Patents by Inventor Jacques Marti

Jacques Marti 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).

  • Device for evaluation of the lubricating charcteristics of a drilling mud
    Patent number: 5616842
    Abstract: Device for evaluation of the lubricating characteristics of a drilling mud, including a vessel (14) provided with an entry (52) and an exit (58) for a mud to be analysed, a measuring shoe (40) mounted inside the vessel (14) and intended to be set in rotation, and at least one measuring sensor capable of measuring the stresses generated during a contact between the shoe and an internal surface of the vessel. According to the invention the sensor is mounted inside the shoe.
    Type: Grant
    Filed: July 14, 1995
    Date of Patent: April 1, 1997
    Assignee: Elf Aquitaine Production
    Inventors: Jean-Francois Armengaud, Alain Martignon, Simeon Cortiade, Jacques Marti