Patents by Inventor Olivier Lesage

Olivier Lesage 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 and system for plasma-induced selective extraction and recovery of species from a matrix
    Patent number: 11692239
    Abstract: The invention relates to a process for selectively and continuously extracting a series of desired species from a matrix, comprising the steps of:—injecting a plasma (310) in an extraction chamber by means of a plasma torch,—continuously monitoring (320) the excited elements extracted from the matrix and contained in the plasma by optical emission spectroscopy, and for each species of the series,—setting a distance (330) between the support and the plasma torch, and the composition of the injected plasma as a function of the monitored excited elements so that only one desired species of the series of species is being extracted from the matrix under molecular form, and—providing (400) a plate in the extraction chamber, exterior to the plasma, causing collection of molecules comprising said desired species by deposition onto the surface of the plate.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: July 4, 2023
    Inventors: Frédéric Rousseau, Olivier Lesage, Jonathan Cramer, Frédéric Prima, Daniel Morvan
  • Process And System For Plasma-Induced Selective Extraction And Recovery Of Species From A Matrix
    Publication number: 20190136341
    Abstract: The invention relates to a process for selectively and continuously extracting a series of desired species from a matrix, comprising the steps of:—injecting a plasma (310) in an extraction chamber by means of a plasma torch,—continuously monitoring (320) the excited elements extracted from the matrix and contained in the plasma by optical emission spectroscopy, and for each species of the series,—setting a distance (330) between the support and the plasma torch, and the composition of the injected plasma as a function of the monitored excited elements so that only one desired species of the series of species is being extracted from the matrix under molecular form, and—providing (400) a plate in the extraction chamber, exterior to the plasma, causing collection of molecules comprising said desired species by deposition onto the surface of the plate.
    Type: Application
    Filed: June 8, 2017
    Publication date: May 9, 2019
    Applicants: Paris Sciences Et Lettres - Quartier Latin, Centre National de la Recherche Scientifique (CNRS)
    Inventors: Frédéric Rousseau, Olivier Lesage, Jonathan Cramer, Frédéric Prima, Daniel Morvan