Integrated hydroponic and wetland wastewater treatment systems and associated methods
CA 2467771 A1 · Owner: Von Rohr, J. Rob · Inventors: Maciolek, David J.; Von Rohr, J. Rob; Austin, David C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The wastewater treatment systems having a plurality of treatment modules. Influent is directed to a covered anaerobic reactor (12) and then to an , attached growth pretreatment filter (15) that is at least intermittently exposed to oxygen. A first (18) and a second (18') hydroponic reactor follow the filter, and are followed by a verticalflow wetland (24).
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 November 14, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 14, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 14, 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
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.