Froth flotation apparatus and method
CA 1185708 A · Owner: Black Clawson Company (The) · Inventors: Cruea, Ronald D.; Markham, Larry D.; Kile, Gregory D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A froth flotation apparatus for elimination of solid particle impurities contained within a liquid includes a sparger (42) having a substantially cylindrical porous element (46) mounted on a tubular shaft (48) which is rotatably mounted within the inlet conduit (20) of the apparatus and driven by a motor. Compressed air is forced through the porous element to aerate fluid entering the apparatus.
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
- Granted April 16, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 16, 2002.
- 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.