The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 21, 2012
Filed:
Jun. 23, 2008
Kenji Watanabe, Hyogo, JP;
Izuo Hirota, Hyogo, JP;
Hiroshi Tominaga, Hyogo, JP;
Tomoya Fujinami, Shiga, JP;
Keiko Isoda, Hyogo, JP;
Kenji Watanabe, Hyogo, JP;
Izuo Hirota, Hyogo, JP;
Hiroshi Tominaga, Hyogo, JP;
Tomoya Fujinami, Shiga, JP;
Keiko Isoda, Hyogo, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An induction heating cooker includes a cooking container heating coil, an inverter circuit to supply high-frequency current to the heating coil, an infrared ray sensor to detect radiation from the container, an electric power integrating section to integrate heating electric power from the inverter circuit, and a heating control section to control an inverter circuit output. If the power integrating section has less than a predetermined value when an increase in the output of the infrared ray sensor has a first value after start of heating, the cooker shifts to a first heating control mode and, if equal to or more than the predetermined value, shifts to a second heating control mode. The power, in the first heating control mode, is reduced to a second amount of power lower than the first amount and, in the second heating control mode, is a third amount larger than the second amount.