Crystalline aluminosilicates: uzm-13, uzm-17, uzm-19 and uzm-25
CA 2539677 C · Owner: Lewis, Gregory J. · Inventors: Lewis, Gregory J.; Knight, Lisa M.; Miller, Mark A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A series of crystalline aluminosilicate compositions have been prepared. These compositions have a layered structure and are identified as UZM- 13 UZM- 17 , and UZM- 19. Upon calcination at a temperature of 400 ~C to 600 ~C these , compositions form a microporous crystalline zeolite with a three dimensional framework which has been identified as UZM-25. A process for preparing all these compositions and processes for using these compositions are also disclosed.
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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 September 20, 2004 and granted August 28, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 20, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 20, 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.