Surfactant for enhanced oil recovery and for reducing the viscosity of heavy oil in pipelines and pumps
CA 2326288 A1 · Owner: Fornes, Adriana · Inventors: Najurieta, Humberto L.; Fornes, Adriana
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A surfactant for enhanced oil recovery and capable of reducing viscosity of heavy oils in, pipelines or pumps, comprising polyisobutilene of 6 to 9 carbon atoms mixed With 1 to 50, weight percent of at least one member of the group consisting of etoxi alcohols, nonylphenols and/or polyethylene glycols. A method is also provided for the enhanced, recovery of oil employing said surfactant.
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 November 17, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 17, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 17, 2022.
- 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.