Patents by Inventor Bernadette Pichon

Bernadette Pichon 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).

  • Supercapacitor having a non-aqueous electrolyte and an active carbon electrode
    Patent number: 6356432
    Abstract: The invention relates to a supercapacitor having a non-aqueous electrolyte and two carbon electrodes each containing a binder and an electrochemically active material constituted by active carbon having a specific surface area greater than about 2000 m2/g. The binder has a mixture of carboxymethylcellulose and a copolymer of styrene and butadiene.
    Type: Grant
    Filed: December 29, 1998
    Date of Patent: March 12, 2002
    Assignee: Alcatel
    Inventors: Véronique Danel, Jean-Pierre Flipo, Xavier Andrieu, Bernadette Pichon, Sylvie Barusseau
  • Method of manufacturing a sponge-type support for an electrode in an electrochemical cell
    Patent number: 5296261
    Abstract: A method of manufacturing a sponge support made of a metal selected from nickel, copper and lead, including (a) impregnating a sponge made of an organic material based on polyurethane, polyester or polyether with a solution of a nitrite or a sulfate of the metal, the concentration of the solution being a function of the desired weight per unit area for the sponge made of metal, the sponge made of an organic material has a porosity in the range of from 96% to 98% and a pore-size in the range of from 200 .mu.m to 400 .mu.m, and (b) heat-treating the impregnated sponge to remove the organic material.
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: March 22, 1994
    Assignee: Saft
    Inventors: Jacques Bouet, Bernadette Pichon
  • Active mass for an electrode of an electrochemical cell, the active mass having a three-dimensional porous support
    Patent number: 5284601
    Abstract: A paste for impregnating a three-dimensional metal sponge porous support, which impregnated porous support is dried to provide an electrode for an electrochemical cell. The paste comprises (i) an electrochemically active material selected from a metal hydride and a metal hydroxide in an amount of from 40% to 60% of the weight of the paste, and (ii) a gel containing xanthan in an amount of from 0.5% to 2% of the weight of the gel. The paste has a yield point greater than the shear stress due to the gravity so that the paste does not flow out of the impregnated support. Also disclosed is a method of making an electrochemical cell electrode, comprising the steps of preparing the above-described paste, impregnating the paste into a three-dimensional metal sponge porous support, and drying the paste. The inventive paste is advantageously retained in the support during the drying step.
    Type: Grant
    Filed: July 8, 1992
    Date of Patent: February 8, 1994
    Assignee: SAFT
    Inventors: Jacques Bouet, Bernard Crochepierre, Bernadette Pichon
  • Method for forming a catalytic deposit
    Patent number: 3932304
    Abstract: A method for producing a catalytic carbon deposit on a conductive support mprising admixing (i) a suspension of between 200 and 400 grams per liter of catalytic carbon in a liquid medium, with (ii) a solution of between 20 and 50 grams per liter of polyvinyl chloride in a cyclic ketone solvent, to form an emulsion, depositing said emulsion on said support, and evaporating the liquid components of said emulsion from said support to form a layer of catalytic carbon in a polyvinyl chloride binder.
    Type: Grant
    Filed: April 4, 1974
    Date of Patent: January 13, 1976
    Assignee: Societe Generale de Constructions Electriques et Mecaniques Alsthom & Cie
    Inventors: Claude Lambert, Pierre Bono, Bernadette Pichon, Jacques Daunay