Patents by Inventor Nadine Andre

Nadine Andre 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).

  • Process for elementary analysis by optical emission spectrometry on plasma produced by a laser in the presence of argon
    Patent number: 5583634
    Abstract: A process for simultaneously blowing a gas jet onto a sample 6 to be analyzed and subsequently focusing a laser beam 4 onto the sample so as to produce a plasma 12 on the surface of the sample. An analysis is made of the spectrum S' of the light radiation emitted by the plasma and this spectrum analysis provides the basis for determining the composition of the isotopic composition of the sample.
    Type: Grant
    Filed: November 10, 1994
    Date of Patent: December 10, 1996
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Nadine Andre, Patrick Mauchien, Alexandre Semerok