Patents by Inventor Istvan Csorvassy

Istvan Csorvassy 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).

  • Process for the preparation of N-phosphonomethyl-glycine
    Patent number: 4486359
    Abstract: N-phosphonomethylglycine is prepared from glycine and parsformaldehyde to obtain an intermediate which is reacted with dialkylphosphite to obtain an ester of the desired compound which is then hydrolyzed.
    Type: Grant
    Filed: October 20, 1983
    Date of Patent: December 4, 1984
    Assignee: Alkaloida Vegyeszeti Gyar
    Inventors: Marta Brendel nee Hajnoczki, Imre Gulyas, Istvan Gyoker, Kalman Zsupan, Istvan Csorvassy, Zoltan Salamon, Gabor Somogyi, Istvan Szentkiralyi, Tibor Timar, E Biro nee Czapary, Istvan Fodor, Janos Repasi