Patents by Inventor Franz Krenmueller

Franz Krenmueller 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 the production of clavulanic acid salts
    Publication number: 20030203886
    Abstract: Use of the 2-amino-2,4,4-trimethylpentane salt of clavulanic acid as an intermediate in the production of pharmaceutically acceptable salts of clavulanic acid.
    Type: Application
    Filed: May 13, 2003
    Publication date: October 30, 2003
    Inventors: Franz Krenmueller, Harald Summer
  • Process for the production of clavulanic acid salts
    Publication number: 20010036940
    Abstract: Use of the 2-amino-2,4,4-trimethylpentane salt of clavulanic acid as an intermediate in the production of pharmaceutically acceptable salts of clavulanic acid.
    Type: Application
    Filed: June 26, 2001
    Publication date: November 1, 2001
    Inventors: Franz Krenmueller, Harald Summer
  • Process for the production of aminoanthraquinone
    Patent number: 3931253
    Abstract: The present invention concerns a novel process for the production of an aminoanthraquinone, which comprises catalytically hydrogenating the corresponding nitroanthraquinone in an organic solvent. Aminoanthraquinones are known and are useful as intermediates in the production of anthraquinone dyestuffs.
    Type: Grant
    Filed: August 6, 1973
    Date of Patent: January 6, 1976
    Assignee: Sandoz Ltd., (Sandoz AG)
    Inventors: Franz Krenmueller, Heinrich Till
  • Process for the production of clavulanic acid salts
    Patent number: H2158
    Abstract: Use of the 2-amino-2,4,4-trimethylpentane salt of clavulanic acid as an intermediate in the production of pharmaceutically acceptable salts of clavulanic acid.
    Type: Grant
    Filed: May 13, 2003
    Date of Patent: June 6, 2006
    Assignee: Sandoz AG
    Inventors: Franz Krenmüller, Harald Summer