Patents by Inventor Rachid Yazami

Rachid Yazami 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).

  • Rechargeable battery with solid electrolyte
    Patent number: 5175066
    Abstract: The present invention relates to a rechargeable battery with solid electrolyte.The battery according to the invention comprises a solid polymer electrolyte, an anode composed of a lithium source and a cathode comprising a lithium-receiving material. The lithium-receiving material is a compound of the formula CF.sub.x M.sub.y, where M is chosen from I, Cl, Br, Re, W, Mo, B and 0.3.ltoreq.x.ltoreq.0.9, 0.02.ltoreq.y.ltoreq.0.06, and the structure of this material is such that the carbon atoms form planar hexagons.The battery according to the invention has improved capacity.
    Type: Grant
    Filed: June 25, 1991
    Date of Patent: December 29, 1992
    Assignee: Centre National de la Recherche Scientifique (CNRS)
    Inventors: Andre Hamwi, Rachid Yazami
  • Lithium cell
    Patent number: 5017444
    Abstract: A lithium cell comprising a negative pole made of lithium and a positive pole made of a vanadium fluoride-graphite intercalation compound of the formula C.sub.x VF.sub.6 wherein x is from 8.0 to 80.
    Type: Grant
    Filed: August 31, 1990
    Date of Patent: May 21, 1991
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Tsuyoshi Nakajima, Rachid Yazami
  • Insertion compounds of graphite with improved performances and electrochemical applications of those compounds
    Patent number: 4584252
    Abstract: The present invention relates to insertion compounds with improved performances for electrochemical applications. They are characterized in that they are obtained from a graphite with a specific surface area of at least 100 m.sup.2 /g, and a granulometry at most equal to 4 .mu.m. The graphite oxide or the graphite-NiCl.sub.2 first stage obtained from such a graphite is used as constituting agent of the cathode of a lithium battery and it gives to same excellent characteristics. The graphite oxide performances may further be improved by preparing it by double oxidation of a graphite having any specific surface area and the granulometry is of the order of the .mu.m, as shown by FIG. 2 which represents the intensiostatic discharge curves of the lithium batteries the cathode of which contains the graphite oxide.
    Type: Grant
    Filed: May 21, 1984
    Date of Patent: April 22, 1986
    Assignee: Le Carbone Lorraine, S.A.
    Inventors: Philippe Touzain, Rachid Yazami, Jacques Maire