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Expired Canadian patentCanada

Apparatus and method used in making wire and similar elongated members and wire made using same

CA 1330481 C · Owner: Polymet Corporation · Inventors: Hunt, James G.

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Abstract From the Canadian patent

An apparatus and method used in making wire and similar elongate members, and wire made using same are, provided wherein rods are extruded using a filled billet technique which comprises disposing the rods in a can comprising the filled billet and additional steps are employed which comprise placing the rods in adjoining side-by-side relation to define a geometric pattern and fixing together at their ends those rods defining the periphery of the pattern to define a dense pack of the rods wherein the placing and fixing steps are achieved prior to the step of disposing the rods within the can and wherein the dense pack and hence the rods are adapted to fit snugly within the can during the …

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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 July 5, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 5, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 22, 1988
GrantedJuly 5, 1994
Term endedJuly 5, 2011
Patent numberCA 1330481 C
Classification (IPC)B23P17/00 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedApril 22, 1988Patent grantedJuly 5, 1994Term endedJuly 5, 2011

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