Process and plant for ultrapurifying fumes or gasses
CA 2500237 A1 · Owner: Tognazzo, Valerio · Inventors: Tognazzo, Valerio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for ultrapurifying fumes or gases with total recovery of the resultant pollutants, characterised by: subjecting a stream of pollutantcontaining fumes or gases to a sprinkle wash by unpolluted water within a snow producer (20) and subjecting the water during its passage, to rapid cooling , to a temperature sufficient to transform it into snow flakes which along , their path collect the pollutants present in the stream of fumes or gases discharging from said snow producer (20) said snow flakes which have reached the base thereof, and feeding to a gasifier (56) the resultant polluted water deriving from said snow flakes.
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 26, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 26, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 26, 2025.
- 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.