Process for treating waste water
CA 2282223 A1 · Owner: Ennis, Jerry D. · Inventors: Ennis, Jerry D.; Campbell, Bryan A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for treating bacteria laden effluent from a sewage treatment digester to condition the effluent for release into the environment includes the steps, of thoroughly mixing the effluent with a bactericide conveying the mixed , effluent, to a reaction zone to completely kill any bacteria entrained in the waste water to, provide a substantially bacteria free effluent mixing an oxidant with the , bacteria, free effluent maintaining the mixture for a sufficient time to permit substantially, complete oxidation and neutralization of entrained bactericide and , discharging the, treated effluent into the environment. In an alternative procedure the treated effluent is passed through 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 September 15, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 15, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 15, 2021.
- 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.