Patents by Inventor Mitsuhiro Fukuda

Mitsuhiro Fukuda 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: 10116245
    Abstract: A compressor driving device includes: a controller that PWM drives a compressor; an inverter circuit unit that supplies power to an electric motor included in the compressor; a drive circuit that drives the inverter circuit unit according to a control signal; a voltage detector that detects a voltage that is output to the electric motor; and a current detector that detects a current that is output to the electric motor. When a product of a detection value of the voltage detector and a detection value of the current detector is greater than a predetermined comparison value, a duty ratio of the control signal is reduced to cause the input power supplied to the electric motor by the inverter circuit unit to have a predetermined input power level or less.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: October 30, 2018
    Assignee: PANASONIC APPLIANCES REFRIGERATION DEVICES SINGAPORE
    Inventors: Mitsuhiro Fukuda, Masaki Sumi, Hiroaki Kase, Shigetomi Tokunaga, Masamitsu Taura, Takayuki Okamoto
  • Patent number: 10001311
    Abstract: A simple inverter-controlled refrigerator includes temperature detector (17), constant speed main body control unit (12) whose power is turned on/off by temperature detector (17), and that can drive a constant speed compressor, inverter control unit (14) that is connected to constant speed main body control unit (12), and that is operated, based on a power on/off signal of constant speed main body control unit (12). And variable speed compressor (8) that is connected to inverter control unit (14), and that is controlled, based on an output from inverter control unit (14). Inverter control unit (14) has rotation speed setting unit (23) which is operated, based on the power on/off signal of constant speed main body control unit (12), and which is configured to set a rotation speed of variable speed compressor (8), and inverter drive circuit unit (24) which drives variable speed compressor (8) at the rotation speed set by rotation speed setting unit (23).
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: June 19, 2018
    Assignee: PANASONIC CORPORATION
    Inventors: Kenji Ohnishi, Hiroaki Kase, Mitsuhiro Fukuda, Masaki Sumi, Katsumi Endou, Shigetomi Tokunaga
  • Publication number: 20170141709
    Abstract: A compressor driving device includes: a controller (23) that PWM drives a compressor; an inverter circuit unit (4) that supplies power to an electric motor included in the compressor; a drive circuit (5) that drives the inverter circuit unit (4) according to a control signal; a voltage detector (9) that detects a voltage that is output to the electric motor; and a current detector (10) that detects a current that is output to the electric motor. When a product of a detection value of the voltage detector (9) and a detection value of the current detector (10) is greater than a predetermined comparison value, a duty ratio of the control signal is reduced to cause the input power supplied to the electric motor by the inverter circuit unit (4) to have a predetermined input power level or less.
    Type: Application
    Filed: June 19, 2015
    Publication date: May 18, 2017
    Inventors: Mitsuhiro FUKUDA, Masaki SUMI, Hiroaki KASE, Shigetomi TOKUNAGA, Masamitsu TAURA, Takayuki OKAMOTO
  • Publication number: 20160363361
    Abstract: A simple inverter-controlled refrigerator includes temperature detector (17), constant speed main body control unit (12) whose power is turned on/off by temperature detector (17), and that can drive a constant speed compressor, inverter control unit (14) that is connected to constant speed main body control unit (12), and that is operated, based on a power on/off signal of constant speed main body control unit (12). And variable speed compressor (8) that is connected to inverter control unit (14), and that is controlled, based on an output from inverter control unit (14). Inverter control unit (14) has rotation speed setting unit (23) which is operated, based on the power on/off signal of constant speed main body control unit (12), and which is configured to set a rotation speed of variable speed compressor (8), and inverter drive circuit unit (24) which drives variable speed compressor (8) at the rotation speed set by rotation speed setting unit (23).
    Type: Application
    Filed: December 22, 2015
    Publication date: December 15, 2016
    Inventors: Kenji OHNISHI, Hiroaki KASE, Mitsuhiro FUKUDA, Masaki SUMI, Katsumi ENDOU, Shigetomi TOKUNAGA
  • Patent number: 9520815
    Abstract: A control device (100) of an electric sealed compressor of the present invention comprises a power converter (30) which supplies electric power to an electric motor (5) of the electric sealed compressor; a driving circuit (27) which drives the power converter (30); abnormality detector (40) which detects abnormality in an abnormality detection region including the power converter (30) and the driving circuit (27); a controller (11) configured to output a control signal for driving the power converter to the driving circuit (27) and stop outputting the control signal in response to a signal (Fo signal) output from the abnormality detector (40), the signal indicating that the abnormality has been detected; and an auxiliary protection circuit (50) configured to deactivate the driving circuit (27) in response to the signal output from the abnormality detector (40), the signal indicating that the abnormality has been detected.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: December 13, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masaki Sumi, Shigetomi Tokunaga, Hiroaki Kase, Masamitsu Taura, Mitsuhiro Fukuda
  • Publication number: 20150214863
    Abstract: A control device (100) of an electric sealed compressor of the present invention comprises a power converter (30) which supplies electric power to an electric motor (5) of the electric sealed compressor; a driving circuit (27) which drives the power converter (30); abnormality detector (40) which detects abnormality in an abnormality detection region including the power converter (30) and the driving circuit (27); a controller (11) configured to output a control signal for driving the power converter to the driving circuit (27) and stop outputting the control signal in response to a signal (Fo signal) output from the abnormality detector (40), the signal indicating that the abnormality has been detected; and an auxiliary protection circuit (50) configured to deactivate the driving circuit (27) in response to the signal output from the abnormality detector (40), the signal indicating that the abnormality has been detected.
