Patents by Inventor Zsuzsanna Aracs nee Tischler

Zsuzsanna Aracs nee Tischler 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).

  • Process for the resolution of threo-3-[(2-aminophenyl)-thio]-2-hydroxy-3-(4-methoxy-phenyl)propionic acid
    Patent number: 5292933
    Abstract: The invention relates to a novel process for the resolution of an acid mixture (hereinafter: threo acid mixture) containing (+)-threo-3-[(2-aminophenyl)thio]-2-hydroxy-3-(4-methoxyphenyl)-propionic acid [hereinafter: (+)-threo acid]and (-)-threo-3-[(2-aminophenyl)thio]-2-hydroxy-3-(4-methoxyphenyl)-propionic acid [hereinafter: (-)-threo acid].
    Type: Grant
    Filed: April 9, 1991
    Date of Patent: March 8, 1994
    Assignee: Richter Gedeon Vegyeszeti Gyar RT
    Inventors: Kalman Harsanyi, Elemer Fogassy, Maria cs, Tibor Gizur, Zsuzsanna Aracs nee Tischler, Katalin Berki, Laszlo Toke, Zsuzsanna Martonffy nee Jaszay
  • Process for preparing the octahydro-indolo[2,3-a] quinolizine diester derivatives
    Patent number: 5218119
    Abstract: The present invention relates to racemic or optically active cis octahydro-indolo [2,3-a] quinolizine diester derivatives.
    Type: Grant
    Filed: January 13, 1992
    Date of Patent: June 8, 1993
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Janos Kreidl, Maria Farkas nee Kirjak, Katalin Nogradi, Ida Deutsch nee Juhasz, Judit Meszaros nee Brill, deceased, Bela Stefko, Gyorgy Visky, Zsuzsanna Aracs nee Tischler, Bela Benke, Maria Stiller, Ferenc Drexler
  • 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