Patents by Inventor Klaus Beschmann

Klaus Beschmann 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 of purifying thiamine phosphates
    Patent number: 6596865
    Abstract: The invention relates to a method for removing phosphoric acid, thiamine triphosphate and higher thiamine phosphates from solutions that contain phosphoric acid, thiamine monophosphate, thiamine diphosphate, diamine triphosphate and higher phosphates. The inventive method is characterized by passing the phosphoric acid solution of thiamine phosphates over a non-ionogenic adsorber resin which comprises unsaturated cyclic nitrogen bases and eluting thiamine monophosphate and thiamine diphosphate with a suitable solvent.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: July 22, 2003
    Assignee: Merck Patent GmbH
    Inventors: Holger Krummradt, Klaus Beschmann, Frank-Hardi Wartenberg, Horst Diekmann
  • Method for producing L-ascorbic acid
    Patent number: 6573393
    Abstract: The invention relates to a method for producing L-ascorbic acid from 2-keto-L-gulonic acid or 2,3-4,6-diacetone-2-keto-L-gulonic acid. The reaction is carried out in the presence of water and hydrogen halide and the concentration of the hydrogen halide in water is greater than 37 wt. %.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: June 3, 2003
    Assignee: Merck KGAA
    Inventors: Ulrich Fechtel, Wolfgang Heinz, Klaus Beschmann, Bernd Müller, Jöran Stoldt
  • N-methyl-N-[(1S)-1-phenyl-2-(3S)-hydroxypyrrolidin-1-yl)ethyl]-2 -2-diphenylacetamide
    Patent number: 6060504
    Abstract: The invention relates to a novel heat-stable form of N-methyl-N-[(1S)-1-phenyl-2-((3S)-3-hydroxypyrrolidin-1-yl)ethyl]-2,2-diph enylacetamide and to a process for the preparation and isolation of this compound in this novel form and to use for the production of medicaments which contain this compound and/or one of its physiologically acceptable salts.
    Type: Grant
    Filed: August 26, 1996
    Date of Patent: May 9, 2000
    Assignee: Merck Patent Gesellschaft mit Beschrankter Haftung
    Inventors: Inge Stein, Holger Beeres, Klaus Beschmann, Steffen Neuenfeld, Andrew Barber