Patents by Inventor Ben J. Youssef

Ben J. Youssef 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).

  • Bloch line magnetic memory
    Patent number: 5260891
    Abstract: A Bloch line magnetic memory has a magnetic film of thickness h located on a substrate and includes Bloch lines of width .LAMBDA.o. The magnetic film satisfies the condition (1) h/.LAMBDA.o<14 with .LAMBDA.o=.sqroot.A/2.pi.Ms.sup.2, in which A represents the magnetic exchange constant and 4.pi.Ms represents the saturation magnetization of the film.
    Type: Grant
    Filed: September 19, 1991
    Date of Patent: November 9, 1993
    Assignee: L'Etat Francais represente par la Delegue General
    Inventors: Lucile Arnaud, Ben J. Youssef, Didier Challeton, Jacques Miltat