Patents by Inventor Charles Soulier

Charles Soulier 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).

  • Cylindro-conical pipe joint
    Patent number: 4398756
    Abstract: Separable joint for oil well pipe in which both the male and female members have a cylindrical threaded section adjacent a frusto-conical thread section, and the female member has an internal shoulder against which the end of the male member seals.
    Type: Grant
    Filed: November 13, 1981
    Date of Patent: August 16, 1983
    Assignee: Vallourec, S. A.
    Inventors: Jean Duret, Charles Soulier, Georges Trouillet