Patents by Inventor Junichi Itoh

Junichi Itoh 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).

  • Publication number: 20200359663
    Abstract: The present invention provides an aqueous pigment-material solution which has excellent thermal stability and less fading particularly even under an acidic condition, a method for producing the same, and a blue-colored beverage. Provided are an aqueous pigment-material solution including a pigment material containing 20 mmol to 200 mmol of polycarboxylic acid having one or more hydroxy groups, in terms of carboxylic acid equivalent, per 1 g of phycocyanin, in which when both the phycocyanin and the polycarboxylic acid are added such that a color value represented by absorbance at 620 nm is 2.5 to 5, an optical density per 1 cm of an optical path length at 800 nm is 0.05 or lower at a hydrogen ion concentration (pH) of 3 or lower, a method for producing the aqueous pigment-material solution, and a blue-colored beverage.
    Type: Application
    Filed: November 6, 2018
    Publication date: November 19, 2020
    Inventors: Hiromasa Nakamura, Hisayoshi Arai, Junichi Itoh, Mitsuteru Ishiwara
  • Patent number: 10778116
    Abstract: A three-phase inverter includes three series circuits that are connected in parallel to a capacitor connected in parallel to a DC voltage source. Each of the three series circuits includes two semiconductor switching elements connected in series. A connection point between the two semiconductor switching elements is used as an AC output terminal for each phase. The three-phase inverter generates PWM pulses of three phases including a PWM pulse of one phase, whose pulse width of a positive side pulse in one switching cycle is the largest, and including PWM pulses of the other two phases such that a positional relationship between positive side pulses of the other two phases is a positional relationship in which an overlapping range on a time axis is smaller as compared with a state in which a positive side pulse of one phase encompasses a positive side pulse of the other pulse.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: September 15, 2020
    Assignees: National University Corporation Nagaoka University of Technology, FUJI ELECTRIC CO., LTD.
    Inventors: Junichi Itoh, Koroku Nishizawa, Akio Toba, Akihiro Odaka
  • Patent number: 10763153
    Abstract: There is provided a holding apparatus which is capable of rotatably holding, while cooling to a cryogenic temperature, a to-be-processed object in a vacuum chamber. A holding apparatus for rotatably holding, while cooling, a to-be-processed object in a vacuum chamber Vc, has a stage on which the to-be-processed object is placed, a rotary drive device for rotatably supporting the stage, and a cooling device for cooling the stage. Provided that a stage surface side on which the to-be-processed object is placed is defined as an upside, the rotary drive device has: a tubular rotary shaft body which is mounted on a wall surface of the vacuum chamber, in a penetrating manner, through a first vacuum seal; a connection member for connecting an upper end part of the rotary shaft body and a lower surface of the stage in a manner to define a space below the stage; and a driving motor for driving to rotate the rotary shaft body.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: September 1, 2020
    Assignees: Ulvac, Inc., Ulvac Cryogenics Inc.
    Inventors: Yukihito Tashiro, Junichi Itoh, Hidenori Fukumoto, Kosuke Hidaka, Mitsuki Terashima
  • Publication number: 20200254983
    Abstract: A brake force control system configured to allow a driver to control brake force finely only by operating an accelerator pedal, and to decelerate a vehicle to a target speed only by operating the accelerator pedal. The control system calculates a target deceleration to travel through a target site at a target speed in accordance with a decelerating factor. If a reference deceleration generated by returning the accelerator pedal to an initial position is equal to or less than the target deceleration, the control system increases the reference deceleration.
    Type: Application
    Filed: January 30, 2020
    Publication date: August 13, 2020
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yusuke SUZUKI, Masaki OKAMURA, Junichi MURASE, Fumito ITOH
  • Publication number: 20200236791
    Abstract: A printed wiring board production method that forms a base film and a conductive pattern on the base film by an additive method or a subtractive method, includes a plating process that electroplates the conductive pattern on a surface of the base film, wherein the plating process includes a shield plate arranging process that arranges a shield plate between an anode and a printed wiring board substrate that forms a cathode, and a substrate arranging process that arranges the printed wiring board substrate in a plating tank, and wherein a distance between the shield plate and the printed wiring board substrate is 50 mm or greater and 150 mm or less.
