Patents by Inventor Peter Sebok

Peter Sebok 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).

  • Benzopyran derivatives
    Patent number: 5703113
    Abstract: The invention relates to benzopyran compounds of formula (I) possessing pharmacological activity, as well as to pharmaceutical compositions containing the compounds of formula (I) and processes for the preparation thereof.
    Type: Grant
    Filed: November 8, 1995
    Date of Patent: December 30, 1997
    Assignee: Alkaloida Vegyeszeti Gyar
    Inventors: Tibor Eszenyi, Peter Sebok, Laszlo Frank, Gyula Papp, Tibor Timar, Tamas Bartik
  • Process for the preparation of anti-hypertensive benzopyran
    Patent number: 5223629
    Abstract: A process is disclosed for the preparation of (.+-.)-6-cyano-3,4-dihydro-2,2-dimethyl-trans-4-(2-oxo-1-pyrrol idino)-2H-1-benzopyran-3-ol of the Formula (VI) ##STR1## from 4-cyanophenol of the Formula (I) ##STR2## which comprises reacting 4-cyanophenol of the Formula (I) with isoprene, followed with bromination and dehydrobromination steps with formation of intermediates to react with 2-pyrrolidone resulting in obtaining the compound of the Formula (VI).
    Type: Grant
    Filed: December 17, 1991
    Date of Patent: June 29, 1993
    Assignee: Alkaloida Vegyeszeti Gyar
    Inventors: Tibor Timar, Tibor Eszenyi, Peter Sebok, Vilmos Galamb, Julia Fazekas, Terezia Istvan, Eva Kovach, Erika Nagy
  • Process for the preparation of anti-hypertensive benzopyran derivative
    Patent number: 5145985
    Abstract: A process is disclosed for the preparation of (.+-.)-6-cyano-3,4-dihydro-2,2-dimethyl-trans-4-(2-oxo-1-pyrrol idino)-2H-1-benzopyran-3-ol of the Formula (VI) ##STR1## from 4-cyanophenol of the Formula (I) ##STR2## which comprises reacting 4-cyanophenol of the Formula (I) with isoprene, followed with bromination and dehydrobromination steps with formation of intermediates to react with 2-pyrrolidone resulting in obtaining the compound of the Formula (VI).
    Type: Grant
    Filed: June 25, 1990
    Date of Patent: September 8, 1992
    Assignee: Alkaloida Vegyeszeti Gyar
    Inventors: Tibor Timar, Tibor Eszenyi, Peter Sebok, Vilmos Galamb, Julia Fazekas nee Kozak, Terezia Istvan nee Katona, Eva Kovach nee Lakatos, Erika Nagy nee Csaki