Patents by Inventor Giuseppe Querzola

Giuseppe Querzola 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 production of chlorothalonyl
    Patent number: 4942250
    Abstract: Process for the production of 2,4,5,6-tetrachloroisophtalonitrile, with formula (I), having a crystallographic structure suited for producing fungicide compositions remaining stable throughout time and having a high biological activity, wherein a thermal and/or mechanical treatment is carried out on the non-suited crystallographic structure, both by gradually decreasing the temperature during the de-sublimation phase, subsequent to industrial synthesis, and by supplying thermal energy--in static or dynamic conditions--and/or mechanical energy to the industrial technical product having a nonsuited crystallographic structure eventually during the phase of preparation or of micronization of said product.
    Type: Grant
    Filed: December 17, 1986
    Date of Patent: July 17, 1990
    Assignee: S.I.P.C.A.M. - Societa Italiana Prodotti Chimici e per l'Agricoltura Milano S.p.A.
    Inventors: Giuseppe Querzola, Gino Epis