Patents by Inventor Mitsuaki Kato

Mitsuaki Kato 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: 10847620
    Abstract: A semiconductor device comprises a semiconductor chip and a mounting substrate. The semiconductor chip has an element structure including: a silicon carbide substrate that has a hexagonal crystal structure; a gate electrode that is disposed on a part above a first surface corresponding to a (0001) plane or a (000-1) plane of the silicon carbide substrate; an insulating film that is interposed between the silicon carbide substrate and the gate electrode; and a source and a drain that are disposed with respect to the silicon carbide substrate and the gate electrode such that at least a part of a channel through which a carrier moves extends in a <1-100> direction of crystal orientation of the silicon carbide substrate. The mounting substrate is fixed with the semiconductor chip such that compressive stress in a <11-20> direction of crystal orientation of the silicon carbide substrate is applied to the semiconductor chip at least in operation.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: November 24, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Akihiro Goryu, Mitsuaki Kato, Kenji Hirohata
  • Publication number: 20200207072
    Abstract: A screen printing machine for appropriately contact between a mask and a board, comprising: a mask-holding device configured to hold a mask; a board-positioning device configured to hold a board and to position the held board with respect to a mask held by the mask-holding device from below; a squeegee device configured to spread a cream solder with respect to the mask; a height-measuring device configured to measure the height of the mask and the board; a control device configured to control each device, and to calculate the thickness of a mask lower layer, integrally formed with the mask, based on the measurement values obtained from the height-measuring device; and an operation display device configured to input operation and to display calculation values from the control device, and the like.
    Type: Application
    Filed: September 7, 2017
    Publication date: July 2, 2020
    Applicant: FUJI CORPORATION
    Inventor: Mitsuaki KATO
  • Publication number: 20200189261
    Abstract: A printing device including a conveyance rod which discharges and introduces a screen mask and a board support member; and a control section. The control section performs a mask exchange process including a mask discharge process of discharging the screen mask to be discharged and a mask introduction process of introducing the screen mask to be introduced by controlling a conveyance rod. In addition, the control section performs a support member exchange process including a support member discharge process of discharging the board support member to be discharged and a support member introduction process of introducing the support member to be introduced by controlling the conveyance rod.
    Type: Application
    Filed: February 20, 2020
    Publication date: June 18, 2020
    Applicant: FUJI CORPORATION
    Inventors: Ritsuo HIRUKAWA, Yasunori KAMEGAI, Takeshi KONDO, Mitsuaki KATO, Tsuyoshi MIZUKOSHI, Atsushi TORII, Jun IISAKA, Kazuhiro KUSUNOKI
  • Patent number: 10589514
    Abstract: A printing device including a conveyance rod which discharges and introduces a screen mask and a board support member; and a control section. The control section performs a mask exchange process including a mask discharge process of discharging the screen mask to be discharged and a mask introduction process of introducing the screen mask to be introduced by controlling a conveyance rod. In addition, the control section performs a support member exchange process including a support member discharge process of discharging the board support member to be discharged and a support member introduction process of introducing the support member to be introduced by controlling the conveyance rod.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: March 17, 2020
    Assignee: FUJI CORPORATION
    Inventors: Ritsuo Hirukawa, Yasunori Kamegai, Takeshi Kondo, Mitsuaki Kato, Tsuyoshi Mizukoshi, Atsushi Torii, Jun Iisaka, Kazuhiro Kusunoki
  • Publication number: 20200077548
    Abstract: A first conveyor belt and second conveyor belt are disposed on guide rail which is disposed so as to extend in a circuit substrate conveyance direction. Then, the circuit substrate supported by both the conveyor belts of the first conveyor belt and the second conveyor belt is held by substrate holding device, and work is performed on the held circuit substrate. In the transfer device having such a structure, for example, when the circuit substrate on which an operation has been completed is conveyed out by the second conveyor belt, a new circuit substrate is conveyed into the transfer device by the first conveyor belt. In this way, it is possible to perform printing work on a new circuit substrate at an early stage and shorten a cycle time.
