 20020062050
    Abstract: Alkali metal alkoxides are prepared by reacting alkali metal amalgam with alcohol in the presence of a catalyst comprising iron having a carbon content of at least 0.3% by weight.
    Type: Application
    Filed: September 28, 2001
    Publication date: May 23, 2002
    Inventors: Kerstin Schierle-Arndt, Hans-Josef Sterzel, Dieter Schlafer, Josef Guth, Holger Friedrich, Peter Zehner
  • Patent number: 6368487
    Abstract: An electrolytic cell comprises an agitated, alkali metal amalgam-containing anode, an alkali metal ion-conducting solid electrolyte and a cathode, wherein the solid electrolyte and the cathode are separated from one another by a liquid electrolyte.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: April 9, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Günther Huber, Hermann Pütter, Kerstin Schierle-Arndt, Dieter Schläfer, Josef Guth
  • Patent number: 6287448
    Abstract: A process for producing metallic lithium starting from an aqueous solution of at least one lithium salt comprises the following steps: (I) Production of a lithium amalgam from an aqueous solution of at least one lithium salt; and (II) Electrolysis using an anode comprising the lithium amalgam, a solid electrolyte which conducts lithium ions, and liquid lithium as cathode, wherein the lithium amalgam as anode is kept in motion.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: September 11, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Kerstin Schierle-Arndt, Hermann Pütter, Günther Huber, Dieter Schläfer, Josef Guth
  • Patent number: 6281392
    Abstract: Orthoesters are prepared by reacting 1,1,1-trihaloalkanes with alkali metal alkoxides in the presence of the corresponding alcohol, a slurry of the alkali metal alkoxide in the corresponding alcohol being used.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: August 28, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Kirsten Burkart, Josef Guth, Thomas Letzelter, Jürgen Schweinzer, Hans-Josef Sterzel
  • Patent number: 4889950
    Abstract: Carboxylic esters are prepared by reacting carboxylic acids with low-boiling alcohols by charging the reaction mixture to a 1st distillation column, withdrawing the reaction components carboxylic ester, water and unconverted alcohol as overhead product and charging this overhead product to a 2nd distillation column, from which(a) the overhead product comprises the alcohol or an azeotropic mixture of alcohol and water or alcohol and esteer, this overhead product being recycled into the esterification reaction(b) a liquid side product comprising carboxylic ester and water is withdrawn from the stripping section and separated in a phase separating vessel into water and carboxylic ester and the carboxylic ester is returned into the distillation column below the side takeoff point, and(c) the bottom product removed is the carboxylic ester.
    Type: Grant
    Filed: August 24, 1988
    Date of Patent: December 26, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Kaspar Bott, Horst Hartmann, Josef Guth