Method and device for treating hydrophilic sludge by hydraulic turbulence effect combined with oxidation and chemical reactions by additive input
CA 2468037 C · Owner: Nemeau · Inventors: Brisset, Herve
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a device for treating sludge and slime to enable reuse in soil upgrading and in building material systems. The invention concerns a method for continuously treating hydrophilic sludge and slime having a water content not less than 70 % which enables colloid removal dehydration, oxidation, sanitation, stabilization mineralization, filtration and porosification of sludge and slime. The invention also concerns a device for continuously treating hydrophilic sludge and slime having a water content not less than 70 % characterized in that it comprises a hollow caisson run through in the longitudinal direction by the treated product and provided with at least an intake (1) …
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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 November 22, 2002 and granted December 11, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 22, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 2024.
- 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
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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.