Patents by Inventor Wael F. Ragheb

Wael F. Ragheb 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).

  • Ductile hybrid structural fabric
    Patent number: 6790518
    Abstract: A structural fabric having a first fiber with a first ultimate strain and a second fiber with a second ultimate strain greater than the first ultimate strain, the first and second fibers being in the same plane. The invention is further directed to a structural fabric having a plurality of axial fibers and a plurality of first diagonal fibers braided with the axial fibers and oriented at a first braid angle relative thereto. The axial fibers include first and second fibers each with an ultimate strain. The ultimate strain of the second fiber again being greater than the ultimate strain of the first fiber. Additionally, the invention is directed to a concrete beam strengthened with the structural fibers of the present invention.
    Type: Grant
    Filed: June 7, 2002
    Date of Patent: September 14, 2004
    Assignee: Lawrence Technological University
    Inventors: Nabil F. Grace, Wael F. Ragheb, George Abdel-Sayed
  • Ductile hybrid structural fabric
    Publication number: 20030110733
    Abstract: A structural fabric having a first fiber with a first ultimate strain and a second fiber with a second ultimate strain greater than the first ultimate strain, the first and second fibers being in the same plane. The invention is further directed to a structural fabric having a plurality of axial fibers and a plurality of first diagonal fibers braided with the axial fibers and oriented at a first braid angle relative thereto. The axial fibers include first and second fibers each with an ultimate strain. The ultimate strain of the second fiber again being greater than the ultimate strain of the first fiber. Additionally, the invention is directed to a concrete beam strengthened with the structural fibers of the present invention.
    Type: Application
    Filed: June 7, 2002
    Publication date: June 19, 2003
    Inventors: Nabil F. Grace, Wael F. Ragheb, George Abdel-Sayed