Method of operating a plurality of minerals separation flotation cells
CA 2044598 A1 · Owner: University Of Newcastle Research Associates Limited (The) · Inventors: Jameson, Graeme J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A method of operating a plurality of minerals separation flotation cells (1,2) by using a feed box (3) for the slurry feed (6) and connecting the feed box in series via pumps (8, 13). A proportion of the gangue from each cell is recycled via connections (20) to the feed box. The proportion of gangue recycled is controlled by the pumping rate of each pump (8, 13).
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 July 26, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 26, 2012.
- 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.