An electromagnetic probe
CA 2598487 C · Owner: Budan, Henri · Inventors: Hizem, Mehdi; Simon, Matthieu; Mosse, Laurent
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electromagnetic probe 1 measures the electromagnetic properties of a subsurface formation GF in a limited zone surrounding a well-bore hole WBH. The well-bore hole is filled with a well-bore fluid DM. The probe comprises a pad 2 having a first face defining a first area arranged to be positioned in contact with a well-bore wall WBW. The probe 1 further comprises: at least two transmitting antennas 4A, 4B defining a central point CP between them each , antenna being spaced from a distance do from the central point and at least a , first 5A, 5B and a second set 5C 5D of receiving antennas, each set , comprising a first receiving antenna 5A; 5C and a second receiving antenna 5B; 5D, …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed January 27, 2006 and granted October 11, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 27, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.