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Expired Canadian patentCanada

Superconductor sensors

CA 2023308 C · Owner: Hollander, Milton B. · Inventors: Mckinley, William Earl; Hollander, Milton B.

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 superconducting wire is produced by the surrounding of a superconductive material core with an intermediate compressible insulating layer and an outer malleable layer and then drawing said composite structure through a series of dies to reduce the diameter of the wire on the order of 400 to 10,000 times or by reducing the superconductive core material to the desired wire size by passing it through a series of dies to reduce the diameter of the wire on the order of 400 to 10,000 times and then coating the wire with a noncompressible insulating layer and then placing an outer malleable layer over the insulated wire and drawing this through dies to snuggly fit the outer layer onto 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

  • Filed August 15, 1990 and granted April 30, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 15, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 15, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 15, 1990
GrantedApril 30, 1996
Term endedAugust 15, 2010
Patent numberCA 2023308 C
Classification (IPC)G01K7/16 +1 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedAug 15, 1990Patent grantedApril 30, 1996Term endedAug 15, 2010

Sources & verification

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