Patents by Inventor Maria A. Marabini

Maria A. Marabini 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).

  • Collecting agents for the selective flotation of lead and zinc ores
    Patent number: 4724072
    Abstract: Organic ionic collecting agents for the selective flotation of lead and zinc ores, said agents having the following general formula: ##STR1## wherein the symbols have the following meanings: R represents an alkoxyl group having from 3 to 12 carbon atoms;R.sub.1 represents H, a linear or branched chain alkyl group, an alkoxyl or hydroxyalkyl group containing up to 12 carbon atoms;X represents H, Cl, Br, I, F, CN, CONH.sub.2, NO.sub.2, SO.sub.2 NH.sub.2 ;M represents H, Na, K, Li, Cs.
    Type: Grant
    Filed: April 29, 1986
    Date of Patent: February 9, 1988
    Assignee: Consiglio Nazionale Delle Ricerche
    Inventors: Giorgio Bornengo, Filippo M. Carlini, Maria A. Marabini, Vittorio Alesse