Patents by Inventor Michael Arlt

Michael Arlt 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).

  • 4-(arylaminomethylene)-2,4-dihydro-3-pyrazolones
    Patent number: 5869516
    Abstract: 5-Pyrazolinone derivatives of the general formula I: ##STR1## in which the R.sup.1 -R.sup.3 variables are as defined herein and the physiologically acceptable salts thereof; processes for the preparation of these compounds, and in particular their use as selective inhibitors of cGMP-specific phosphodiesterase (cGMP PDE), thus as pharmaceutically active compounds.
    Type: Grant
    Filed: May 16, 1996
    Date of Patent: February 9, 1999
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Michael Arlt, Rochus Jonas, Maria Christadler, Gunter Schneider, Michael Klockow