    Type: Application
    Filed: December 15, 2016
    Publication date: March 5, 2020
    Applicant: FUJI CORPORATION
    Inventors: Ritsuo HIRUKAWA, Takeshi KONDO, Shoji FUKAKUSA, Mitsuaki KATO, Atsushi TORII, Jun IISAKA
  • Publication number: 20190351670
    Abstract: A screen printer comprising: a board positioning device configured to convey and hold a board to a work position in the screen printer; a mask holding device configured to hold a mask above the work position; a squeegee device configured to spread a cream solder on a mask on the board; a correction device configured to correct a relative position between the board of the board positioning device and the mask of the mask holding device; a control device configured to acquire inspection data of a print state from a print inspection device provided inside or outside the screen printer and perform correction control on the correction device by a correction value corrected according to a deviation amount of printing based on the inspection data; and an input device configured to include an instruction input section that senses an inspection instruction operation of an operator and transmit, to the control device, an inspection data acquisition signal for acquiring the inspection data of the print state from the pr
    Type: Application
    Filed: January 6, 2017
    Publication date: November 21, 2019
    Applicant: FUJI CORPORATION
    Inventor: Mitsuaki KATO
  • Publication number: 20190337290
    Abstract: A printing apparatus of the present disclosure is for performing printing of a viscous fluid onto a print target using a screen mask, the printing apparatus including: a moving section configured to perform at least one of moving an exchangeable member to an exchange position or loading and unloading of the exchangeable member, for at least two types of the exchangeable member that, out of a cartridge configured to house the viscous fluid, a squeegee, a screen mask, a cleaning member used to clean the screen mask, and a support member configured to fix the print target, include at least one out of the cartridge, the squeegee, and the cleaning member; and an exchange control section configured to control the moving section to perform exchange processing of exchanging the exchangeable member.
    Type: Application
    Filed: December 5, 2016
    Publication date: November 7, 2019
    Applicant: FUJI CORPORATION
    Inventors: Ritsuo HIRUKAWA, Takeshi KONDO, Mitsuaki KATO, Atsushi TORII, Jun IISAKA
  • Publication number: 20190224960
    Abstract: A screen printer including a squeegee device to spread from above solder paste on a stencil; a clamp device to grip a board conveyed to a position below the stencil by a board conveyance member that is flat and provided with a board holding portion in a central opening portion, the clamp device gripping the board via the board conveyance member; a board supporting device to support the board from below and move the board in a vertical direction inside the clamp device; and a raising and lowering device to move the board supported inside the clamp device in the vertical direction and position the board at a printing position, and the clamp device is provided with a board printing guide member to be removably attached to an upper end of a pair of clamp members to sandwich the board conveyance member in a widthwise direction.
    Type: Application
    Filed: October 13, 2016
    Publication date: July 25, 2019
    Applicant: FUJI CORPORATION
    Inventors: Mitsuaki KATO, Yoshimune YOKOI
  • Publication number: 20190221646
    Abstract: A semiconductor device comprises a semiconductor chip and a mounting substrate. The semiconductor chip has an element structure including: a silicon carbide substrate that has a hexagonal crystal structure; a gate electrode that is disposed on a part above a first surface corresponding to a (0001) plane or a (000-1) plane of the silicon carbide substrate; an insulating film that is interposed between the silicon carbide substrate and the gate electrode; and a source and a drain that are disposed with respect to the silicon carbide substrate and the gate electrode such that at least a part of a channel through which a carrier moves extends in a <1-100> direction of crystal orientation of the silicon carbide substrate. The mounting substrate is fixed with the semiconductor chip such that compressive stress in a <11-20> direction of crystal orientation of the silicon carbide substrate is applied to the semiconductor chip at least in operation.