    Type: Application
    Filed: July 8, 2013
    Publication date: July 30, 2015
    Inventors: Masaki Sumi, Shigetomi Tokunaga, Hiroaki Kase, Masamitsu Taura, Mitsuhiro Fukuda
  • Publication number: 20130002178
    Abstract: An inverter control device controls the operation of a brushless DC motor selsorlessly. A driving controller of the inverter control device switches commutation of switching elements from control based on a position detection commutation signal to control based on a forced synchronization commutation signal if an output voltage of an inverter circuit section is equal to or greater than a preset threshold and a value of a rotational speed detected by the rotational speed detector is equal to or less than a reference value less than a target value of the rotational speed. The output voltage controller of the inverter control device changes the output voltage control signal based on a phase difference detected by a phase difference detector when the driving controller is controlling commutation of switching elements based on the forced synchronization commutation signal.
    Type: Application
    Filed: June 27, 2012
    Publication date: January 3, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Katsumi ENDOU, Mitsuhiro FUKUDA, Atsushi KODA
  • Patent number: 8117683
    Abstract: Provided are a toilet seat device saving energy and accurately stabilizing the temperature of a seating section at a predetermined level in a short time, and a toilet apparatus having the same. A control section adjusts the temperature of a toilet seat section to 18° C. when a heating function is turned on, and during a standby period D1, the control section performs low electric power drive of a lamp heater provided at the toilet seat section. The control section starts 600 W drive of the lamp heater at time t1 after the control section detects user's entry into a room, and the control section maintains the 600 W drive during an inrush current reduction period D2. The control section starts 1200 W drive of the lamp heater at time t2 and maintains the 1200 W drive during a first temperature rise period D3.
    Type: Grant
    Filed: June 26, 2006
    Date of Patent: February 21, 2012
    Assignee: Panasonic Corporation
    Inventors: Yuuji Yamamoto, Hidetoshi Amaya, Shinji Fujii, Noboru Okui, Hiroshi Nagasato, Kenji Yoshinaga, Masahiro Takiguchi, Kazuya Kondoh, Eiichi Tanaka, Mitsuhiro Fukuda
  • Patent number: 8091679
    Abstract: A highly safe electric power steering device including a control device for determining the failure of a motor current detector based on the difference between the motor current estimate value and the detected motor current value is provided. The abnormality determining unit computes the absolute value of difference between the motor current estimate value and the detected motor current value, measures the number of times when the absolute value of difference exceeded the predetermined threshold value within the predetermined period, and measures further the cumulative value of the number of times of exceeding the threshold value within the predetermined period. When the cumulative value exceeded the predetermined reference number of times for determining abnormality, the motor current detector is determined to be abnormal.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: January 10, 2012
    Assignee: NSK Ltd.
    Inventors: Toru Sakaguchi, Mitsuhiro Fukuda, Yasuhide Nomura
  • Patent number: 7952081
    Abstract: A subject is imaged for treatment of the subject such as an eye to be inspected, while irradiating a charged particle beam on the eye, so that an aim position of a charged particle beam for treatment can be determined.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: May 31, 2011
    Assignees: National University Corporation Gunma University, Japan Atomic Energy Agency
    Inventors: Hirofumi Shimada, Takashi Nakano, Takuro Sakai, Kazuo Arakawa, Mitsuhiro Fukuda, Masakazu Oikawa, Takahiro Satoh, Takashi Agematsu, Ken Yusa, Hiroyuki Katoh, Shoji Kishi, Taku Sato, Yasushi Horiuchi
  • Patent number: 7795801
    Abstract: An organic electroluminescent element comprising a light emission layer and a hole blocking layer adjacent to the light emission layer, wherein, (i) the light emission layer contains a compound having a specified partial structure and having a molecular weight of not more than 1700; and (ii) the hole blocking layer contains a derivative selected from the group consisting of a styryl derivative, a boron derivative and a carboline derivative.
