Patents Assigned to Societe Generale de Constructions Electriques et Mecaniques Alsthom & Cie
  • Patent number: 4317867
    Abstract: A porous electrode for an electric cell, said electrode including a support layer and an active or catalytic layer, the thickness of the electrode (1a, 1b, 1c, 1d) lying between about 50 and 600 microns and preferably between 100 and 250 microns, the active or catalytic layer (2) and the support layer (3) each including 60 to 99% by weight of a hydrophobic polymer or binder and 40 to 1% by weight of a carbon-based divided conductive compound the two layers being, in the aggregate, hydrophobic and intimately joined, current being drawn off at points or lines which are spaced apart by a distance of about one millimeter from one another by an electronically conductive collector (4) in contact at the points or lines with the support layer (3).
    Type: Grant
    Filed: October 14, 1980
    Date of Patent: March 2, 1982
    Assignee: Societe Generale de Constructions Electriques et Mecaniques "Alsthom & Cie"
    Inventor: Bernard Warszawski
  • 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