Magnetic separation process
CA 2068940 A1 · Owner: Van Der Meer, Frank Peter · Inventors: Notebaart, Cornelis Wilhelmus; Van Der Meer, Frank Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a process for separating relatively magnetic mineral particles Pm having magnetic susceptibilities X with Xm > O from, relatively non-magnetic particles P having magnetic, susceptibilities Xn, with Xm > Xn all said particles are suspended, in a liquid stream which is supplied to a separating container. Said container is provided with an inlet and an outlet and forms a passageway for said stream therebetween. Furthermore an arrangement of magnetizable matrix elements provided in said passageway is magnetized. Said supplying and magnetizing are conditioned in such a way, that depositions of particles are obtained predominantly upon the downstream side of said elements. From all said …
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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 May 19, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 19, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 19, 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.