Supported high silica zeolites
CA 2020482 C · Owner: Suppiah, Sellathurai · Inventors: Suppiah, Sellathurai
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for applying a highly crystalline form of silica, for example Silicalite, to a supporting structure with a small thermal mass, such as a screen or a metal surface is described. A slurry of finely-divided high silica zeolite and a silicone or polytetrafluoroethylene binder is coated onto the support structure. Optionally a noble, catalyst is applied to the high silica zeolite either before or after the high silica zeolite is coated onto the support structure. The support structures coated according to this process can be used to catalyze flameless combustion of hydrogen or hydrocarbon gases with suitable amounts of air or oxygen if a noble metal catalyst is applied or as an, …
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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 5, 1990 and granted October 12, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 5, 2012.
- 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.