    Type: Application
    Filed: May 21, 2018
    Publication date: July 23, 2020
    Inventors: Junichi MOTOMURA, Koji NITTA, Shoichiro SAKAI, Kenji TAKAHASHI, Maki IKEBE, Kousuke MIURA, Masahiro ITOH
  • Patent number: 10661395
    Abstract: A brazing sheet for brazing in an inert-gas atmosphere without using a flux has a core and a filler material clad to one side or both sides of the core. The core has a chemical composition that contains Mg: 0.35-0.8% (mass %; likewise hereinbelow), the remainder being composed of Al and unavoidable impurities. The filler material has a chemical composition that contains Si: 6-13% and Bi: 0.001-0.05% and Mg: limited less than 0.05%, the remainder being composed of Al and unavoidable impurities.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: May 26, 2020
    Assignee: UACJ CORPORATION
    Inventors: Junichi Ichikawa, Tomoki Yamayoshi, Yasunaga Itoh, Yutaka Yanagawa
  • Patent number: 10622907
    Abstract: A DC-DC converter includes a first full-bridge circuit and a second full-bridge circuit isolated by a transformer. The first full-bridge circuit includes switching elements, a first floating capacitor, and a second floating capacitor. The first full-bridge circuit operates in at least one of a full-bridge operation mode and a half-bridge operation mode. In switching of the operation mode, switching phases of the first full-bridge circuit are shifted in two portions in one cycle of a drive frequency, and shift amounts of the phases are determined such that positive and negative output voltages of the first full bridge circuit are balanced before and after the operation mode is switched.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: April 14, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Junichi Itoh, Hayato Higa
  • Publication number: 20200109486
    Abstract: A plating device for printed interconnect boards includes: a plating bath configured to store a plating solution; a plurality of metal jigs; an anode disposed to face the base boards for printed interconnect boards; and a mechanism configured to apply a voltage to the anode and to the base boards for printed interconnect boards, wherein the plurality of metal jigs include insulating shielding plates at areas facing the anode and include, on sides of the base boards for printed interconnect boards and between the base boards for printed interconnect boards and the shielding plates, exposed surfaces that are orthogonal to the base boards for printed interconnect boards.
    Type: Application
    Filed: March 19, 2018
    Publication date: April 9, 2020
    Inventors: Junichi MOTOMURA, Koji NITTA, Shoichiro SAKAI, Masahiro MATSUMOTO, Masahiro ITOH
  • Patent number: 10550542
    Abstract: A construction machine includes a hydraulic cylinder configured to drive an attachment, a hydraulic circuit configured to supply hydraulic oil to the hydraulic cylinder, an input device that is operated by an operator, and a controller configured to control the hydraulic circuit in at least one of a first control mode where the attachment is caused to generate a force corresponding to an operation amount of the input device and a second control mode where the attachment is driven at a velocity corresponding to the operation amount of the input device.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: February 4, 2020
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Junichi Okada, Takumi Itoh
  • Publication number: 20190386572
    Abstract: A DC-DC converter includes a first full-bridge circuit and a second full-bridge circuit isolated by a transformer. The first full-bridge circuit includes switching elements, a first floating capacitor, and a second floating capacitor. The first full-bridge circuit operates in at least one of a full-bridge operation mode and a half-bridge operation mode. In switching of the operation mode, switching phases of the first full-bridge circuit are shifted in two portions in one cycle of a drive frequency, and shift amounts of the phases are determined such that positive and negative output voltages of the first full bridge circuit are balanced before and after the operation mode is switched.
    Type: Application
    Filed: August 29, 2019
    Publication date: December 19, 2019
    Inventors: Junichi ITOH, Hayato HIGA
  • Publication number: 20190334454
    Abstract: A three-phase inverter includes three series circuits that are connected in parallel to a capacitor connected in parallel to a DC voltage source. Each of the three series circuits includes two semiconductor switching elements connected in series. A connection point between the two semiconductor switching elements is used as an AC output terminal for each phase. The three-phase inverter generates PWM pulses of three phases including a PWM pulse of one phase, whose pulse width of a positive side pulse in one switching cycle is the largest, and including PWM pulses of the other two phases such that a positional relationship between positive side pulses of the other two phases is a positional relationship in which an overlapping range on a time axis is smaller as compared with a state in which a positive side pulse of one phase encompasses a positive side pulse of the other pulse.
