Core orientation system
CA 1306457 C · Owner: Foster, William B. · Inventors: Foster, William B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A core orientation device for determining the in situ orientation of core samples taken during a drilling process. A sampling tube having a plurality of equispaced slots formed longitudinally on its sidewall permits the scribing of a longitudinal line on a core sample within the sampling tube. The slots for indicating the position of the core within the sampling tube, a test tube with etch mark to indicate the top point or position of the etch mark within the test tube and a connector for relating the said top point on the test tube to the longitudinal slots on the sampling tube sidewall permit determination of the in situ position of the core sample.
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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
- Granted August 18, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 18, 2009.
- 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.