Patents by Inventor Tamotsu Izutani

Tamotsu Izutani has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8604397
    Abstract: There is provided a cooking device that prevents operation based on a control command assigned to a touch key from being executed when a user is not intending to operate the touch key. The cooking device includes an electrode unit which includes a key electrode (3a) provided on the lower surface of the top plate and a contact electrode (3b) electrically connected with the key electrode and inputs the assigned control command; a cancel electrode (5a) provided at the periphery of the contact electrode so that the distance between the contact electrode and the cancel electrode is smaller than the width of the finger of the user; and a control unit (8) for controlling conduction to a heating source based on the control command assigned to the electrode unit when detecting that the vicinity of the electrode unit is touched. The control unit (8) limits the operation based on the control command when detecting that the vicinity of the cancel electrode is touched.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: December 10, 2013
    Assignee: Panasonic Corporation
    Inventors: Keiko Isoda, Hiroshi Tominaga, Tamotsu Izutani, Sadatoshi Tabuchi, Kuniaki Sakakibara
  • Patent number: 8389905
    Abstract: A rear surface of an operating region disposed forwardly of a top plate and colored is coated with conductor detecting units, each slotted to define a command display and a frame display therein and having a light shielding property, and associated conductor connectors, while a light shielding film having an insulating property is formed around them. A planar light emitting member is arranged below the conductor detecting units so as to confront them so that each of the conductor detecting units can be recognized as an operating button when the planar light emitting member emits light, but when the light emitting member is blacked out, such operating button can be made hard for the user to look at, thereby increasing the operability and the design feature of the outer appearance of a cooking appliance.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: March 5, 2013
    Assignee: Panasonic Corporation
    Inventors: Tamotsu Izutani, Keiko Isoda, Hiroshi Tominaga, Fumitaka Ogasawara
  • Patent number: 8383989
    Abstract: A cooking device, that prevents erroneous operations which are not intended by a user, includes a top plate on an upper surface of a main body, a heating section to perform induction-heating of a bottom surface of an object to be heated that is placed on the upper portion of the main body, a control unit to control heating output of a heating coil, one or more operation switches at the top plate, a light source to illuminate the operation switch, and a connection terminal to electrically connect the operation switch to the control unit. The operation switch includes a conductive detection section to detect that a user touches the conductive detection section based on capacitance change, and a conductive connection section contacted with the connection terminal. The connection section is formed to be directly connected to a portion of an outer edge of the detection section.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: February 26, 2013
    Assignee: Panasonic Corporation
    Inventors: Hiroshi Tominaga, Fumitaka Ogasawara, Keiko Isoda, Tamotsu Izutani
  • Patent number: 8247744
    Abstract: There is provided a cooking device that prevents an electricity conduction setting to a heating source from fluctuating when a user is not intending to operate a touch key. The cooking device includes a heating source for heating an object to be heated; a top plate provided on an upper surface of the device; a touch key that is provided on the top plate and is operable to input a control command by being touched with a finger; a cancel electrode provided at a periphery of the touch key; and a control unit for controlling an electricity conduction to the heating source based on the control command. When detecting that a portion of the top plate near the cancel electrode is touched with the finger, the control unit maintains a condition of electricity conduction to the heating source in time of the detection, and limits an operation based on the control command input to the touch key while detecting that the portion of the top plate near the cancel electrode is being touched with the finger.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: August 21, 2012
    Assignee: Panasonic Corporation
    Inventors: Kuniaki Sakakibara, Keiko Isoda, Hiroshi Tominaga, Tamotsu Izutani, Sadatoshi Tabuchi
  • Publication number: 20100176112
    Abstract: A rear surface of an operating region 47 disposed forwardly of a top plate 43 and colored is coated with conductor detecting units 49a to 51a, each slotted to define a command display 49c to 51c and a frame display 49b to 51b therein and having a light shielding property, and associated conductor connectors 55 to 57, while a light shielding film having an insulating property is formed around them. A planar light emitting member 60 is arranged below the conductor detecting units 49a to 51a so as to confront them so that each of the conductor detecting units can be recognized as an operating button when the planar light emitting member 60 emits light, but when the light emitting member 60 is blacked out, such operating button can be made hard for the user to look at, thereby increasing the operability and the design feature of the outer appearance of a cooking appliance.
    Type: Application
    Filed: June 6, 2008
    Publication date: July 15, 2010
    Inventors: Tamotsu Izutani, Keiko Isoda, Hiroshi Tominaga, Fumitaka Ogasawara
  • Publication number: 20100176113
    Abstract: A cooking device capable of preventing erroneous operations which are not intended by a user is provided. The cooking device includes a top plate provided on an upper surface of a main body, a heating section operable to perform induction-heating a bottom surface of an object to be heated that is placed on the upper portion of the main body, a control unit operable to control a heating output of a heating coil, one or more operation switches (32a) provided at the top plate, a light source (17) operable to illuminate the operation switch, and a connection terminal operable to electrically connect the operation switch to the control unit. The operation switch (32a) include a conductive detection section (18) operable to detect that a user touches the conductive detection section based on capacitance change, and a conductive connection section (16) that is contacted with the connection terminal, and the connection section is formed to be directly connected to a portion of an outer edge of the detection section.
