Catalytic conversion of gases via cation-exchangeable alumino-silicate materials
CA 2294394 A1 · Owner: Millar, Graeme John · Inventors: Mackinnon, Ian Donald Richard; Millar, Graeme John; Henville, Kim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for catalytic conversion and/or adsorption of gases inclusive of NOx, SOx, CO2, CO, dioxins and PAHs and combinations thereof wherein said gases may contain particulates which include contacting one or more of such gases with an alumino-silicate material having: (i) a primarily tetrahedrally co-ordinated aluminium as established by the fact that the 27Al Magic Angle Spinning (MAS) provides a single peak at 55-58 ppm (FWHM = 23 ppm) relative to Al(H2O)63+; and (ii) a cation exchange capacity of at least 1 meq 100 g-1 in aqueous solution at room temperature.
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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 July 15, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 15, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 15, 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.