Patent Yard Sign in
Expired Canadian patentCanada

Agitator and melting furnace with agitator

CA 2549636 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.

Open the CIPO record

Abstract From the Canadian patent

An agitator for applying an alternating field to a melting furnace main body in order to melt a row material to form a melt includes a plurality of magnets which are arranged so that magnetic lines of force emitted from one of the magnets pass through the melt in the melting furnace main body and return to another magnet the magnets being fixed to an inclined surface which is inclined by an angle with respect to a horizontal surface and being rotatable around an axis substantially perpendicular to the inclined surface.

Read the whole patent

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 December 24, 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
GrantedDecember 24, 2013
Term endedJune 6, 2026
Patent numberCA 2549636 C
Classification (IPC)F27D27/00

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedJune 6, 2006Patent grantedDec 24, 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.