Continuous process for deasphalting and demetallating a residue from crude oil distillation
CA 2063101 A1 · Owner: Cimino, Roberto · Inventors: Meli, Salvatore; Cimino, Roberto; Savastano, Cesar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
CASE 3391, "CONTINUOUS PROCESS FOR DEASPHALTING AND DEMETALLATING A RESIDUE FROM CRUDE OIL DISTILLATION" Abstract, A continuous process for deasphalting and demetallating a residue from crude oil distillation by, means o-f dimethyl carbonate as extraction solvent comprises:, - mixing a residue from crude oil distillation with a recycled liquid stream containing oil and dimethyl carbonate, in order to produce a homogeneous solution;, - cooling said homogeneous solution and separating a refined light, liquid, phase; an extracted middle phase; and a heavy phase containing asphaltenes; - recovering a primary, deasphalted/demetallated oil from said light phase;, - partially recycling said middle …
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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 March 16, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 16, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 16, 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
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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.