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Expired Canadian patentCanada

Regulating quantity of metal electrolytically deposited on travelling band

CA 1308686 C · Owner: Usinor Aciers · Inventors: Backelandt, Bernard; Piquet, Daniel; Gythiel, Jean-Claude

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Abstract From the Canadian patent

Process for regulating the quantity of metal electrolytically deposited on a continuously travelling band to be coated in a coating plant comprising a plurality of tanks filled with electrolyte. In each tank there is a conductive bridge carrying anode forming metal bars. The process comprises determining experimental curves of the yield as a function of the strength of the supply current at each bridge of the plant and, collecting indications relating to which bridges are in operation and which out of operation, analog values of the current strength for each bridge and of the maximum strength of the current for all of the bridges are established. The velocity of the travel of the band is …

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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 October 13, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 13, 2009.
  • 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, 1986
GrantedOctober 13, 1992
Term endedOctober 13, 2009
Patent numberCA 1308686 C
Classification (IPC)C25D21/12

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedNov 18, 1986Patent grantedOct 13, 1992Term endedOct 13, 2009

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