Patents by Inventor Jean C. Raynal

Jean C. Raynal 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 of forming an electrode structure
    Patent number: 4738812
    Abstract: An array of electrodes is presented for accurate and improved measurement of borehole resistivity. Electrode structures and methods of formation thereof are also presented.
    Type: Grant
    Filed: November 12, 1982
    Date of Patent: April 19, 1988
    Assignee: Teleco Oilfield Services Inc.
    Inventor: Jean C. Raynal
  • Insulating segment for a drill string electrode structure
    Patent number: 4618828
    Abstract: An insulating segment for a drill string electrode structure is presented. The insulating segment of the drill string includes a drill string segment having a recess along an axial length thereof with a first sleeve of insulating material in the recess on the recessed surface of the drill string segment and a second sleeve of insulating material on the first sleeve of insulating material. The first end second sleeves of insulating material are of different hardnesses, with the second sleeve being harder than the first sleeve. A plurality of electrode are embedded in the second sleeve.
    Type: Grant
    Filed: November 12, 1982
    Date of Patent: October 21, 1986
    Assignee: Teleco Oilfield Services Inc.
    Inventor: Jean C. Raynal