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Expired Canadian patentCanada

Process for treating scrap anodes and apparatus therefor

CA 1189021 A · Owner: Copper Refineries Pty Ltd. · Inventors: Tokunaga, Koichi; Tsurimoto, Hidetoshi; Schonfeldt, Martin K.

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

A process for handling scrap anodes comprising the steps of transporting scrap anodes, which are suspended vertically from a pair of rails with their shoulder portions mounted upon the rails by means of lugs projecting at, intervals along a chain conveyer. The rails are positioned below the chain conveyer and the lugs contact the anodes on the rails. The lower ends of the scrap anodes are pushed upwardly by means of a rotating plate during transportation so that the scrap anodes take a nearly horizontal position the, rotating plate being disposed under the rails and being adapted for vertical rotation. The scrap anodes are then moved onto a supporting means provided adjacent to the rails …

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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 18, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 18, 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.
FiledNovember 18, 1980
GrantedJune 18, 1985
Term endedJune 18, 2002
Patent numberCA 1189021 A
Classification (IPC)C25C7/06 +2 more

Timeline

Timeline From CIPO dates

19811984198719901993199619992002Application filedNov 18, 1980Patent grantedJune 18, 1985Term endedJune 18, 2002

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