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Expired Canadian patentCanada

Conical concentrator with partial flow combination

CA 1065799 A · Owner: Mineral Deposits Limited · Inventors: Giffard, Philip J.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Abstract of the Disclosure, Apparatus is provided for the wet gravity concentration of particulate ores wherein the required or value particles have a specific gravity that is higher than that of those of the remaining or unwanted particles. Upper and lower substantially concentric downwardly convergent cones have their axes substantially vertical with upper and lower splitters being located at the apex region of the upper and lower cones respectively. Each splitter divides a wet stream of particulate ore flowing downwardly over the upper surface of its respective cone into a concentrated stream that flows through one or more apertures and a less concentrated stream that flows over the …

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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

  • Granted November 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 6, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedNovember 6, 1979
Term endedNovember 6, 1996
Patent numberCA 1065799 A
Classification (IPC)B03B5/00 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedNov 6, 1979Term endedNov 6, 1996

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.