Patents by Inventor Gabriella Brandi

Gabriella Brandi 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: 4618439
    Abstract: Multifunctional additive for lubricating oils consisting of a base copolymer and of monomers grafted to said base copolymer;said base copolymer being the product of copolymerization of at least an alkyl metacrylate containing from 1 to 4 carbon atoms in its alkyl group, with at least an alkyl metacrylate containing from 10 to 18 carbon atoms in its alkyl group;said graft monomers comprising at least a member selected from the class consisting of N-vinylimidazoles, N-vinylpyrrolidones, vinylpyridines and N,N-dialkylaminoethyl-metacrylates; and at least a member selected in the class of compounds definable by means of the general formula:CH.sub.3 OCH.sub.2 .dbd.C--C--[O--CH.sub.2 CH.sub.2 ].sub.n --NHRwherein:n is 0 or 1;R is a group selected from: ##STR1## (R', R" and R'" being alkyl groups of from 1 to 18 carbon atoms).
    Type: Grant
    Filed: June 10, 1985
    Date of Patent: October 21, 1986
    Assignees: AGIP Petroli S.p.A., Consiglio Nazionale Delle Ricerche
    Inventors: Gabriella Brandi, Paolo Koch, Stefano Maiorana, Piero Dalla Croce, Clara Baldoli
  • Patent number: 3935175
    Abstract: An olefin or diolefin is polymerized, and mixtures thereof are copolymerized, in the presence of a catalyst system consisting of:A. a uranium compound consisting of U(OCH.sub.3).sub.4, U(OCH.sub.3).sub.3 Cl, U(OC.sub.4 H.sub.9).sub.4, U(OC.sub.8 H.sub.17).sub.4, U [N(C.sub.2 H.sub.5).sub.2 ].sub.4, U [N(C.sub.2 H.sub.5).sub.2 ].sub.3 Br, U(OCH.sub.3).sub.5, U(O-i-C.sub.4 H.sub.9).sub.5 ;b. a reducing compound of a metal belonging to the 2nd or 3rd group of the periodic system, selected from the hydrides, mixed hydrides and alkyl derivatives thereof;C. a Lewis acid selected from AlBr.sub.3, AlI.sub.3, AlCl.sub.3, AlCl.sub.3.OEt.sub.2, Al R Cl.sub.2, B Cl.sub.3 and TiCl.sub.4, wherein R is a hydrocarbon radical.
    Type: Grant
    Filed: November 19, 1973
    Date of Patent: January 27, 1976
    Assignee: Snam Progetti S.p.A.
    Inventors: Gabriele Lugli, Alessandro Mazzei, Gabriella Brandi