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Expired Canadian patentCanada

Self-baking electrode with pressure advancement

CA 1310048 C · Owner: Black, James M. · Inventors: Stanley, Earl K.; Black, James M.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A self-baking electrode includes a pressure chamber for receiving electrode paste under pressure. A centrally located conductor supplies electrical current to the paste and the paste is baked by passage of the electrical current to form an electrode. The electrode is supported by a support band and is advanced past the support band by supplying paste under pressure to the pressure chamber. The pressure chamber is heated to maintain the paste in a softened state.

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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 10, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 10, 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.
FiledFebruary 11, 1988
GrantedNovember 10, 1992
Term endedNovember 10, 2009
Patent numberCA 1310048 C
Classification (IPC)H05B7/09

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedFeb 11, 1988Patent grantedNov 10, 1992Term endedNov 10, 2009

Sources & verification

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