Regenerative process and system for the simultaneous removal of particulates and the oxides of sulfur and nitrogen from a gas stream
CA 2055932 A1 · Owner: Cohen, Mitchell R. · Inventors: Gal, Eli; Cohen, Mitchell R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Dkt. No. 46-DV-2062, ABSTRACT OF THE DISCLOSURE A process and system for simultaneously removing from a gaseous mixture, sulfur oxides by means of a solid sulfur oxide acceptor on a porous carrier nitrogen oxides by, means of ammonia gas and particulate matter by means of filtration and for the regeneration of loaded solid sulfur oxide acceptor. Finely-divided solid sulfur oxide acceptor is entrained in a gaseous mixture to deplete sulfur oxides from the gaseous mixture, the finely-divided solid sulfur oxide acceptor being dispersed on a porous carrier material having a particle size up to about 200 microns. In the process the, gaseous mixture is optionally pre-filtered to remove …
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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 21, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 21, 2013.
- 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
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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.