    Type: Application
    Filed: August 30, 2018
    Publication date: July 18, 2019
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Akihiro GORYU, Mitsuaki Kato, Kenji Hirohata
  • Publication number: 20190219628
    Abstract: An inspection device comprises: a detecting unit that is connected to a plurality of semiconductor chips having mutually different rates of change of electrical resistance with respect to stress loading direction, and that detects an electrical resistance value of each semiconductor chip from electric current flowing in each semiconductor chip; a first memory unit that is used to hold model data meant for converting an electrical resistance value into a characteristic value indicating at least either temperature, or stress, or strain; a converting unit that converts the electrical resistance value of each semiconductor chip as detected by the detecting unit into the characteristic value using the model data held in the first memory unit; and a second memory unit that is used to store the characteristic value, which is obtained by conversion by the converting unit, as time-series data for each of the plurality of semiconductor chips.
    Type: Application
    Filed: August 30, 2018
    Publication date: July 18, 2019
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Mitsuaki KATO, Akihiro Goryu, Kenji Hirohata
  • Patent number: 10274185
    Abstract: According to one embodiment, a lighting device includes a hollow globe having an opening at an end thereof, a light source housed in the globe and including at least an LED, a pillar portion housed in the globe and supporting the light source, a cap connector directly connected to the pillar portion, or indirectly connected to the pillar portion via another member, and a cap attached to the cap connector and electrically connected to the light source. A thermally conductive layer is provided between the inner surface of the globe and the lateral surface of the pillar portion.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: April 30, 2019
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.
    Inventors: Mitsuaki Kato, Hiroshi Ohno, Katsumi Hisano, Hiroyasu Kondo, Ryoji Tsuda
  • Patent number: 10222050
    Abstract: According to one embodiment, a lighting device includes a hollow main body having thermal conductivity, a light source having at least a semiconductor light-emitting element, an accessory element, and an adiabatic member. The light source is thermally coupled to the main body. The accessory element has an allowable temperature limit different from that of the light source, and is accommodated in the main body. The adiabatic member divides the main body into a first region thermally coupled to the light source, and at least a second region thermally coupled to the accessory element and thermally isolated from the first region.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: March 5, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Mitsuaki Kato, Hiroshi Ohno, Katsumi Hisano, Tomonao Takamatsu
  • Publication number: 20190064248
    Abstract: A semiconductor device inspection apparatus according to embodiments comprises: an action unit that generates an internal stress in a predetermined direction in a semiconductor device; a stress controller that controls a magnitude of the internal stress generated in the semiconductor device by the action unit; a probe electrically connected to the semiconductor device; a probe controller that supplies a current to the semiconductor device via the probe; and a controller that screens the semiconductor device based on a first current flowing through the semiconductor device via the probe while the internal stress is not generated in the semiconductor device and a second current flowing through the semiconductor device via the probe while the action unit generates the internal stress in the semiconductor device.
    Type: Application
    Filed: March 5, 2018
    Publication date: February 28, 2019
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Akihiro GORYU, Mitsuaki Kato, Akira Kano, Kenji Hirohata
  • Patent number: 10206587
    Abstract: An image processing apparatus according to an embodiment includes a processing circuitry. The processing circuitry is configured to obtain images in a time series including images of a blood vessel of a subject and correlation information indicating a correlational relationship between physical indices of the blood vessel and function indices of the blood vessel related to vascular hemodynamics, calculate blood vessel morphology indices in a time series indicating morphology of the blood vessel of the subject, on a basis of the images in the time series, and identify a function index of the blood vessel of the subject, by using a physical index of the blood vessel of the subject obtained from the blood vessel morphology indices, on a basis of the correlation information.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: February 19, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Akira Kano, Kenji Hirohata, Junichiro Ooga, Mitsuaki Kato, Takuya Hongo, Akihiro Goryu, Shigeo Kaminaga, Yasuko Fujisawa, Satoshi Wakai, Yoshihiro Ikeda, Kazumasa Arakita
  • Patent number: 10180529
