Method and plant for treating water incorporating a sedimentation tank and an multilayer filter operating at high speeds
CA 2294111 A1 · Owner: Otv Omnium De Traitements Et De Valorisation · Inventors: Sibony, Jacques; Le Poder, Nicolas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method for treating water to abate their content in suspended matter and as the case may be in parasites, characterised in that it consists in causing said water to pass through at least one sedimentation tank (1) at a treatment speed higher than 20 mph then through at least a multilayer filter with decreasing size grading (2) at a treatment speed higher than 10 mph. The sedimentation tank used is preferably a sedimentation tank with ballasted floc preferably lamellar.
Read the whole patent
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 20, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 20, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 20, 2020.
- 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.