Patents by Inventor Stephane Leonard

Stephane Leonard 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).

  • System and method for sealing a tank opening
    Publication number: 20040256587
    Abstract: System for closing off an opening in a plastic tank, formed from a sheet of multilayer plastic that includes a barrier layer, the said sheet being welded around the perimeter of the opening and provided with a peripheral region that is slimmed down so as to effectively restrict the permeation of gases and liquids into the layer located between the tank and the barrier layer.
    Type: Application
    Filed: June 2, 2004
    Publication date: December 23, 2004
    Inventors: Yannick Gerard, Stephane Leonard, Francois Dougnier
  • Thermoplastic impermeable hollow body
    Publication number: 20040247809
    Abstract: Impermeable hollow body suitable as a fuel tank, made of thermoplastic material comprising at least one polyolefin and coated with a polyvinyl alcohol film impermeable to and insoluble in water owing to its crosslinking by a chemical agent and/or owing to the presence of an epoxy protective layer.
    Type: Application
    Filed: April 19, 2004
    Publication date: December 9, 2004
    Inventors: Eric Dubois, Francois Dougnier, Stephane Leonard
  • Method for making a fuel tank in plastic material
    Patent number: 6814921
    Abstract: Process for manufacturing a plastic fuel tank from two shells formed by molding, which are joined together, at least one shell being produced by compression-molding a portion of a plastic sheet between a mold and a punch and by the remaining portion of the sheet being blow-molded in the region not compression-molded.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: November 9, 2004
    Assignee: Solvay (Societe Anonyme)
    Inventors: Jules-Joseph Van Schaftingen, Yannick Gerard, Serge Dupont, Stephane Leonard
  • Fuel tank
    Patent number: 6739350
    Abstract: Fuel tank comprising a canister containing a composition capable of retaining fuel vapours and which is associated with an overfill prevention device also located inside the tank.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: May 25, 2004
    Assignee: Solvay (Societe Anonyme)
    Inventors: Joël Op De Beeck, Yannick Gerard, Stéphane Leonard, Jules-Joseph Van Schaftingen, Paul Wouters, Rufino Perez-Perez
  • Fuel system for a vehicle
    Patent number: 6634342
    Abstract: Fuel system for a vehicle with a heat enigine, comprising a hollow body made of plastic, designed to contain or to transport fuel, and means of covering this hollow body by means of a rigid jacket surrounding the hollow body. The covering means form, with the surface of the hollow body, a confined space fitted with a device for flushing by means of air. The air which entrains any emitted vapours is purified before being discharged into the atmosphere or is mixed with the air blown out by the engine. The invention is applicable to a double jacket for a fuel tank made of plastic or to a fuel pipe fitted with a concentric channel.
    Type: Grant
    Filed: July 8, 2002
    Date of Patent: October 21, 2003
    Assignee: Solvay (Societe Anonyme)
    Inventors: Paul Wouters, Stéphane Leonard, Jules-Joseph Van Schaftingen, Joël Op De Beeck, François Dougnier, Yannick Gerard
  • Process for manufacturing hollow plastic bodies
    Publication number: 20010015513
    Abstract: Process for manufacturing hollow plastic bodies, especially motor-vehicle fuel tanks, from an extruded parison of closed cross section, in which at least one cut is made in the parison which is then formed by molding.
    Type: Application
    Filed: December 22, 2000
    Publication date: August 23, 2001
    Applicant: Solvay (Societe Anonyme)
    Inventors: Jules-Joseph Van Schaftingen, Yannick Gerard, Stephane Leonard, Serge Dupont, Joel Op De Beeck