Patents by Inventor Maria Stiller

Maria Stiller 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 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
  • Process for the preparation of morphologically homogeneous forms of thiazole derivatives
    Patent number: 5128477
    Abstract: The invention relates to two morphologically homogeneous forms of Famotidine [chemical name: N-sulfamoyl-3-(2-guanidino-thiazole-4-yl-methylthio)-propionamidine]. Said forms are prepared by selective crystallization or precipitation.
    Type: Grant
    Filed: July 11, 1991
    Date of Patent: July 7, 1992
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Peter Bod, Kalman Harsanyi, Bela Hegedus, Erik Bogsch, Eva Fekecs, Imre Peter, Zsuzsanna Aracs nee Trischler, Sandor Miszori, Maria Stiller
  • Process for the preparation of morphologically homogeneous forms of thiazole derivatives
    Patent number: 5120850
    Abstract: The invention relates to two morphologically homogeneous forms of Famotidine [chemical name: N-sulfamoyl-3-(2-guanidino-thiazole-4-yl-methylthio)-propionamidine]. Said forms are prepared by selective crystallization or precipitation.
    Type: Grant
    Filed: April 27, 1990
    Date of Patent: June 9, 1992
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Peter Bod, Kalman Harsanyi, Bela Hegedus, Erik Bogsch, Eva Fekecs, Imre Peter, Zsuzsanna Aracs nee Trischler, Sandor Miszori, Maria Stiller
  • Process for the preparation of morphologically homogeneous forms of thiazole derivatives
    Patent number: 4894459
    Abstract: The invention relates to two morphologically homogeneous forms of Famotidine [chemical name: N-sulfamoyl-3-(2-guanidino-thiazole-4-yl-methylthio)-propionamidine]. Said forms are prepared by selective crystallisation or precipitation.
    Type: Grant
    Filed: August 4, 1987
    Date of Patent: January 16, 1990
    Assignee: Richter Gedeon Vehyeszeti Gyar Rt.
    Inventors: Peter Bod, Kalman Harsanyi, Bela Hegedus, Erik Bogsch, Eva Fekecs, Imre Peter, Zsuzsanna Aracs ne Trischler, Sandor Miszori, Maria Stiller