Countercurrent hydroprocessing
CA 2467094 A1 · Owner: Shell Internationale Research Maatschappij B.V. · Inventors: Roovers, Antonius Adrianus Maria
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method for the hydroprocessing of a heavy hydrocarbonaceous feedstock in a reaction zone (10) comprising a bed (11) containing a fixed array of porous catalyst particles by contacting the feedstock with a hydrogen-containing gas under conditions which allow distributing the feedstock predominantly in liquid phase under superatmospheric process conditions at elevated temperature over the catalyst bed (11) for downward flow in contact with the catalyst particles and introduction of the hydrogen-containing gas in the reaction zone (10) below the catalyst bed (11) in order to establish countercurrent contact of the upwardly flowing gas with the downcoming liquid and withdrawing treated …
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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 15, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 15, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 15, 2024.
- 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.