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Expired Canadian patentCanada

Method and apparatus for incremental electro-processing of large areas

CA 1051370 A · Owner: Jumer, John F. · Inventors: Jumer, John F.

CIPO record

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Abstract From the Canadian patent

A dielectric processing chamber unit for use in electroprocessing large surface areas including electropolishing and electroplating. The processing chamber unit has an open face, an open top, a sealing strip an electro-, lyte inlet and an electrode. The processing chamber unit is placed with its open face against a surface to be electroprocessed and an electrolyte is introduced into the chamber through the inlet. The inlet is located so that the entering electrolyte dislodges gas bubbles formed during electroprocessing and then both the electrolyte and gas leave the chamber through its open top. A method of electroprocessing a surface using such a processing chamber unit whereby a …

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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 March 27, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 27, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMarch 27, 1979
Term endedMarch 27, 1996
Patent numberCA 1051370 A
Classification (IPC)C25D5/08 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedMarch 27, 1979Term endedMarch 27, 1996

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