    Type: Grant
    Filed: September 21, 2004
    Date of Patent: September 14, 2010
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Noriko Ueda, Taketoshi Yamada, Hiroshi Kita, Mitsuhiro Fukuda
  • Patent number: 7749619
    Abstract: An organic electroluminescent element and a display device exhibiting high emission efficiency and long life. The organic electroluminescent element contains a pair of electrodes having therebetween at least one constituting layer containing a phosphorescent light emitting layer, wherein one of the constituting layer contains a compound of Formula (1): wherein Z1 represents an aromatic heterocylic ring which may have a substituent; Z2 represents an aromatic heterocylic ring or an aromatic hydrocarbon ring both of which may have a substituent; Z3 represents a divalent linking group or a single bond; and R101 represents a hydrogen atom or a substituent.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: July 6, 2010
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Yoshiyuki Suzuri, Hiroshi Kita, Eisaku Katoh, Tomohiro Oshiyama, Mitsuhiro Fukuda, Noriko Ueda
  • Publication number: 20100163726
    Abstract: A subject is imaged for treatment of the subject such as an eye to be inspected, while irradiating a charged particle beam on the eye, so that an aim position of a charged particle beam for treatment can be determined.
    Type: Application
    Filed: January 12, 2007
    Publication date: July 1, 2010
    Applicants: NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITY, JAPAN ATOMIC ENERGY AGENCY
    Inventors: Hirofumi Shimada, Takashi Nakano, Takuro Sakai, Kazuo Arakawa, Mitsuhiro Fukuda, Masakazu Oikawa, Takahiro Satoh, Takashi Agematsu, Ken Yusa, Hiroyuki Katoh, Shoji Kishi, Taku Sato, Yasushi Horiuchi
  • Patent number: 7740955
    Abstract: The present invention relates to an organic electroluminescent element and a display device exhibiting high emission efficiency and long life. The organic electroluminescent element contains a pair of electrodes having therebetween at least one constituting layer containing a phosphorescent light emitting layer, wherein one of the constituting layer contains a compound represented by Formula (1): wherein Z1 represents an aromatic heterocylic ring which may have a substituent; Z2 represents an aromatic heterocylic ring or an aromatic hydrocarbon ring both of which may have a substituent; Z3 represents a divalent linking group or a single bond; and R101 represents a hydrogen atom or a substituent.
    Type: Grant
    Filed: April 20, 2004
    Date of Patent: June 22, 2010
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Yoshiyuki Suzuri, Hiroshi Kita, Eisaku Katoh, Tomohiro Oshiyama, Mitsuhiro Fukuda, Noriko Ueda
  • Patent number: 7629060
    Abstract: Disclosed is an organic electroluminescent element comprising an anode, a cathode and a component layer including a light emission layer, the component layer being provided between the anode and the cathode, wherein the component layer contains a compound represented by formula 1, X1-(A1)n??Formula 1 wherein A1 represents a group represented by formula 2;
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: December 8, 2009
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Tomohiro Oshiyama, Hiroshi Kita, Taketoshi Yamada, Mitsuhiro Fukuda, Yoshiyuki Suzuri, Motoi Kinoshita, Noriko Ueda
  • Patent number: 7582897
    Abstract: Disclosed is an organic semiconductor composition containing particles and an organic semiconducting compound combining with the particles.
    Type: Grant
    Filed: May 12, 2006
    Date of Patent: September 1, 2009
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Katsura Hirai, Mitsuhiro Fukuda
  • Patent number: 7576475
    Abstract: An actuator device which is made as a laminated structure including a displacement-functioning layer having a region to be deformed by the electric field and an electrode-functioning layer having a region to function as an electrode. And an manufacturing method in which the above-mentioned device is easily manufactured, the method in which, according to the laminated structure, arranging each layer to be formed on the transfer section and transferring it onto the substrate to laminate.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: August 18, 2009
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Tomoo Izumi, Akira Kosaka, Mitsuhiro Fukuda
  • Patent number: 7535626
    Abstract: A shape-variable optical element, which includes: a shape-variable section made up of an organic material that can be expanded and contracted by an electric field, in a direction of the electric field; and a pair of electrode layers to sandwich the shape-variable section, wherein amounts of expansion and contraction of the shape-variable section, which are generated by the electric field when a voltage is applied to the pair of electrode layers, have a distribution pattern in a surface perpendicular to the electric field.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: May 19, 2009
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Akira Kosaka, Tomoo Izumi, Mitsuhiro Fukuda
  • Patent number: 7532382
    Abstract: The present invention provides a display element including a layered body. The layered body includes a layered portion comprising a plurality of transparent thin films with different refractive indexes, and a plurality of electrodes which are adapted to apply an electric field to each of the plurality of transparent thin films. Each of the plurality of transparent thin films comprises a material whose thickness changes according to the electric field.
    Type: Grant
    Filed: June 1, 2007
    Date of Patent: May 12, 2009
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Tomoo Izumi, Akira Kosaka, Mitsuhiro Fukuda
  • Patent number: 7485376
    Abstract: Disclosed are an organic electroluminescent element comprising a light emission layer containing a phosphorescent compound and a hole transporting layer adjacent thereto containing a hole transporting material, wherein the hole transporting material has a 0-0 band of the phosphorescence spectra of from 300 to 450 nm and has a molecular weight of not less than 550, and an illuminator and a display each comprising the organic electroluminescent element.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: February 3, 2009
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Yoshiyuki Suzuri, Hiroshi Kita, Tomohiro Oshiyama, Mitsuhiro Fukuda, Noriko Ueda