Patents by Inventor Maurice Gachet

Maurice Gachet 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).

  • Patent number: 5627910
    Abstract: The invention is a process for inspecting chips and/or fragments of metal or metal alloy to eliminate from them inclusions of a more X-ray absorbent material than the metal or alloy, wherein a field that delimits a portion of these chips and/or fragments is X-rayed. The process produces an X-ray image which is then converted into an electronic image. This image is analyzed in order to detect the inclusion(s) having features. The features include a background correction of the degree of illumination of each pixel in the field in the absence of chips and/or fragments, a field is covered with the portion of chips and/or fragments, and the electronic image is corrected by subtracting the background correction from the degree of illumination of each of its pixels, and the portion of chips and/or fragments is rejected if this corrected image contains at least one relative pixel corresponding to a chosen condition.
    Type: Grant
    Filed: June 28, 1994
    Date of Patent: May 6, 1997
    Assignee: Compagnie Europeenne Du Zirconium Cezus
    Inventors: Maurice Gachet, Thierry Ancillon