Patents by Inventor Laszlo Hazai

Laszlo Hazai 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).

  • 1,4-Dihydro-3 (2H)-isoquinolinone derivatives
    Patent number: 3946018
    Abstract: Compounds of the formula ##SPC1##WhereinR.sub.1 and R.sub.2 each represent hydrogen or a straight-chained or branched C.sub.1.sub.-3 alkyl group,R stands for hydrogen or a straight-chained or branched C.sub.1.sub.-4 alkyl group,R.sub.3 stands for hydrogen or a straight-chained or branched C.sub.1.sub.-4 alkyl group.The new compounds of formula (I) possess valuable pharmacological properties, and act, primarily, on the central nervous system. Thus they can be used in the therapy first of all as the active agents of anticonvulsive medicines.
    Type: Grant
    Filed: February 5, 1974
    Date of Patent: March 23, 1976
    Assignee: Egyt Gyogyszervegyeszeti Gyar
    Inventors: Gyula Deak, Margit Doda, Lajos Gyorgy, Laszlo Hazai, Klara Pfeifer, deceased