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Expired Canadian patentCanada

Production of metallic strands

CA 1046446 A · Owner: Kennecott Copper Corporation · Inventors: Wang, Chih-Chung

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

A fine metallic strand of infinite length is produced by continuous electrodeposition of metal on a conductive strip having a narrow, closed-loop plating surface defined by an insulating material bonded to sides of the conductive strip so that the bonding surface is generally transverse to the plating surface. When a desired quantity of the metal is deposited on the plating surface, the strand is cut and one end is peeled off to a spooler. In one embodiment, the conductive strip and the associated plating surface have the shape of a double spiral.

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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 16, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 16, 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—
GrantedJanuary 16, 1979
Term endedJanuary 16, 1996
Patent numberCA 1046446 A
Classification (IPC)C25D1/04

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedJan 16, 1979Term endedJan 16, 1996

Sources & verification

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