Treatment of emulsions
CA 1320139 C · Owner: Memtec Limited · Inventors: Ford, Douglas Lyons
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A filtration system for treating an emulsion containing water, an oil or a fat, an emulsifying agent and insoluble solid material (such as a maritime oil emulsion containing an anionic detergent and the solid greasy, calcium salt of the detergent) has a first hydrophobic microfilter and a second hydrophobic microfilter. Both microfilters have a plurality of hollow porous fibres as the separating medium with the feed to the first filter being applied to the outside of the fibres and the feed to the second filter (which is the permeate from the first filter) being applied down the lumens of the fibres. The first filter removes the solid material and the second filter separates the oil or fat …
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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
- Granted July 13, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 13, 2010.
- 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.