Patents by Inventor Katalin Horvath nee Berki

Katalin Horvath nee Berki 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).

  • Racemic and optically active octahydro-indolo(2,3-a) tetrahydropyranyl (2,3-c) quinolizine diester derivatives and process for preparing the same
    Patent number: 5122607
    Abstract: New intermediate compounds are disclosed of the formula I, ##STR1## wherein R.sub.1 and R.sub.2 are independently alkyl having 1 to 4 carbon atoms,or acid-addition salts thereof of formula Ib, ##STR2## wherein X represents an acid residue, and a process for the preparation of the intermediate compounds.
    Type: Grant
    Filed: June 21, 1990
    Date of Patent: June 16, 1992
    Assignee: Richter Gedeon Vegyesczeti Gyar RT.
    Inventors: Janos Kreidl, Csaba Szantay, Lajos Szaho, Maria Farkas nee Kirjak, Gyorgy Kalaus, Katalin Nogradi, Andras Nemes, Judit Meszaros nee Brill, Zsuzsanna Aracs nee Tischler, Bela Stefko, Janos Sapi, Ida Deutsch nee Juhasz, Istvan Hegedus, Bela Benke, Kalman Graf, Kalmam Gaf, Katalin Horvath nee Berki