4584 patents
Page 7 of 230
Utility
Semiconductor device comprising a MOSFET having a RESURF region and higher peak impurity concentration diffusion region in the RESURF region
21 Nov 23
Provided is a semiconductor device including: an N-type diffusion layer being a second region, formed in a surface portion of a P-type diffusion layer being a first region, to function as a RESURF region; an N-type buried diffusion layer being a third region formed in a bottom portion of the second region, close to a high-side circuit; and a MOSFET using the second region as a drift layer.
Toshihiro Imasaka, Kazuhiro Shimizu, Manabu Yoshino, Yuji Kawasaki
Filed: 20 Oct 20
Utility
Rotary electric machine control device
21 Nov 23
A rotary electric machine control device includes: a plurality of mutually-independent motor system lines, each having a motor with a servomechanism and a drive controller for driving and controlling the motor (3); and a cooperative controller which, when occurrence of a failure of the drive controller is detected in one motor system line in the plurality of the motor system lines, establishes a connection path for causing the motor of the one motor system line where the occurrence of the failure has been detected, to be driven using at least one part of the drive controller in another motor system line in that motor system lines.
Chiharu Morisaki
Filed: 20 Aug 19
Utility
Power conversion device and failure determination method
21 Nov 23
A power conversion apparatus includes a filter capacitor, a contactor to electrically connect the filter capacitor to a power source or electrically disconnect the filter capacitor from the power source, and a failure determiner to determine whether a failure occurs in the contactor.
Yoshinori Chiba
Filed: 30 Nov 18
Utility
DC power distribution system
21 Nov 23
A DC power distribution system includes: a transformer; a rectification device; a DC bus through which DC power flows; a plurality of DC branch lines branching off from the DC bus; an AC interrupting portion connected to an input side of the transformer; a first DC interrupting portion connected between the rectification device and the DC bus; and a plurality of second DC interrupting portions respectively provided to the plurality of DC branch lines.
Hayato Takeuchi, Kenichi Fukuno, Takaharu Ishibashi, Takushi Jimichi
Filed: 5 Jun 20
Utility
Re-encryption device, method and computer readable medium to change the access range for ciphertext
21 Nov 23
A cryptographic system comprising an encryption device to generate a ciphertext; a master re-encryption key generation device to generate a master re-encryption key that cannot decrypt a ciphertext generated by the encryption device, but can generate a re-encryption key for changing an access range for a ciphertext generated by the encryption device; re-encryption device to generate a re-encryption key for re-encrypting a target ciphertext generated by the encryption device, using the master re-encryption key, and re-encrypts the target ciphertext to generate a re-encrypted ciphertext, using the generated re-encryption key; and a decryption device to decrypt at least one of the ciphertext generated by the encryption device and the re-encrypted ciphertext generated by the re-encryption device.
Yutaka Kawai, Yoshihiro Koseki
Filed: 4 Oct 21
Utility
Vehicle-mounted electronic apparatus
21 Nov 23
A drawn portion having a shape protruding from a side face to a space inside a housing is provided at an end to which a rear surface cover is fastened of the side face.
Shunsuke Sawada, Masakazu Shoji, Takahiro Mukado
Filed: 3 Apr 19
Utility
Cleaning tool and electric cleaner
21 Nov 23
A cleaning tool includes a body for sucking in dust on a surface to be cleaned, a suction pipe, and a joint for connecting the suction pipe to the body.
Yohei Asahi, Koshiro Takano, Marika Haramaki, Kimiyoshi Soma
Filed: 25 May 21
Utility
Compressor unit, outdoor unit of air-conditioning apparatus, and air-conditioning apparatus
21 Nov 23
A compressor unit includes a compressor, pipes connected to a suction side and a discharge side of the compressor, and a sound absorbing member.
Masayuki Watanabe, Hiroyuki Jinnai
Filed: 25 May 18
Utility
Device for monitoring state of apparatus and method for monitoring state of apparatus
21 Nov 23
A device for monitoring state of apparatus projects a plurality of pieces of measured data to a dimensionless space in which a plurality of display shapes of a plurality of pieces of normal information are represented by a common shape on the basis of a positional relationship between the plurality of display shapes of the plurality of pieces of normal information and the plurality of pieces of measured data, and estimates a distribution of the state of the apparatus on the basis of the plurality of pieces of measured data projected to the dimensionless space.
Toshiyuki Kuriyama
Filed: 10 Dec 21
Utility
Multiplexing optical system
21 Nov 23
A multiplexing optical system includes a light source, a lens and a lens array.
Yoko Inoue, Masato Kawasaki, Tatsuya Yamamoto, Kazuki Kuba, Susumu Noda
Filed: 13 Sep 19
Utility
Railroad system, operation management device, operation management method, and non-transitory storage medium to store operation management program
14 Nov 23
A railroad system includes a plurality of trains and an operation management device.
