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Expired Canadian patentCanada

Electronic control system for a heating apparatus

CA 2247698 C · Owner: Honeywell International Inc. · Inventors: Maher, Charles A. Jr.; Larrick, Raymond

CIPO record

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Abstract From the Canadian patent

An electronic control for a heating apparatus and specifically a deep fat fryer is provided. The electronic control includes a temperature sensor for sensing the temperature of a cooking medium during a cooking cycle. Cooking medium temperature sensed during the cooking cycle is utilized as a pointer to one of aplurality of time compensation values for corresponding temperatures stored in amemory. The time compensation corresponding to the sensed cooking medium temperature is retrieved from the memory and adjusted by an offset value determined in accordance with the setpoint temperature to obtain an adjusted time compensation value. The adjusted time compensation value is utilized in 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 March 8, 1995 and granted August 10, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 8, 2015.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 8, 2017.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 8, 1995
GrantedAugust 10, 1999
Term endedMarch 8, 2015
Patent numberCA 2247698 C
Classification (IPC)H05B1/00 +2 more

Timeline

Timeline From CIPO dates

1996199820002002200420062008201020122014Application filedMarch 8, 1995Patent grantedAug 10, 1999Term endedMarch 8, 2015

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