Use of cationic layered materials, compositions comprising these materials, and the preparation of cationic layered materials
CA 2491211 A1 · Owner: O'Connor, Paul · Inventors: Jones, William; O'Connor, Paul; Stamires, Dennis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Use of cationic layered materials in hydrocarbon conversion purification, and , synthesis processes such as fluid catalytic cracking. Cationic layered materials are especially suitable for the reduction of Sox and Nox emissions and the reduction of the sulfur and nitrogen content in fuels like gasoline and diesel. A new process is provided for the preparation of cationic layered materials, which process avoids the use of metal salts and does not require the formation of anionic clay as intermediate.
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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 June 24, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 24, 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.