Patents by Inventor Jean-Jacques Lefevre

Jean-Jacques Lefevre 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).

  • Dielectric or magnetic anisotropy layers, laminated composite material incorporating said layers and their production process
    Patent number: 5110651
    Abstract: Dielectric or magnetic anisotropy layers, laminated composite material incorporating said layers and their production process. The laminated material has at least two stacks of assembled layers, a first stack constituted by a layer (2) of first dielectric fibers (4) oriented parallel to a first direction (x), and a layer (6) of first magnetic fibers (8) oriented parallel to a second direction (y) perpendicular to the first direction (x), and a second stack constituted by a layer (10) of second dielectric fibers (12) oriented parallel to the second direction (y), and a layer (14) of second magnetic fibers oriented parallel to the first direction (x). Each fiber is constituted by a thermoplastic polymer sheath containing a pulverulent magnetic or dielectric charge.
    Type: Grant
    Filed: October 12, 1990
    Date of Patent: May 5, 1992
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Thierry Massard, Claude Barbalat, Jean-Jacques Lefevre