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Expired Canadian patentCanada

Electrical wire and cable

CA 1319401 C · Owner: Barrett, Shaun M. · Inventors: Ludden, Michael J.; Barrett, Shaun 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

An electrical wire comprises an electrical conductor (2), an insulating mineral layer (3) electrolytically formed on the conductor from chemically delaminated weathered mica and a, silicone polymer layer (3') and mineral layer. Preferably the layer of polymeric insulation (4) is extruded on the silicone layer. The electrical wire exhibits very good electrical properties for long periods at elevated temperatures e.g. during, a fire.

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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 June 22, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 22, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 8, 1988
GrantedJune 22, 1993
Term endedJune 22, 2010
Patent numberCA 1319401 C
Classification (IPC)H01B3/28 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedJuly 8, 1988Patent grantedJune 22, 1993Term endedJune 22, 2010

Sources & verification

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