Patents by Inventor Francisca Martínez Núñez

Francisca Martínez Núñez 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).

  • Catalytic systems for the polimerization and copolimerization of alpha-olefins
    Patent number: 7211538
    Abstract: Catalyst component for the polymerization of alpha-olefins in solution, in suspension, in gas phase at low and high pressure and temperature or in mass at high pressures and high or low temperatures, characterized in that is defined by general formulas I or II wherein: R, equal to or different from each other, is hydrogen or a radical which contains from 1 to 20 carbon atoms; this group optionally contains heteroatoms of groups 14 to 16 of the periodic table of the elements and boron; at least one group R contains a group OSiR?3, Q is selected from a group comprising: boron or an element from groups 14 or 16 of the periodic table; m value can change from 1 to 4 and it preferably is 1 or 2; L, equal to or different from each other, is a cyclic organic group united to M through a ? bond, or it is an atom from groups 15 or 16 of the periodic table; L1 and L2, equal to or different from each other, have the same meaning of L; M is a metal from groups 3, 4, 10 of the periodic table, lanthanide or actinide.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: May 1, 2007
    Assignee: Repsol Quimica S.A.
    Inventors: Jose Sancho Royo, Gerardo Hidalgo Llinás, Antonio Muñoz-Escalona Lafuente, Francisca Martínez Núñez, Carlos Martín Marcos, Pilar Lafuente Cañas, Begoña Peña García
  • CATALYTIC SYSTEMS FOR THE POLIMERISATION AND COPOLIMERISATION OF ALPHA-OLEFINS
    Publication number: 20030195109
    Abstract: Catalyst component for the polymerization of alpha-olefins in solution, in suspension, in gas phase at low and high pressure and temperature or in mass at high pressures and high or low temperatures, characterised in that is defined by general formulas I or II 1
    Type: Application
    Filed: October 31, 1997
    Publication date: October 16, 2003
    Inventors: JOSE SANCHO ROYO, GERARDO HIDALGO LLINAS, ANTONIO MUNOZ-ESCALONA LAFUENTE, M. FRANCISCA MARTINEZ NUNEZ, CARLOS MARTIN MARCOS, PILAR LAFUENTE CANAS, BEGONA PENA GARCIA