Gamma ray spectral tool for well logging
CA 2183123 C · Owner: Core Laboratories, Inc. · Inventors: Baron, Emilio A.; Chisholm, John W.; Foreman, James R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A gamma ray spectral tool is provided that can be used in slick line systems. The tool includes a battery a controller, and a memory. In operation the tool compresses data from the spectral detector for storage in the memory allowing for long runs without the memory overflowing. Further a controller latches the self- adjusting stabilization feature of the spectral detector when gamma ray intensity exceeds a predetermined threshold preventing erroneous "stabilization" by the stabilization feature of the spectral detector.
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 August 12, 1996 and granted October 17, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 12, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 12, 2018.
- 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.