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US Patent 9386635 Induction heating cooking device

Patent 9386635 was granted and assigned to Panasonic on July, 2016 by the United States Patent and Trademark Office.

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Patent
Patent

Patent attributes

Current Assignee
Panasonic
Panasonic
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
9386635
Date of Patent
July 5, 2016
Patent Application Number
13643644
Date Filed
June 10, 2011
Patent Citations Received
‌
US Patent D1000206 Cooktop or portion thereof
‌
US Patent D1000205 Cooktop or portion thereof
Patent Primary Examiner
‌
Dana Ross
Patent abstract

The disclosed induction heating cooking device includes a boiling-over detection portion which is adapted to reduce heating output from an inverter to a pre-set value if the amount of change of a capacitance detected by a capacitance detection portion from a reference value (Vo) is equal to or more than an output reduction threshold value (ΔV2), and further is adapted to stop heating, if the amount of change is equal to or more than an output stop threshold value (ΔV3). In this case, the output stop threshold value is provided for each of the plurality of the electrodes, which can absorb impedance variations in the plurality of the electrodes formed through pattern printing using conductive films, thereby uniformizing their sensitivity to boiling over in any directions.

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