A device for the separation of oil from water
CA 2199266 C · Owner: Schelin, Andreas · Inventors: Schelin, Andreas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a device for separation of oil from water containing impurities in industries waste plants, ships or the like. The device consists of an oil separation tank (I), which is tapering upwards and is provided with an inlet (1) and an outlet (2). In its lower part it is provided with airing means in the form of perforated pipes. In its upper part the tank is provided with steering plates (6). Raw water (3') containing oil (3') and light particles, is introduced in the inlet (1) of the tank (I), in which oil (3") and particles are lifted up to the surface by the addition of air bubbles from the airing means (4 and 5). The floating mass is flushed into an oil outlet pipe …
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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 4, 1996 and granted December 12, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 4, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 4, 2018.
- 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.