Demetallation of hydrocarbon feedstocks with a synthetic mesoporous crystalline material
CA 2112263 C · Owner: Landis, Michael E. · Inventors: Landis, Michael E.; Kresge, Charles T.; Keville, Kathleen M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided a process far demetallizing hydrocarbon feedstocks such as , resids or shale oil. The process uses a catalyst comprising at least one hydrogenation metal; such as nickel and molybdenum; and an ultra-large pore oxide material. This ultra-large pore oxide material may have uniformly large pores e.g. having a , size of 40 nm in diameter.
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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 23, 1992 and granted July 1, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 23, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 23, 2014.
- 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.