Patents by Inventor Pierre Larue

Pierre Larue 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).

  • Shielding gases for arc welding
    Patent number: 5313039
    Abstract: A shielding gas for flux cored arc welding. The specific gas combination is intended to promote significantly lower fume emission levels while providing equivalent or better welding performance.
    Type: Grant
    Filed: August 3, 1993
    Date of Patent: May 17, 1994
    Assignee: Canadian Liquid Air Ltd./Air Liquide Canada Ltee.
    Inventors: Grant Harvey, Jocelyn Turcot, Jean-Pierre Larue, Viwek V. Vaidya
  • Gases to be used for CO.sub.2 laser operation and process of operating with CO.sub.2 laser
    Patent number: 5073897
    Abstract: These gases, specially adapted to the need of CO.sub.2 lasers, have a total purity less than 99.995%, a water content lower than 5 vpm and a total hydrocarbon content lower than 5 vpm.
    Type: Grant
    Filed: April 13, 1990
    Date of Patent: December 17, 1991
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Jean-Pierre Larue, Bruno Marie, Christine Marot, Lahcen Ougarane, Philippe Van der Have
  • Gas and process for plasma arc cutting
    Patent number: 4611109
    Abstract: There is proposed as a plasma-producing gas, a gas containing the elements nitrogen and oxygen chemically combined in a nitrogen oxide and in particular nitrous oxide. These plasma-producing gases or mixture of gases stored in a bottle, a frame, a container, a tank, in the gaseous or liquid form at ambient or cryogenic temperature, are applicable to the plasma arc cutting of electrically conductive materials.
    Type: Grant
    Filed: March 5, 1985
    Date of Patent: September 9, 1986
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Jean-Pierre Larue, Georges Duboz, Claude Carsac, Gerard Marhic
  • Ignitor element for a generator of hot gas
    Patent number: 3961581
    Abstract: The igniter of the generator is constituted by a deformable plate of solid ropergol bound and fixed on a wooden or metal sleeve mandrel. The plate has open striae parallel to the axis of the support and oriented radially inwards or outwards. The device is useful as an initiator for a solid propergol rocket motor.
    Type: Grant
    Filed: April 30, 1975
    Date of Patent: June 8, 1976
    Assignee: Office National d'Etudes et de Recherches Aerospatiales (O.N.E.R.A.)
    Inventors: Pierre Larue, Pierre Beaumont