Patents by Inventor Henri Tollet de Santerre

Henri Tollet de Santerre 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).

  • Method for recycling a carrier gas from the trapping system to the inlet of a gas chromatographic separation unit
    Patent number: 4230464
    Abstract: During the recycling operation, the carrier gas is subjected to a pre-purification prior to the conventional purification, the flow rate and the pressure of the carrier gas being maintained at strictly constant values at the inlet of the chromatographic unit. The method is primarily applicable to low-pressure gas chromatography and permits finer separations as well as higher productivity than atmospheric-pressure chromatography.
    Type: Grant
    Filed: December 13, 1978
    Date of Patent: October 28, 1980
    Assignees: Societe Nationale Elf Aquitaine, Societe de Recherches Techniques et Industrielles
    Inventors: Reynald Bonmati, Bernard Roz, Henri Tollet de Santerre