Patents by Inventor Maria Andrei

Maria Andrei 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).

  • Solid polymeric electrolyte and electrochemical generators containing it
    Patent number: 4886716
    Abstract: A solid polymeric electrolyte is constituted by a solid solution of an ionic compound in a cross-linked polyether, wherein this latter is the copolymerization product of a vinyl-ether of formula:R--(O--CH.sub.2 --CH.sub.2).sub.n --O--CH.dbd.CH.sub.2 (I)wherein:R is the methyl or ehtyl radical; andn is an integer comprised within the range of from 1 to 16; with a di-vinyl-ether of formula:CH.sub.2 .dbd.CH--(O--CH.sub.2 --CH.sub.2).sub.m --O--CH.dbd.CH.sub.2(II)wherein:m is an integer comprised within the range of from 1 to 16; with a molar ratio of the di-vinyl-ether (II) to the vinyl-ether (I) comprised within the range of from 1/100 to 10/100; with said polyether having a weight average molecular weight of about 10,000, and a glass transition temperature (T.sub.g) comprised within the range of from --60.degree. C. to --80.degree. C.Such a solid polymeric electrolyte is used in the manufacturing of high-energy-density electrochemical generators.
    Type: Grant
    Filed: October 6, 1988
    Date of Patent: December 12, 1989
    Assignee: Eniricerche S.p.A.
    Inventors: Arnaldo Roggero, Bruno Scrosati, Maria Andrei, Stefano Passerini, Ugo Pedretti