Method and device for removing harmful substances, in particular dioxin
CA 2255802 A1 · Owner: N.V. Avira Afvalverwerking · Inventors: Uitvlugt, Martin Gerardus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for removing harmful substances in particular dioxin, from flue gas , generated in for example a waste incinerator using an adsorption agent, characterized in that after said flue gas has been washed with a washing medium, the adsorption agent is discharged together with the washing medium for subsequent collectionof the adsorption agent. At least one of the substances from the group of active carbon brown coal, coke, lime, lava rock , and pumice stone is used as the adsorption agent.
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 February 13, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 13, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 13, 2019.
- 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.