Method of removing and recovering hydrocarbons from hydrocarbon/water mixtures
CA 2060158 A1 · Owner: Marathon Oil Company · Inventors: Shoemaker, D. Dennis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A method for removing and recovering hydrocarbons contained in hydrocarbon/water mixtures. Hydrocarbons are stripped from nonflowing hydrocarbon/water mixtures in a tank by bubbles of inert gas, such as air introduced under pressure. The air and hydrocarbons are vented from the tank and the water is removed from the tank when satisfactorily purified. The material in the tank preferably is heated. A two-tank process may be used wherein the second tank is filled while the stripping process in the first tank is taking place. The rate of flow of the inert gas is maintained at a low enough rate to allow recovery of product. RH
Read the whole patent
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 January 28, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 28, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 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
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.