Patents by Inventor Stephane Michau

Stephane Michau 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).

  • Ultrasonic method and device for volumetric examination of aluminothermic rail welds
    Patent number: 9816964
    Abstract: An ultrasonic non-destructive testing method and device for rail applications uses a plurality of phased array transducers to inspect aluminothermit weld defects located in a head portion, a web portion, an ankle portion, and a toe portion of a weld of a rail section. The method includes: scanning the head portion of the weld including: a first phased array transducer positioned above the weld and a second phased array transducer positioned a distance from the first phased array transducer to provide inclined access to the weld; and scanning the toe portion of the weld including: positioning pairs of third, fourth, and fifth phased array transducers on a surface of the toe portion, such that the pairs of third, fourth and fifth phased array transducers are disposed symmetrically with one of the pair on each side of the toe portion.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: November 14, 2017
    Assignee: Vermon S.A.
    Inventors: An Nguyen-Dinh, Stephane Michau, Christopher Spree, Simon-Peter Santospirito, Aasim Khalid