Hydrotreating catalyst for heavy oil, carrier for the catalyst, and process for the preparation of the catalyst
CA 2306947 A1 · Owner: Japan Energy Corporation · Inventors: Matsushita, Koichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hydrotreating catalyst for heavy oil comprising an alumina carrier and both a Group 6 metal component and a Group 9 or 10 metal component supported on the carrier. The alumina carrier contains 0.5 to 20 wt.% (based on the catalyst) of silica, which is dispersed therein in the form of silica particles having a mean particle diameter of 0.05 to 1 µm. The catalyst has a pore diameter distribution of pore diameters of 600 .ANG. or below and a median pore diameter of 70 .ANG. to less than 150 .ANG.. The catalyst exerts excellent desulfurization and denitrification characteristics for a long period when used in hydrotreating hydrometallized heavy oil.
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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 October 14, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 14, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 14, 2020.
- 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.