Flotation machine
CA 2064144 C · Owner: Niitti, Timo U. · Inventors: Kallioinen, Jouko O.; Niitti, Timo U.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a flotation machine for flotating minerals and the like from slurries containing these particles, the said flotation machine comprising a flotation cell and a mixer mechanism provided in the cell means for, introducing air into the cell and means for feeding the material to be flotated into the cell and for removing it therefrom. According to the invention, in the slurry chamber (2, 18) of the flotation machine essentially below the, foam bed (4, 21) created in the flotation machine there is, arranged at least one guide member (3 19, 32), so that the, free area of the flotation machine essentially at least in, the slurry chamber (2 18) below the foam bed (4, 21) can …
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 March 26, 1992 and granted September 15, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 26, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 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.