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Expired Canadian patentCanada

Cooking appliance

CA 2077018 C · Owner: Naka, Motohiko · Inventors: Naka, Motohiko; Ueda, Shigeki; Watanabe, Kenji

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

Changes in physical quantities observed during a cooking operation are inputted into a neural network so that the surface temperature and the center temperature of the substance being cooked can be estimated in real time. The cooking heater or heaters are controlled in accordance with this temperature information so that the performance as an automatic cooking operation is improved.

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 August 27, 1992 and granted April 15, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 27, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 27, 2014.
  • 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 27, 1992
GrantedApril 15, 1997
Term endedAugust 27, 2012
Patent numberCA 2077018 C
Classification (IPC)A47J37/00 +2 more

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedAug 27, 1992Patent grantedApril 15, 1997Term endedAug 27, 2012

Sources & verification

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