Ruggedized multi-layer printed circuit board based downhole antenna
CA 2693270 C · Owner: Hensarling, Jesse K. · Inventors: Hensarling, Jesse K.; Bittar, Michael S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is provided which comprises drilling a borehole using a bottomhole assembly comprising an electromagnetic wave resistivity measuring tool and performing azimuthally sensitive resistivity readings of a formation surrounding the borehole using the electromagnetic wave resistivity tool while drilling. Performing the azimuthally sensitive readings of the formation may further comprise imaging the borehole. As well a method is provided which comprises imaging a borehole using an electromagnetic radiation based resistivity tool.
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 September 18, 2003 and granted December 2, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 18, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 18, 2025.
- 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.