Patents by Inventor Maria Farkas nee Kirlyak

Maria Farkas nee Kirlyak 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).

  • Apovincaminic acid esters
    Patent number: 4474960
    Abstract: A process is disclosed for the preparation of racemic cis or trans apovincaminic acid esters of the formula (I) ##STR1## and the corresponding optically active derivatives of the formulae (Ia) ##STR2## wherein R.sup.1 and R.sup.2 are identical or different alkyl groups having 1 to 6 carbon atoms. Apovincaminic acid alkyl esters are well-known vasodilating compounds.
    Type: Grant
    Filed: June 11, 1982
    Date of Patent: October 2, 1984
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Csaba Szantay, Lajos Szabo, Gyorgy Kalaus, Janos Kreidl, Laszlo Czibula, Gyorgy Visky, Andras Nemes, Maria Farkas nee Kirlyak