Patents by Inventor Istvan Szepesi

Istvan Szepesi 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).

  • Method of treating fungus-infected plants with phenylazocyanoacetic ester derivatives
    Patent number: 4058608
    Abstract: The invention relates to a method of combatting phytopathogenic fungi, primarily powdery mildew. The method involves administering compositions according to the invention which contain as active principle at least one compound of the formula (I), ##STR1## wherein R.sup.1 is a C.sub.1-12 alkyl or a chloroethyl group,R.sup.2 is hydrogen, halogen, a C.sub.1-4 alkyl, a C.sub.1-4 alkoxy or nitro group,R.sup.3 is hydrogen, halogen, a C.sub.1-4 alkyl or nitro group, andR.sup.4 is hydrogen, halogen, a C.sub.1-4 alkyl or nitro group, or an acid addition salt thereof.
    Type: Grant
    Filed: October 20, 1975
    Date of Patent: November 15, 1977
    Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyara RT
    Inventors: Tibor Zsolnai, Gyorgy Lugosi, Istvan Szepesi, Maria Bakonyi, Istvan Racz, Erzsebet Radvany nee Hegedus