    Type: Application
    Filed: June 6, 2008
    Publication date: July 15, 2010
    Inventors: Hiroshi Tominaga, Fumitaka Ogasawara, Keiko Isoda, Tamotsu Izutani
  • Publication number: 20100096382
    Abstract: There is provided a cooking device that prevents an electricity conduction setting to a heating source from fluctuating when a user is not intending to operate a touch key. The cooking device includes a heating source (10) for heating an object to be heated; a top plate (1) provided on an upper surface of the device; a touch key (13) that is provided on the top plate and is operable to input a control command by being touched with a finger; a cancel electrode (5) provided at a periphery of the touch key; and a control unit (8) for controlling an electricity conduction to the heating source based on the control command.
    Type: Application
    Filed: January 22, 2008
    Publication date: April 22, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Kuniaki Sakakibara, Keiko Isoda, Hiroshi Tominaga, Tamotsu Izutani, Sadatoshi Tabuchi
  • Publication number: 20090303201
    Abstract: There is provided a cooking device that prevents operation based on a control command assigned to a touch key from being executed when a user is not intending to operate the touch key. The cooking device includes an electrode unit which includes a key electrode (3a) provided on the lower surface of the top plate and a contact electrode (3b) electrically connected with the key electrode and inputs the assigned control command; a cancel electrode (5a) provided at the periphery of the contact electrode so that the distance between the contact electrode and the cancel electrode is smaller than the width of the finger of the user; and a control unit (8) for controlling conduction to a heating source based on the control command assigned to the electrode unit when detecting that the vicinity of the electrode unit is touched. The control unit (8) limits the operation based on the control command when detecting that the vicinity of the cancel electrode is touched.
    Type: Application
    Filed: January 22, 2008
    Publication date: December 10, 2009
    Inventors: Keiko Isoda, Hiroshi Tominaga, Tamotsu Izutani, Sadatoshi Tabuchi, Kuniaki Sakakibara
  • Publication number: 20080092871
    Abstract: The built-in cooker has a body forming an outer hull, a heater, and a top unit. The heater is contained in the body. The top unit covers a top face of the body and is fixed to the body. The top unit includes a top plate, a holding member, and a hook. The holding member places the top plate thereon, and holds an outer peripheral part of the top plate. The hook is fixed to the holding member and is removably fixed to a side of the body. The hook includes a fixing plate extending to a vicinity of a corner portion of the holding member and being fixed to an bottom face of the holding member.
    Type: Application
    Filed: March 15, 2006
    Publication date: April 24, 2008
    Inventor: Tamotsu Izutani
  • Patent number: 7129449
    Abstract: An induction heating cooker includes an infrared sensor for sensing an infrared intensity from a load pot, a waveguide for guiding infrared radiation from the load pot to the infrared sensor, a first magnetism-proofing unit and a second magnetism-proofing unit for reducing magnetic fluxes leaking from a heating coil. Placement of the waveguide at a position lower than an upper surface of the second magnetism-proofing unit reduces self-heating of the waveguide due to magnetic flux supplied from the heating coil. As a result, a temperature rise of the infrared sensor due to radiation heat from the waveguide can be reduced, and an accuracy of sensing a temperature by the infrared sensor can be improved.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: October 31, 2006
    Assignee: Matsushita Electric Industrial Co. Ltd.
    Inventors: Hiroshi Tominaga, Naoaki Ishimaru, Kiyoyoshi Takada, Tamotsu Izutani
  • Patent number: 7049564
    Abstract: The present invention offers an induction heating apparatus in which the infrared sensor performs stable temperature detection without undergoing the influence of leakage magnetic flux from the induction heating means.
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: May 23, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kiyoyoshi Takada, Naoaki Ishimaru, Tamotsu Izutani
  • Publication number: 20060049178
    Abstract: An induction heating cooker includes an infrared sensor for sensing an infrared intensity from a load pot, a waveguide for guiding infrared radiation from the load pot to the infrared sensor, a first magnetism-proofing unit and a second magnetism-proofing unit for reducing magnetic fluxes leaking from a heating coil. Placement of the waveguide at a position lower than an upper surface of the second magnetism-proofing unit reduces self-heating of the waveguide due to magnetic flux supplied from the heating coil. As a result, a temperature rise of the infrared sensor due to radiation heat from the waveguide can be reduced, and an accuracy of sensing a temperature by the infrared sensor can be improved.
    Type: Application
    Filed: July 16, 2004
    Publication date: March 9, 2006
    Applicant: Matsushita Electric Industrial Co., LTD.
    Inventors: Hiroshi Tominaga, Naoaki Ishimaru, Kiyoyoshi Takada, Tamotsu Izutani
  • Publication number: 20050242088
    Abstract: The present invention offers an induction heating apparatus in which the infrared sensor performs stable temperature detection without undergoing the influence of leakage magnetic flux from the induction heating means.
    Type: Application
    Filed: July 1, 2004
    Publication date: November 3, 2005
    Inventors: Kiyoyoshi Takada, Naoaki Ishimaru, Tamotsu Izutani