Patents by Inventor Kurt Weissenbock

Kurt Weissenbock 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).

  • Process for preparing calcium pyruvate and its hydrates
    Patent number: 5723661
    Abstract: A process for preparing high-purity calcium pyruvate or its hydrates by reacting an aqueous solution of pyruvic acid with an inorganic calcium compound with the pH being set to 2 to 7, preferably 2.5 to 4, which comprises reacting an up to 10% strength aqueous solution of pyruvic acid with the calcium compound, in the presence or absence of a stabilizer or complexing agent, and mixing the resulting solution with an organic diluent at temperatures of 0.degree. to 30.degree. C. and isolating the resulting precipitate of calcium pyruvate or its hydrate from the solution.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: March 3, 1998
    Assignee: DSM Chemie Linz GmbH
    Inventors: Curt Zimmermann, Kurt Weissenbock