Patents by Inventor Reinhold Weidner

Reinhold Weidner 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).

  • Cardiotonic thiadiazine derivatives
    Patent number: 5108998
    Abstract: New diazine derivatives corresponding to the general formula I ##STR1## and the physiologically acceptable salts thereof are described. The compounds according to the invention are new positive inotropic compounds having a higher and/or more selective action than compounds hitherto known and are therefore suitable for the treatment and prevention of diseases of the heart and circulation.
    Type: Grant
    Filed: April 23, 1990
    Date of Patent: April 28, 1992
    Assignee: Heumann Pharma GmbH & Co.
    Inventors: Peter Morsdorf, Heidrun Engler, Reinhold Weidner, Rolf Herter, Kurt-Henning Ahrens
  • 6-oxo-pyridazine derivatives, a process for their preparation and medicaments containing these compounds
    Patent number: 4968683
    Abstract: New 6-oxo-pyridazine derivatives corresponding to the general formula I ##STR1## which represent new, positive inotropic compounds having a higher and more selective inotropy-increasing activity are described.A process of preparation and the medical use of these substances or of a medicament containing these substances are also described.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: November 6, 1990
    Assignee: Heumann Pharma GmbH & Co.
    Inventors: Peter Morsdorf, Rolf Herter, Heidrun Engler, Volker Pfahlert, Reinhold Weidner, Kurt H. Ahrens