    Abstract: In one embodiment, an illumination device includes a light-guiding unit having a light output surface which outputs light and a back surface facing the light output surface, wherein the light-guiding unit has a curved surface in a region of the back surface farther than a first position on the back surface that is away by a first distance from an axis passing the light output surface and the back surface, and a rough surface in a region of the light output surface farther than a second position on the light output surface that is away by a second distance from the axis in a same direction as a direction from the axis toward the first position, and where an intersection of the axis and the back surface is an origin point, and a direction of the axis from the back surface to the light output surface is positive, a normal line of the curved surface intersects with the axis at the positive side of the axis, and an angle formed by a normal line vector at the second position in a direction toward the light output s
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: January 15, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiroshi Ohno, Yuichiro Yamamoto, Mitsuaki Kato, Tomonao Takamatsu, Masataka Shiratsuchi, Hiromichi Hayashihara, Hideo Tamura, Masahiko Yamamoto
  • Patent number: 10111635
    Abstract: An image processing apparatus according to an embodiment includes storage circuitry and processing circuitry. The storage circuitry stores therein fluid resistance data representing a correlation among a vascular shape, a blood flow rate, and a pressure loss. The processing circuitry extracts, from three-dimensional image data in which a blood vessel of a subject is rendered, vascular shape data representing a shape of the blood vessel. The processing circuitry performs fluid analysis based on the vascular shape data and the blood flow rate and the pressure loss that correspond to the vascular shape data and that are correlated by the fluid resistance data to derive a functional index related to a blood circulation state in the blood vessel of the subject.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: October 30, 2018
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Mitsuaki Kato, Kenji Hirohata, Akira Kano, Shinya Higashi, Shigeo Kaminaga, Yasuko Fujisawa, Satoshi Wakai
  • Patent number: 10107457
    Abstract: A lighting apparatus according to an embodiment includes a globe, an optical element including a scattering portion inside and transparent to visible light, and a light source disposed to be opposed to a light incident surface of the optical element. The scattering portion is disposed inside the globe.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: October 23, 2018
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.
    Inventors: Hiroshi Ohno, Mitsuaki Kato, Hiromichi Hayashihara, Hiroyasu Kondo, Ryoji Tsuda, Yasumasa Ooya
  • Patent number: 10091861
    Abstract: According to one embodiment, an electronic device capable of switching power on and power off by a switch outside the electronic device, the electronic device includes a determination unit, a detection unit, an output unit, and a control unit. The determination unit determines whether power is supplied from an AC power source or not. The detection unit detects a conductive state of the switch. The control unit performs at least one of cutting off power to be supplied to the output unit, supplying power from the AC power source to the output unit, and supplying power from a second power source different from the AC power source to the output unit.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: October 2, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takashi Usui, Mitsuaki Kato
  • Publication number: 20180266967
    Abstract: According to one embodiment, as optical test apparatus includes a pump beam generating unit, a probe beam generating unit; and a photodetector. The pump beam generating unit generates a pump beam for exciting an elastic wave in a specimen. The probe beam generating unit generates a probe beam. The photodetector receives the probe beam. A first light penetration depth of the probe beam relative to the specimen is longer than a second light penetration depth of the pump beam relative to the specimen.
    Type: Application
    Filed: August 31, 2017
    Publication date: September 20, 2018
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiroshi OHNO, Akihiro GORYU, Mitsuaki KATO, Hiroya KANO, Hideaki OKANO
  • Publication number: 20180162118
    Abstract: A printing device including a conveyance rod which discharges and introduces a screen mask and a board support member; and a control section. The control section performs a mask exchange process including a mask discharge process of discharging the screen mask to be discharged and a mask introduction process of introducing the screen mask to be introduced by controlling a conveyance rod. In addition, the control section performs a support member exchange process including a support member discharge process of discharging the board support member to be discharged and a support member introduction process of introducing the support member to be introduced by controlling the conveyance rod.
    Type: Application
    Filed: June 8, 2015
    Publication date: June 14, 2018
    Applicant: FUJI MACHINE MFG. CO., LTD.
    Inventors: Ritsuo HIRUKAWA, Yasunori KAMEGAI, Takeshi KONDO, Mitsuaki KATO, Tsuyoshi MIZUKOSHI, Atsushi TORII, Jun IISAKA, Kazuhiro KUSUNOKI