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Expired Canadian patentCanada

Ore sorting apparatus with neutron activation and multi-stream detection

CA 1237695 A · Owner: United Kingdom Atomic Energy Authority · Inventors: Spackman, Ramon; Clayton, Colin G.

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

Ore Sorting Apparatus An apparatus for ore sorting includes a neutron irradiator, and a detector assembly for detecting gamma radiation emitted by irradiated lumps of the ore. The irradiated lumps after discharge from the irradiator, are divided into two channels by at least one bifurcating device held above a relatively high speed conveyor transporting the lumps. Each channel is subsequently divided into three streams by diverting selected lumps from the channel as the lumps are projected from the end of the high speed conveyor. The diverted lumps in each stream are allowed to fall on to a relatively low speed conveyor which then presents the lumps to the detector assembly.

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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 June 7, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 7, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 16, 1984
GrantedJune 7, 1988
Term endedJune 7, 2005
Patent numberCA 1237695 A
Classification (IPC)B07B1/00 +2 more

Timeline

Timeline From CIPO dates

1985198819911994199720002003Application filedMay 16, 1984Patent grantedJune 7, 1988Term endedJune 7, 2005

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