Method and apparatus for communicating data in a wellbore and for detecting the influx of gas
CA 2130282 C · Owner: Leggett, James V. Iii · Inventors: Patel, Ashok (Nmi); Owens, Steven C.; Rorden, Louis H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a borehole acoustic communication system. The apparatus of the invention comprises a first transceiver at a first communication node and a second transceiver at a second communication node. The data is transmitted in a wellbore between the first transceiver and the second transceiver through a communication channel.
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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 August 17, 1994 and granted May 13, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 17, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 17, 2016.
- 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.