Patents by Inventor Laszlo Varjas

Laszlo Varjas 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).

  • Patent number: 4745128
    Abstract: The present invention relates to pesticides containing carbamic acid ester derivatives of the formula (I), ##STR1## to pesticide compositions containing these compounds and to a process for their preparation.In the general formulaR.sup.1 is alkyl of from one to four carbon atoms;R.sup.2 represents alkyl of from one to four carbon atoms or (when X is alkyl of from one to twelve carbon atoms) alkyl of from one to twelve carbon atoms;R.sup.3 is H, methyl or ethyl;R.sup.4 and R.sup.5 are, independently from each other, H or halogen atoms;n=0, 1 or 2;X represents alkyl of from one to twelve carbon atoms or an 4-aryloxyphenoxyalkyl group of formula (II). ##STR2## The pesticide of the invention can be used for controlling insects and mites.
    Type: Grant
    Filed: January 9, 1987
    Date of Patent: May 17, 1988
    Assignee: Innofinance Altalanos Innovacios Penzintezet
    Inventors: Istvan Ujvari, Gyorgy Matolcsy, Ivan Belai, Laszlo Varjas, Bela Darvas
  • Patent number: 4344959
    Abstract: The invention relates to new compounds of the general formula (I), ##STR1## wherein R.sup.1 is hydrogen or a lower alkoxy group andZ.sup.1 is hydrogen, orR.sup.1 and Z.sup.1 form together a double bond,Z.sup.2 is hydrogen andB is hydroxy, orZ.sup.2 and B form together a double bond,Z.sup.3 and Z.sup.4 each stand for hydrogen or they form together an ethylene group, orZ.sup.4 and D form together a double bond,C is oxygen atom or a lower alkoxy group,D is a valence bond if C stands for oxygen, or otherwise D forms a double bond together with Z.sup.4 or Z.sup.5,Z.sup.5 forms a double bond together with D or represents hydrogen, andR.sup.2 is a group of the general formula --COOR.sup.3, wherein R.sup.3 is lower alkyl, orZ.sup.5 and R.sup.2 form together a 1-oxo-2-oxa-tetramethylene group, with the proviso that if Z.sup.3 and Z.sup.4 form together an ethylene group, R.sup.2 may stand only for a --COOR.sup.3 group,insecticidal compositions containing them, as well as to a process for their preparation.
    Type: Grant
    Filed: April 6, 1981
    Date of Patent: August 17, 1982
    Assignee: Egyt Gyogyszervegyeszeti Gyar
    Inventors: Lajos Novak, Csaba Szantay, Janos Rohaly, Attila Kis-Tamas, Laszlo Varjas, Janos Csutak