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Expired Canadian patentCanada

Geosteering detectors for boring-type continuous miners

CA 2534439 C · Owner: Frederick Mining Controls, Llc · Inventors: Medley, Dwight; Frederick, Larry D.

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Abstract From the Canadian patent

The invention provides, in one embodiment a detector for a miner comprising a , gamma sensing element and a light sensing element coupled to the gamma sensing element. According to the embodiment, the detector is mounted on a rotary cutter of a boring-type continuous miner such that the gamma sensing element has a view of a geologic formation being mined. A mining control system is also provided, comprising a miner having at least two rotary cutters and a gamma detector on each of the at least two rotary cutters for receiving gamma emissions from a geologic formation. The mining control system also provides an accelerometer and a rate gyro, wherein the accelerometer and the rate gyro …

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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 July 29, 2004 and granted February 26, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 29, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 29, 2004
GrantedFebruary 26, 2013
Term endedJuly 29, 2024
Patent numberCA 2534439 C
Classification (IPC)G01B15/00 +1 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedJuly 29, 2004Patent grantedFeb 26, 2013Term endedJuly 29, 2024

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.