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Expired Canadian patentCanada

Continuous detinning system

CA 1093008 A · Owner: Mri Corporation · Inventors: Mccauslan, George L.; Read, Donald B.

CIPO record

Overview

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

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Abstract From the Canadian patent

This invention relates to the recovery of tin as tin metal from tin plate scrap on a continuous basis comprising continuously advancing shredded scrap through an electrically anodic perforated drum rotatable about a horizontal axis and partially but not completely immersed in a caustic solution in the absence of oxidizing agents, plating the tin content of said tin plate scrap upon cathodes disposed obversely and externally to said electrically anodic rotating drum arranged in a longitudinal row on the inside wall of a tank containing said caustic solution. The inventive apparatus comprises said perforated drum having an opening at one end for receiving material contact means for rend-, …

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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 January 6, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 6, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 29, 1976
GrantedJanuary 6, 1981
Term endedJanuary 6, 1998
Patent numberCA 1093008 A
Classification (IPC)C25C1/14 +1 more

Timeline

Timeline From CIPO dates

19771980198319861989199219951998Application filedJune 29, 1976Patent grantedJan 6, 1981Term endedJan 6, 1998

Sources & verification

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