The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 08, 1997
Filed:
Dec. 11, 1995
Marcel Locatelli, Montbonnot, FR;
Jean-Jacques Chaillout, St. Etienne de Crossey, FR;
Michel Brochier, Jarrie, FR;
Abstract
A device for induction measurement of a medium adjacent a cylindrical, metallic, magnetic walled well of a well casing includes at least two magnetic circuits for magnetically saturating the metallic wall. Each of the magnetic circuits has a plate-like central portion, situated between two lateral portions, each of which lateral portions has a lateral end which comes into contact with the wall, along a zone parallel to the cylindrical axis of the wall. After magnetic saturation of the metallic wall, an induction signal is induced into the medium beyond the metallic wall and retransmitted by the medium in response to the induction signal.