Patents by Inventor Harald Summer

Harald Summer 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: 20030022882
    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: September 20, 2002
    Publication date: January 30, 2003
    Inventors: Franz Krenmuller, Harald Summer
  • Process for the production of clavulanic acid salts
    Publication number: 20020072513
    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: February 8, 2002
    Publication date: June 13, 2002
    Inventors: Franz Krenmuller, 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
  • Purification of fermented clavulanic acid
    Publication number: 20010029038
    Abstract: A process for the production of clavulanic acid and pharmaceutically acceptable salts thereof by
    Type: Application
    Filed: May 31, 2001
    Publication date: October 11, 2001
    Inventors: Harald Summer, Alois Renzl, Helmut Wagner
  • Separation of cephalosporin isomers
    Publication number: 20010016581
    Abstract: Process of depleting 7-amino-3-[(E)-2-(4-methyl-5-thiazolyl)vinyl]-3-cephem-4-carboxylic acid in Z/E mixtures of 7-amino-3-[2-(4-methyl-5-thiazolyl)vinyl]-3-cephem-4-carboxylic acid
    Type: Application
    Filed: January 23, 2001
    Publication date: August 23, 2001
    Inventors: Johannes Ludescher, Harald Summer, Siegfried Wolf
  • Separation of cephalosporin isomers
    Patent number: 6235897
    Abstract: Process of depleting 7-amino-3-[(E)-2-(4-methyl-5-thiazolyl)vinyl]-3-cephem-4-carboxylic acid in Z/E mixtures of 7-amino-3-[2-(4-methyl-5-thiazolyl)vinyl]-3-cephem-4-carboxylic acid a) by subjecting an amine salt of a Z/E mixture of 7-amino-3-[2-(4-methyl-5-thiazolyl)vinyl]-3-cephem-4-carboxylic acid to crystallization and converting this amine salt into 7-amino-3-[2-(4-methyl-5-thiazolyl)vinyl]-3-cephem-4-carboxylic acid, or b) by subjecting the Z/E mixture to chromatography.
    Type: Grant
    Filed: March 25, 1997
    Date of Patent: May 22, 2001
    Assignee: Biochemie Gesellschaft m.b.H.
    Inventors: Johannes Ludescher, Harald Summer, Siegfried Wolf
  • Separation of cephalosporin isomers
    Patent number: 5616703
    Abstract: Process of depleting 7-amino-3-[(E)-2-(4-methyl-5-thiazolyl)vinyl]-3-cephem-4-carboxylic acid in Z/E mixtures of 7-amino-3-[2-(4-methyl-5-thiazolyl)vinyl]-3-cephem-4-carboxylic acida) by subjecting an amine salt of a Z/E mixture of 7-amino-3-[2-(4-methyl-5-thiazolyl)vinyl]-3-cephen-4-carboxylic acid to crystallization and converting this amine salt into 7-amino-3-[2-(4-methyl-5-thiazolyl)vinyl]-3-cephem-4-carboxylic acid, orb) by subjecting the Z/E mixture to chromatography.
    Type: Grant
    Filed: November 16, 1994
    Date of Patent: April 1, 1997
    Assignee: Biochemie Gesellschaft m.b.H.
    Inventors: Johannes Ludescher, Harald Summer, Siegfried Wolf
  • 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