Patents by Inventor Giovanni Michele Macchi

Giovanni Michele Macchi 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).

  • Method and apparatus for measuring spalling of a protective surface
    Patent number: 5916811
    Abstract: The present invention relates to a method and apparatus for quantitative determination of the level of spalling of a protective surface coating as a result of repetitive heating and cooling. The method comprises introducing at least one radionuclide into the protective coating of an article, alternately heating and cooling the article for a predetermined number of heating and cooling cycles, collecting the spalled particles and measuring the radioactivity thereof. The apparatus comprises a chamber for receiving the coated article, means for heating the chamber or the article and a spall collector. The spall collector is characterized in having means for immobilizing any spalled coating particles and in being so adapted that the level of radioactivity of any spalled particles can be measured by a .gamma.-spectrometer.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: June 29, 1999
    Assignee: European Economic Community
    Inventors: Marinus Freder Stroosnijder, Giovanni Michele Macchi