Patents by Inventor Philippe Julliat

Philippe Julliat 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 application for the determination of turbidity and flow points
    Patent number: 4770540
    Abstract: Process for the determination of the turbidity point of a liquid, which consists in progressively cooling the liquid and noting the temperature at which turbidity appears; the temperatures at the center (T.sub.1) and at the periphery (T.sub.2) of the liquid are measured, their graphs as a function of time (.theta.) are plotted and changes in the slope of these graphs are noted, the turbidity point being the temperature (T.sub.1) at the center of the liquid which corresponds to the change in slope on the graph T.sub.2 -.function.'(.theta.).
    Type: Grant
    Filed: August 20, 1986
    Date of Patent: September 13, 1988
    Assignee: Societe Anonyme Elf France
    Inventors: Benoit Chague, Serge Esson, Philippe Julliat