Patents by Inventor Denis Larrue

Denis Larrue 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).

  • Spectacle frame with elements of superelastic alloy
    Patent number: 6168272
    Abstract: The invention concerns a frame for spectacles comprising at least one element made of polycrystalline copper—aluminum—beryllium (Cu—Al—BE) of elasticity between 3 and 6%, preferably of the order of 4%. The polycrystalline alloy composition is 0.5% to 1% of beryllium, 11% to 12% of aluminum, the remainder being copper. The polycrystalline alloy average grain size is less than 0.12 mm. The Cu—Al—BE element is formed by several shrinking operations not exceeding deformation of {fraction (1/100)} th of a millimeter per passage, or 40% of clod shrinking, followed by thermal beta treatment or directly by hot-forming.
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: January 2, 2001
    Assignee: A. Lu. Tec. Association Lunetiere Technologique
    Inventor: Denis Larrue