Method and device for treating a heavily loaded liquid effluent in particular with nitrogen and with phosphorus
CA 2304832 A1 · Owner: Joly, Claude · Inventors: Joly, Claude
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 comprising: a mixing reactor for contacting the liquid effluent with the basic reagent provided with an intake for said effluent and another intake for the basic reagent; an ammonia-extracting reactor (1) connected to said mixing reactor; and a tank for storing the treated liquid effluent derived from the ammonia-extracting reactor (1). The invention is for example, applicable to pig slurry.
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 September 3, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 3, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 3, 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.