Patents by Inventor Amina Zerdouk

Amina Zerdouk 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).

  • Hybrid yard for the fabrication of fiber preforms of composite parts, and method for its preparation
    Patent number: 6228786
    Abstract: A yarn is formed from discontinuous parallel fibers which are not twisted and which are held together by a covering yarn of sacrificial material wound around the fibers. The fibers comprise an intimate mixture of fibers of at least two different natures selected from carbon fibers or pre-oxidized polyacrylonitrile based carbon precursor fibers, or anisotropic or isotropic pitch based carbon precursor fibers, or phenolic or cellulosic based carbon precursor fibers, and ceramic fibers or ceramic precursor fibers. The mixture of fibers comprises, in its carbon state, at least 15% by weight of high strength fibers, having a tensile strength of at least 1500 MPa and a modulus of at least 150 MPa, and at least 15% by weight of fibers with a low Young's modulus of at most 100 GPa.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: May 8, 2001
    Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation
    Inventors: Pierre Olry, Dominique Coupe, Renaud Duval, Amina Zerdouk
  • Hybrid yarn for the fabrication of fibre preforms of composite parts, and method for its preparation
    Patent number: 6051313
    Abstract: A yarn is formed from discontinuous parallel fibers which are not twisted d which are held together by a covering yarn of sacrificial material wound around the fibers. The fibers comprise an intimate mixture of fibers of at least two different natures selected from carbon fibers or pre-oxidized polyacrylonitrile based carbon precursor fibers, or anisotropic or isotropic pitch based carbon precursor fibers, or phenolic or cellulosic based carbon precursor fibers, and ceramic fibers or ceramic precursor fibers. The mixture of fibers comprises, in its carbon state, at least 15% by weight of high strength fibers, having a tensile strength of at least 1500 MPa and a modulus of at least 150 MPa, and at least 15% by weight of fibers with a low Young's modulus of at most 100 GPa.
    Type: Grant
    Filed: November 20, 1997
    Date of Patent: April 18, 2000
    Assignee: Societe Nationale D'Etude et de Construction de Moteurs D'Aviation
    Inventors: Pierre Olry, Dominique Coupe, Renaud Duval, Amina Zerdouk