Patents by Inventor Alberto Diena

Alberto Diena 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 preparing substituted 1,2,4-triazole derivatives
    Patent number: 4151169
    Abstract: New 1-alkyl-3,5-disubstituted-1,2,4-triazole derivatives of following formula I ##STR1## wherein R may represent phenyl; phenyl substituted by a radical selected from (C.sub.1-4)alkyl, e.g. methyl, ethyl, propyl, isopropyl, butyl, sec.-butyl, isobutyl or tert.-butyl, (C.sub.1-4)alkoxy, e.g. methoxy, ethoxy, propoxy, butoxy, isobutyloxy or tert.-butoxy, fluoro, chloro, bromo, nitro, amino, cyano, carbamoyl, carboxy, hydroxymethyl, methylenedioxy and trifluoromethyl; dichlorophenyl; dimethoxyphenyl; 3,4,5-trimethoxyphenyl;R.sub.1 may represent phenyl, phenyl substituted by a radical selected from (C.sub.1-4)alkyl as above defined, (C.sub.1-4)alkoxy as above defined, fluoro, chloro, bromo, hydroxymethyl, (C.sub.2-4)aliphatic acyloxymethyl, e.g. acetoxymethyl, propionyloxymethyl or butyryloxymethyl, carbamoyloxymethyl, bromomethyl and dimethylaminomethyl; dimethylphenyl; dimethoxyphenyl; phenyl contemporaneously substituted by o-hydroxymethyl and chloro;R.sub.2 represents a (C.sub.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: April 24, 1979
    Assignee: Gruppo Lepetit
    Inventors: Amedeo O. Sale, Giorgio Pifferi, Pietro Consonni, Alberto Diena, Bonaccorso R. Del Turco
  • Substituted 1,2,4-triazole derivatives
    Patent number: 4119635
    Abstract: New 1-alkyl-3,5-disubstituted-1,2,4-triazole derivatives of following formula I ##STR1## wherein R may represent phenyl; phenyl substituted by a radical selected from (C.sub.1-4)alkyl, e.g. methyl, ethyl, propyl, isopropyl, butyl, sec.-butyl, isobutyl or tert.-butyl, (C.sub.1-4)alkoxy, e.g. methoxy, ethoxy, propoxy, butoxy, isobutyloxy or tert.-butoxy, fluoro, chloro, bromo, nitro, amino, cyano, carbamoyl, carboxy, hydroxymethyl, methylenedioxy and trifluoromethyl; dichlorophenyl; dimethoxyphenyl; 3,4,5-trimethoxyphenyl;R.sub.1 may represent phenyl, phenyl substituted by a radical selected from (C.sub.1-4)alkyl as above defined, (C.sub.1-4)alkoxy as above defined; fluoro, chloro, bromo, hydroxymethyl, (C.sub.2-4)aliphatic acyloxymethyl, e.g. acetoxymethyl, propionyloxymethyl or butyryloxymethyl, carbamoyloxymethyl, bromomethyl and dimethylaminomethyl; dimethylphenyl; dimethoxyphenyl; phenyl contemporaneously substituted by o-hydroxymethyl and chloro;R.sub.2 represents a (C.sub.
    Type: Grant
    Filed: September 3, 1976
    Date of Patent: October 10, 1978
    Assignee: Gruppo Lepetit S.p.A.
    Inventors: Amedeo Omodei-Sale, Giorgio Pifferi, Pietro Consonni, Alberto Diena, Bonaccorso Rosselli del Turco