Maho Fujihara, Daisuke Tateishi, Hideo Nakata, Shota Shimayoshi, Atsushi Takami, Kenji Ueda
Filed: 4 Nov 20
Utility
Heat storage material, method of producing same, and heat storage tank
14 Nov 23
Provided is a heat storage material, consisting of a thermo-sensitive polymer gel formed of a thermo-sensitive polymer and a solvent selected from the group consisting of water, an organic solvent, and a mixture thereof, wherein the hydrophilicity and hydrophobicity of the heat storage material reversibly change to each other across the lower critical solution temperature thereof, and in the process of the change, the solvent in the thermo-sensitive polymer gel maintains a liquid state.
Hideharu Nobutoki
Filed: 26 Mar 19
Utility
Air-conditioning device with a heat medium heat exchanger
14 Nov 23
An air-conditioning device includes: a heat medium cycle circuit including: a pump, a plurality of indoor heat exchangers, and a plurality of flow control devices configured to control a flow rate of the heat medium through the heat medium cycle circuit; a heat-source-side device configured to heat or cool the heat medium; and a controller that includes a determination processing unit to determine whether the heat medium is caused to pass through the plurality of indoor heat exchangers where heat exchange is stopped, a selection processing unit to select, based on a determination from the determination processing unit, an indoor heat exchanger through which the heat medium is caused to pass from the plurality of indoor heat exchangers where heat exchange is stopped, and an instruction processing unit to instruct a release of a flow control device that corresponds to the indoor heat exchanger selected.
Kimitaka Kadowaki, Naofumi Takenaka
Filed: 26 Sep 18
Utility
Electric motor, air conditioner, and method for producing electric motor
14 Nov 23
An electric motor includes a rotor, a stator assembly, and a plurality of heat dissipation members fixed to the stator assembly and to release heat of the stator assembly.
Hiroki Aso, Takaya Shimokawa, Ryogo Takahashi, Takanori Watanabe, Kazuma Nomoto
Filed: 20 Jan 17
Utility
Power conversion device that can suppress interference between control of input current from an AC power supply and voltage control for a DC capacitor
14 Nov 23
Provided is a power conversion device that can suppress interference between control of input current from an AC power supply and voltage control for a DC capacitor to perform both the controls with high accuracy, and can reduce the capacitance and size of the DC capacitor.
Hajime Toyoda, Takaaki Takahara
Filed: 13 Dec 18
Utility
Power conversion system and management apparatus for the same, and distributed power supply apparatus
14 Nov 23
A management apparatus periodically transmits information for setting a first voltage range and a second voltage range smaller than the first voltage range to a distribution power supply apparatus.
Hiroki Ishihara, Miwako Tanaka
Filed: 10 Dec 18
Utility
Orientation direction control device, optical communication terminal, optical communication system, and orientation direction control method
14 Nov 23
An orientation direction control device includes: an orientation direction control information acquisition unit to acquire orientation direction control information for controlling an orientation direction in which a first optical communication terminal as a first transmission/reception device transmits and receives light; and a capture and tracking control unit as an orientation direction control unit to control an orientation direction in which a second optical communication terminal as a second transmission/reception device transmits and receives the light or a radio wave on the basis of the orientation direction control information acquired by the orientation direction control information acquisition unit.
Yuta Takemoto, Toshiyuki Ando
Filed: 9 Jun 22
Utility
Printed wiring board and electronic device
14 Nov 23
A printed wiring board includes an electrode pad to be soldered to an electrode of an electronic component, an electrode pad to be soldered to an electrode of the electronic component, a barrier conductor continuous with the electrode pad, and a barrier conductor continuous with the electrode pad, the barrier conductor and the barrier conductors are located at positions facing each other with a gap area therebetween, the barrier conductor and the electrode pads are positioned such that the electrode pad faces the gap area with the barrier conductor therebetween and that the electrode pad faces the gap area with the barrier conductor therebetween, and the gap area is an area in which an adhesive is placed when adhering the electronic component.
Koji Shigeta, Masato Morita, Hironobu Fukushima, Masahiro Koyama, Naoki Matsumoto
Filed: 25 Mar 19
Utility
Cooling device and power conversion device
14 Nov 23
A cooling device includes a heat-receiving block, a heat conductor, and first heat pipes.
Takahiro Masuyama, Hirokazu Takabayashi
Filed: 22 Feb 19
Utility
Induction heating cooking apparatus
14 Nov 23
An induction heating cooking apparatus includes a plurality of heating coils aligned in at least one row on a flat surface, a plurality of inverter circuits each configured to supply a high-frequency current to the corresponding one of the plurality of heating coils, and a controller configured to control driving of the plurality of inverter circuits.
Hayato Yoshino, Jun Bunya, Takeshi Iida, Ikuro Suga
Filed: 23 Feb 18