Patents by Inventor Roger Doussiet

Roger Doussiet 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).

  • Cell for sampling and storing fluid deposits
    Patent number: 5024110
    Abstract: The rear face of the piston (7) and the corresponding inner face of the pump body (1,2,3,4) are complementarily shaped so as to make the volume of the rear chamber (31) of the cell as small as possible, and, when the cell is in the storing position, the unit of the two front (32) and rear (31) chambers is insulated from the outside by a high-efficiency seal (3a,6a) which is formed automatically when the piston (7) arrives in the storing position.Measurements of the thermodynamic characteristics of the fluid deposits.
    Type: Grant
    Filed: January 8, 1990
    Date of Patent: June 18, 1991
    Assignee: Societe Nationale Elf Aquitaine (Production)
    Inventors: Roger Doussiet, Louis Labadie
  • Permeameter
    Patent number: 4671100
    Abstract: A process and apparatus for measuring the permeability of solid samples involves applying a constant differential pressure between the end faces of a sample disposed in a measuring cell, introducing a pressurized gas into the sample for a specified time, measuring the fluid flow rate, and then calculating the permeability of the sample by applying Darcy's law.
    Type: Grant
    Filed: April 14, 1986
    Date of Patent: June 9, 1987
    Assignee: Societe Nationale Elf Aquitaine (Production)
    Inventor: Roger Doussiet