Patents by Inventor Raymond Marcel

Raymond Marcel 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).

  • Isotope separation apparatus and process
    Patent number: 4427424
    Abstract: An apparatus and process are disclosed for separation of isotopes by gaseous diffusion. The apparatus comprises at least one assembly of microporous capillary tubes having a hydraulic diameter below 0.5 cm, an average pore radius below 200 .ANG., a thickness between 20 and 500 microns, a length of at least 25 cm, a porosity between 10 and 60% and a permeability to air between 10.10.sup.-7 and 100.10.sup.-7 mole/cm/.sup.2 /min/cm of mercury. The tubes are made from an inorganic material and have a circular, square or rectangualr cross-section.
    Type: Grant
    Filed: December 2, 1980
    Date of Patent: January 24, 1984
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Jean Charpin, Bernard LaRat, Raymond Marcel, Pierre Plurien