Patents by Inventor Geneviève Guillot

Geneviève Guillot 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 apparatus for preparing hyperpolarized helium gas at high pressure and application of the process
    Patent number: 6293111
    Abstract: A process for preparing hyperpolarized helium gas at high pressure including optical pumping at a resonant wavelength of about 1083 nanometers a helium gas formed by pure helium-3 isotope or by a mixture of helium-3 and helium-4 isotopes; and subjecting the helium gas to a magnetic field of about 0.01 to about 1 tesla during optical pumping and maintaining pressure higher than about 10 mbar and an apparatus for preparing a hyperpolarized helium gas at high pressure including a helium gas confinement cell; an excitation laser positioned to irradiate the helium gas; and means for generating a magnetic field of about 0.01 to about 1 tesla operatively connected to the confinement cell.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: September 25, 2001
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Jean-Pierre Nacher, Geneviève Tastevin, Luc Darrasse, Geneviève Guillot