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Expired Canadian patentCanada

Clearance measurement system and method of operation

CA 2555480 C · Owner: Andarawis, Emad A. · Inventors: Balasubramaniam, Mahadevan; Anderson, Todd A.; Shaddock, David M.

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Abstract From the Canadian patent

A clearance measurement system (12) is provided. The clearance measurement system (12) includes a reference geometry (86) disposed on a first object (14) having an otherwise continuous surface geometry and a sensor (64) disposed on a second object (16) wherein the sensor (64) is configured to generate a first signal representative of a first sensed parameter from the first object (14) and a second signal representative of a second sensed parameter from the reference geometry (86). The clearance measurement system (12) also includes a processing unit (198) configured to process the first and second signals to estimate a clearance between the first and second objects (14 16) based upon a …

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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 4, 2006 and granted April 21, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 4, 2026.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 4, 2006
GrantedApril 21, 2015
Term endedAugust 4, 2026
Patent numberCA 2555480 C
Classification (IPC)G01B21/16 +2 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedAug 4, 2006Patent grantedApril 21, 2015Term endedAug 4, 2026

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