Dealuminised nu-86 zeolite and its use in the conversion of hydrocarbons
CA 2271091 A1 · Owner: Chouteau, Nicolas · Inventors: Chouteau, Nicolas; Benazzi, Eric; Cauffriez, Herve
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a NU-86 zeolite containing silicon, and at least one element T selected from the group formed by aluminium iron, gallium and boron, preferably aluminium characterised in that the element T has been extracted from the structure and in that it has a global atomic Si/T greater than about 20. The extraction of the element T from the zeolite structure (or network) is effected by at least a thermal treatment. optionally carried out in the presence of water vapour followed by at least an acid attack, by at least a mineral or organic acid solution or by a direct acid attack. The invention also concerns a catalyst comprising said zeolite at least partly in acid form and the …
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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 10, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 10, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 2019.
- 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.