    Type: Application
    Filed: February 19, 2019
    Publication date: October 31, 2019
    Inventors: Junichi ITOH, Koroku NISHIZAWA, Akio TOBA, Akihiro ODAKA
  • Patent number: 10461637
    Abstract: A switching element with a small current capacity is provided to be able to be used in a DC-DC converter. The DC-DC converter includes a switching circuit in which a first switching element, a second switching element, a third switching element, and a fourth switching element are connected in series, a flying capacitor that is connected between a connection portion between the first switching element and the second switching element and a connection portion between the third switching element and the fourth switching element, a reactor that is connected between a connection portion between the second switching element and the third switching element and a positive electrode of an input unit, and a control circuit that turns on/off the switching element, in which the control circuit turns on/off the switching elements so that a peak value in a reactor current becomes equal to or smaller than a predetermined value.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: October 29, 2019
    Assignees: OMRON Corporation, NAGAOKA University of Technology
    Inventors: Junichi Itoh, Katsutaka Tanabe, Akihiro Funamoto, Koji Ando
  • Patent number: 10451943
    Abstract: Active matrix array devices are constituted by devices that have a function such as those of a display/light emitting device, a sensor, a memory or an actuator, and are arranged in a matrix array shape, and the expansion of usage in various fields and applications is expected. However, there is little similarity and compatibility in the forming process and materials between a device such as a display/light emitting device, a sensor, a memory, or an actuator, and a circuit portion that controls such a device in the matrix element, and therefore the device and the circuit portion are mutually restricting factors. This results in an increase in the manufacturing cost and limitation of the function. A conventional active matrix array device is manufactured by performing various process steps on the same substrate. Control circuit portions each including a transistor are formed in some of the process steps.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: October 22, 2019
    Assignee: PI-CRYSTAL INC.
    Inventors: Seiichiro Yamaguchi, Junichi Takeya, Masataka Itoh, Norikazu Shomoto, Mina Uematsu
  • Publication number: 20190313535
    Abstract: Research on practical realization of various types of printable devices has progressed, and the realization of devices in which these printable devices are integrated on a flexible board is expected. However, there is the problem that, if a plurality of printable devices are simply integrated on the same board, the area of the integrated device increases, and the yield ratio greatly decreases. An integration technique that solves the problem of an increase in the area and a decrease in the yield ratio is in demand. Electronic devices to be integrated are formed on individual boards, the boards are laid to overlap each other in a predetermined relationship, and then through-vias are formed at predetermined positions. With this, the electronic devices are electrically connected to each other, and function as an integrated device.
    Type: Application
    Filed: June 24, 2019
    Publication date: October 10, 2019
    Inventors: Junichi TAKEYA, Seiichiro YAMAGUCHI, Masataka ITOH
  • Publication number: 20190149044
    Abstract: A switching element with a small current capacity is provided to be able to be used in a DC-DC converter. The DC-DC converter includes a switching circuit in which a first switching element, a second switching element, a third switching element, and a fourth switching element are connected in series, a flying capacitor that is connected between a connection portion between the first switching element and the second switching element and a connection portion between the third switching element and the fourth switching element, a reactor that is connected between a connection portion between the second switching element and the third switching element and a positive electrode of an input unit, and a control circuit that turns on/off the switching element, in which the control circuit turns on/off the switching elements so that a peak value in a reactor current becomes equal to or smaller than a predetermined value.
    Type: Application
    Filed: September 17, 2018
    Publication date: May 16, 2019
    Applicants: OMRON Corporation, NAGAOKA University of Technology
    Inventors: Junichi ITOH, Katsutaka TANABE, Akihiro FUNAMOTO, Koji ANDO
  • Publication number: 20190103301
    Abstract: There is provided a holding apparatus which is capable of rotatably holding, while cooling to a cryogenic temperature, a to-be-processed object in a vacuum chamber. A holding apparatus for rotatably holding, while cooling, a to-be-processed object in a vacuum chamber Vc, has a stage on which the to-be-processed object is placed, a rotary drive device for rotatably supporting the stage, and a cooling device for cooling the stage. Provided that a stage surface side on which the to-be-processed object is placed is defined as an upside, the rotary drive device has: a tubular rotary shaft body which is mounted on a wall surface of the vacuum chamber, in a penetrating manner, through a first vacuum seal; a connection member for connecting an upper end part of the rotary shaft body and a lower surface of the stage in a manner to define a space below the stage; and a driving motor for driving to rotate the rotary shaft body.
