Method for demetallating petroleum streams
CA 2294311 A1 · Owner: Greaney, Mark A. · Inventors: Olmstead, William N.; Greaney, Mark A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of decreasing the metals content of metal containing petroleum streams (4) by forming a mixture of the petroleum fraction containing those metals and an aqueous electrolysis medium containing electron transfer agent and passing an electric current through the mixture or through the pretreated aqueous electrolysis medium at a voltage sufficient to remove the metals such , as Ni V and Fe from the stream (3) (i.e. to produce a petroleum fraction having decreased content of the metals). The cathodic voltage is from 0 V to - 3.0 V vs. SCE. The invention provides a method of enhancing the value of petroleum feeds that traditionally have limited use in refineries due to their …
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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 14, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 14, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 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
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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.