Patents by Inventor Maria Francisca Martinez Nu{overscore (n)}ez

Maria Francisca Martinez Nu{overscore (n)}ez 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).

  • Single-carbon bridges bys cyclopentadienyl compounds and metallocene complexes thereof
    Patent number: 6534665
    Abstract: The present invention relates to metallocenes, wherein the two cyclopentadienyl rings are connected to each other by a single carbon atom characterized by the following general formula III where each A, equal to or different from each other, is selected from the group consisting of: hydrogen, OR3, NRR4, or SR5; and to compounds of formula IV wherein each B, equal to or different from each other, is selected from the group consisting of: OH, NRH or SH, obtained by hydrolizing the corresponding oxygen, nitrogen or sulfur containing groups from compounds of formula III. These compounds are used as active catalyst components in the polymerization of olefins.
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: March 18, 2003
    Assignee: Repsol Quimica S.A.
    Inventors: Maria Francisca Martinez Nu{overscore (n)}ez, Antonio Mu{overscore (n)}oz-Escalona LaFuente, Bego{overscore (n)}a Pe{overscore (n)}a Garcia, Pilar LaFuente Ca{overscore (n)}as