Patents by Inventor Ludwig Patt

Ludwig Patt 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).

  • Galenical compositions
    Patent number: 4411882
    Abstract: The invention provides solid enteric-coated compositions in unit dose form for oral application, the core of the composition containing an ergot alkaloid and a polyalkoxyalkylene sterol ether. The compositions are characterized by a prolonged effect and a good bioavailability of the active agent. The core may be in solid solution form. The enteric-coating may also be surrounded by an outer medicament layer.
    Type: Grant
    Filed: June 17, 1981
    Date of Patent: October 25, 1983
    Assignee: Sandoz Ltd.
    Inventors: Joachim Franz, Ludwig Patt
  • Stable solutions of hydrogenated ergotalkaloids
    Patent number: 4402949
    Abstract: Stable solutions of (a) hydrogenated ergot alkaloids and (b) heparin as well as the salts thereof in a carrier medium comprising (c) water, (d) a mono- or poly-alcohol, and (e) urea or a pharmaceutically acceptable calcium or magnesium salt or ethylenediaminetetraacetic acid, and combinations thereof.
    Type: Grant
    Filed: November 2, 1981
    Date of Patent: September 6, 1983
    Assignee: Sandoz Ltd.
    Inventors: Volker Hartmann, Karl-Heinz Otto, Ludwig Patt
  • Stable solutions and processes for their preparation
    Patent number: 4138565
    Abstract: Solutions of certain hydrogenated ergopeptide alkaloids in mixtures of pharmacologically acceptable alcohols and water have improved stability. Preferred solvents are mixtures of ethanol, propylene glycol and glycerol containing from 15-40% wt. of water and having dielectric constants between 34 and 46. With these solutions it is not essential to carry out the filing operation under an inert atmosphere.
    Type: Grant
    Filed: September 15, 1977
    Date of Patent: February 6, 1979
    Assignee: Sandoz Ltd.
    Inventors: Lothar Ehrhardt, Ludwig Patt, Volker Hartmann