Patents by Inventor Jean Rouquerol

Jean Rouquerol 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).

  • Apparatus, application and method of making a gas flow regulator operating at a very low flow rate and at sonic velocity for measuring gaseous adsorbtion and desorbtion
    Patent number: 4967591
    Abstract: The gas flow regulator apparatus of the invention comprises a tube made of ductile metal which is crushed over a short portion of its length so that the inside wall of said tube makes contact with itself, and the tube is mounted in connection means for providing sealing around the tube and for mounting it in any equipment for measuring gaseous adsorbtion and desorbtion, in such a manner that the tube ensures that the equipment is continuously fed with gas at a very low flow rate lying in the range 0.025 mm.sup.3 /sec to 25 mm.sup.3 /sec at sonic velocity and regardless of any varying back pressure.
    Type: Grant
    Filed: August 7, 1989
    Date of Patent: November 6, 1990
    Assignee: Centre National de la Recherche Scientifique-C.N.R.S.
    Inventors: Jean Rouquerol, Lou J. Davy