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Expired Canadian patentCanada

Continuous, continental-shelf-scale monitoring of fish populations and behavior

CA 2611205 C · Owner: Massachusetts Institute Of Technology · Inventors: Makris, Nicholas C.; Ratilal, Purnima

CIPO record

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Abstract From the Canadian patent

Areal population density and detailed behavior of fish schools and their interaction are continuously monitored over continental-shelf-scale areas spanning thousands of square kilometers by ocean acoustic-waveguide remote sensing. In some embodiments, the capacity of certain geophysical environments, such as contininental shelves islands, etc. to behave as , acoustic waveguides is utilized; sound propagates over long ranges via trapped modes that suffer only cylindrical spreading loss rather than the spherical , loss suffered in conventional sonar approaches.

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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 June 7, 2006 and granted November 25, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 7, 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.
FiledJune 7, 2006
GrantedNovember 25, 2014
Term endedJune 7, 2026
Patent numberCA 2611205 C
Classification (IPC)G01S15/96

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedJune 7, 2006Patent grantedNov 25, 2014Term endedJune 7, 2026

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