Aluminosilicates of zeolite n structure
CA 2521388 C · Owner: Nanochem Holdings Pty Ltd. · Inventors: Stolz, Wanda; Mackinnon, Ian; Millar, Graeme
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for making aluminosilicates of zeolite N structure comprising the steps of: (i) combining a water soluble monovalent cation a solution of , hydroxyl anions and an aluminosilicate to form a resultant mixture having a pH greater than 10 and a H2O/Al203 ratio in the range 30 to 220; (ii) heating the resultant mixture to a temperature of between 50oC and the boiling point of the mixture for a time between 1 minute and 100 hours until a crystalline product of zeolite N structure is formed as determined by X-ray diffraction or other suitable characteristic; and (iii) separating the zeolite N product as a solid from the mixture.
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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 April 2, 2004 and granted May 22, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 2, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 2, 2026.
- 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.