    Type: Application
    Filed: May 26, 2017
    Publication date: April 4, 2019
    Applicants: ULVAC, INC., ULVAC CRYOGENICS INC.
    Inventors: Yukihito Tashiro, Junichi Itoh, Hidenori Fukumoto, Kosuke Hidaka, Mitsuki Terashima
  • Patent number: 10171004
    Abstract: A DC-DC converter includes a full-bridge circuit connected to a primary winding of a transformer and a full-bridge circuit connected to a secondary winding of the transformer. The full-bridge circuit includes a first series circuit including a first set of switching elements, a second series circuit including a second set of switching elements, a first charge-discharge capacitor connected to a node between a first pair of the first switching elements and a node between a second pair of first switching elements, and a second charge-discharge capacitor connected to a node between the a first pair of the second switching elements and a node between a second pair of the second switching elements. The full-bridge circuit can operate in one of a full-bridge operation mode and a half-bridge operation mode. The disclosed DC-DC converter can constantly operate with high efficiency even when the variation range of a load is wide.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: January 1, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Junichi Itoh, Hayato Higa
  • Publication number: 20180305807
    Abstract: In a method of forming a carbon film of this invention, a target made of carbon is used, and in a state in which leakage magnetic field Mf is being functioned on a front surface side of the target, electric power is applied to the target to sputter, thereby forming a carbon film on a surface of a to-be-processed object. At this time, a region for the leakage magnetic field to function on the target surface is made local, and the region for the leakage magnetic field to function is periodically changed by relatively moving the region relative to the target from an origin on the target surface back to the origin. Also, a product of an average magnetic field strength of the leakage magnetic field at a predetermined position on the target surface and applied electric power is kept below 125 G·kW.
    Type: Application
    Filed: August 22, 2016
    Publication date: October 25, 2018
    Applicant: ULVAC, INC.
    Inventors: Shinji Kohari, Junichi Itoh, Kazushi Fuse, Mitsunori Henmi
  • Patent number: 10033290
    Abstract: There is disclosed a power conversion apparatus 3 for converting polyphase ac power directly to ac power. A conversion circuit includes first switching devices 311, 313, 315 and second switching devices 312, 314, 316 connected, respectively, with the phases R, S, T of the polyphase ac power, and configured to enable electrical switching operation in both directions. There are provided input lines R, S, T connected with input terminals of the switching devices and output lines P, N connected with output terminals of the switching devices. The output terminals of the first switching devices and the output terminals of the second switching devices are, respectively, arranged in a row. The first switching devices and second switching devices are arranged side by side with respect to a direction of the rows. The output lines are disposed below the input lines in an up and down direction.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: July 24, 2018
    Assignees: NISSAN MOTOR CO., LTD., NAGAOKA UNIVERSITY OF TECHNOLOGY
    Inventors: Hironori Koyano, Takamasa Nakamura, Masao Saito, Kouji Yamamoto, Tsutomu Matsukawa, Manabu Koshijo, Junichi Itoh, Yoshiya Ohnuma
  • Publication number: 20180183345
    Abstract: A DC-DC converter includes a full-bridge circuit connected to a primary winding of a transformer and a full-bridge circuit connected to a secondary winding of the transformer. The full-bridge circuit includes a first series circuit including a first set of switching elements, a second series circuit including a second set of switching elements, a first charge-discharge capacitor connected to a node between a first pair of the first switching elements and a node between a second pair of first switching elements, and a second charge-discharge capacitor connected to a node between the a first pair of the second switching elements and a node between a second pair of the second switching elements. The full-bridge circuit can operate in one of a full-bridge operation mode and a half-bridge operation mode. The disclosed DC-DC converter can constantly operate with high efficiency even when the variation range of a load is wide.
    Type: Application
    Filed: February 26, 2018
    Publication date: June 28, 2018
    Inventors: JUNICHI ITOH, Hayato Higa