Improved method of biological cleaning of contaminated gas flow
CA 2309787 A1 · Owner: Van Lith, Christianus Petrus Maria · Inventors: Van Lith, Christianus Petrus Maria
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for biological cleaning of a gas flow containing, gaseous and/or particulate contaminants comprising the steps of contacting the contaminated gas flow counter-currently with a jet of suitable microorganisms containing scrubbing liquid in order to enhance absorption of gaseous and particulate, contaminants in the said scrubbing liquid; recovering the scrubbing liquid in a vessel;, and draining part of said scrubbing liquid off said vessel and compensating said drained, part with fresh liquid. The method is carried out in a reversed jet scrubber and does not, use any packing material for support to the microorganisms.
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 May 26, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 26, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 26, 2022.
- 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.