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Expired Canadian patentCanada

Process for treating a body of water

CA 2512783 C · Owner: Tvt Us Corporation · Inventors: Costantini, Darrin J.; Lagasse, Daniel J.; Hausin, Volker A.

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A process for treating a body of water in which a bioreactor and a water eductor are located in a body of water such that the eductor is submerged beneath the body of water to a depth of at least about 3 feet. The water eductor produces a water flow at a rate of at least about 60 feet per minute; the water flow is substantially parallel to the surface of the body of water. Water is also passed through a bioreactor that contains a plurality of biosuspension elements within an enclosure located above a screen in the enclosure.

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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 January 5, 2004 and granted October 2, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 5, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 5, 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.
FiledJanuary 5, 2004
GrantedOctober 2, 2012
Term endedJanuary 5, 2024
Patent numberCA 2512783 C
Classification (IPC)C02F3/06 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedJan 5, 2004Patent grantedOct 2, 2012Term endedJan 5, 2024

Sources & verification

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