Treatment of slop oils
CA 1293468 C · Owner: Alberta Alkali Petroleums Limited · Inventors: Kessick, Michael A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Slop oils, both refinery and field are treated to, recover oil therefrom. The water-in-oil emulsion of the slop oil first is inverted to an oil-in-water emulsion by contact with a non-ionic surfactant and oil is removed from the oil-in-water emulsion.
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
- Granted December 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 24, 2008.
- 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.