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Expired Canadian patentCanada

Agitator, agitating method, and melting furnace with agitator

CA 2549629 C · Owner: Takahashi, Kenzo · Inventors: Takahashi, Kenzo

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 agitator for agitating a melt includes a heat-resistive container having a blast opening through which cooling air is blown and an exhaust opening for exhausting air having been subjected to heat exchange and a rotating magnet assembly composed of a permanent magnet housed in the heat-resistive container in a rotatable manner magnetic lines of force emitted from the permanent magnet penetrating through the heat-resistive container to exit outside and then penetrating the heat-resistive container again to return to the permanent magnet.

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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 June 6, 2006 and granted August 27, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 6, 2026.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 6, 2006
GrantedAugust 27, 2013
Term endedJune 6, 2026
Patent numberCA 2549629 C
Classification (IPC)F27D27/00

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedJune 6, 2006Patent grantedAug 27, 2013Term endedJune 6, 2026

Sources & verification

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