Patents by Inventor Werner Seelen

Werner Seelen 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).

  • Pyrido ?1,2,3-DE!quinoxaline derivatives, process for their production and their use in pharmaceutical agents
    Patent number: 5750526
    Abstract: Pyrido?1,2,3-de!quinoxaline derivatives of formula I ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 each mean hydrogen, --POXY, halogen or --COR,R.sup.4 means hydrogen or OH,R.sup.5, R.sup.6 and R.sup.7 are the same or different and mean hydrogen, halogen, nitro, NR.sup.12 R.sup.13, cyano, CF.sub.3, C.sub.1-6 alkyl, C.sub.1-4 alkoxy, orR.sup.5 and R.sup.6 or R.sup.6 and R.sup.7 represent a fused benzene ring, and means a single or double bond,are described as well as their production and use in pharmaceutical agents.
    Type: Grant
    Filed: December 27, 1995
    Date of Patent: May 12, 1998
    Assignee: Schering Aktiengesellschaft
    Inventors: Martin Kruger, Werner Seelen, Lechoslaw Turski