Moving-bed regeneration of hydrocarbon conversion with variable regeneration gas flow
CA 2002916 A1 · Owner: Koves, William J. · Inventors: Koves, William J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
MOVING-BED REGENERATION OF HYDROCARBON CONVERSION CATALYST WITH VARIABLE REGENERATION GAS FLOW" ABSTRACT, Spent hydrocarbon conversion catalyst is regenerated in a variable gas flow regeneration apparatus in which catalyst particles are confined in a verticallyelongated movable bed and therein contacted with a hot oxygen-containing gas stream in order to remove, by means of combustion coke which accumulated on, the catalyst particles while they were used in a hydrocarbon conversion zone. The catalyst particles are confined in the bed by means of catalyst retention screens. The catalyst retention screens are configured such that gas flow through the bedvaries from a maximum at the top of the …
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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 14, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 14, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 14, 2011.
- 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.