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Expired Canadian patentCanada

Wall type microwave oven and output control method thereof

CA 2238442 C · Owner: Samsung Electronics Co. Ltd. · Inventors: Jeong, Sang-Jin; Kang, Jeon-Hong

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A wall type microwave oven having a hood device and an output control method thereof are disclosed. The microwave oven includes a first switch section for switching a power supply to a hood motor of the hood device and a second switch section for, switching power supply to a hood lamp of the hood device. A third switch section controls the output of the microwave oven by several stages. A control section switches/controls the third switch section, responsive to a control of the first or second switch section such that, when the microwave oven is operated with the hood motor or said hood lamp output of the, microwave oven is to be a low level. The output control method includes the steps of …

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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 May 25, 1998 and granted July 30, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 25, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 25, 2020.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 25, 1998
GrantedJuly 30, 2002
Term endedMay 25, 2018
Patent numberCA 2238442 C
Classification (IPC)F24C7/08 +2 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedMay 25, 1998Patent grantedJuly 30, 2002Term endedMay 25, 2018

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