Patents by Inventor Yuichi Nishimura

Yuichi Nishimura 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: 20210289365
    Abstract: A communication system includes: storage to store location information of each of a plurality of devices capable of wireless multi-hop communication, site configuration information including location and size information of an obstacle present at a site of the plurality of devices, and communication quality information between devices; a determination unit determines whether a repeater needs to be added for each of the plurality of devices, based on communication quality information; and a decision unit calculates an expected value related to attenuation of received power between the first and second devices caused by the obstacle, and decides a location for the determination unit to add the repeater based on location information of the first device determined, location information of the second device different from the first device and communicated with the first device through the repeater, the communication quality information between the first and second device, and the site configuration information.
    Type: Application
    Filed: December 22, 2017
    Publication date: September 16, 2021
    Applicant: HITACHI, LTD.
    Inventors: Ryo NAKANO, Yuichi IGARASHI, Takuma NISHIMURA
  • Patent number: 10988452
    Abstract: An object of the present invention is to provide a method for producing 5-hydroxymethyl-2-furfural (5-HMF) with suppressed production of byproducts. The present invention provides a method for producing 5-HMF, comprising the step of performing a dehydration reaction of a carbohydrate comprising a hexose as a constituent sugar or a derivative thereof to produce 5-hydroxymethyl-2-furfural, wherein the dehydration reaction is performed in the presence of activated carbon. The present invention also provides a method for producing a carbohydrate composition comprising 5-hydroxymethyl-2-furfural, comprising the step of heating a carbohydrate composition comprising one or more selected from the group consisting of a carbohydrate comprising a hexose as a constituent sugar and a derivative thereof, in the presence of an acid catalyst and activated carbon at a temperature of 90 to 400° C.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: April 27, 2021
    Assignee: Nihon Shokuhin Kako Co., Ltd.
    Inventors: Yuichi Nishimura, Hitoshi Takaguchi, Norihisa Hamaguchi
  • Patent number: 10908429
    Abstract: An extreme ultraviolet light generation system according to one aspect of the present disclosure includes: a pulse laser apparatus configured to output a pulse laser beam, the pulse laser beam being supplied to a predetermined region in a chamber in which plasma containing extreme ultraviolet light is to be generated; a sensor configured to detect a beam size of the pulse laser beam; an actuator configured to change the beam size; and a controller. The controller performs, based on a first algorithm, first control that controls the actuator by a first control amount in a beam size minifying direction when the beam size has exceeded a first upper limit threshold in one burst duration, and then performs, based on a second algorithm, second control that controls the actuator by a second control amount smaller than the first control amount so that the beam size becomes closer to a target value.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: February 2, 2021
    Assignee: Gigaphoton Inc.
    Inventors: Takayuki Yabu, Yuichi Nishimura
  • Publication number: 20200399237
    Abstract: An object of the present invention is to provide a method for producing 5-hydroxymethyl-2-furfural (5-HMF) with suppressed production of byproducts. The present invention provides a method for producing 5-HMF, comprising the step of performing a dehydration reaction of a carbohydrate comprising a hexose as a constituent sugar or a derivative thereof to produce 5-hydroxymethyl-2-furfural, wherein the dehydration reaction is performed in the presence of activated carbon. The present invention also provides a method for producing a carbohydrate composition comprising 5-hydroxymethyl-2-furfural, comprising the step of heating a carbohydrate composition comprising one or more selected from the group consisting of a carbohydrate comprising a hexose as a constituent sugar and a derivative thereof, in the presence of an acid catalyst and activated carbon at a temperature of 90 to 400° C.
    Type: Application
    Filed: December 7, 2018
    Publication date: December 24, 2020
    Inventors: Yuichi Nishimura, Hitoshi Takaguchi, Norihisa Hamaguchi
  • Publication number: 20200393687
    Abstract: An extreme ultraviolet light generation system according to one aspect of the present disclosure includes: a pulse laser apparatus configured to output a pulse laser beam, the pulse laser beam being supplied to a predetermined region in a chamber in which plasma containing extreme ultraviolet light is to be generated; a sensor configured to detect a beam size of the pulse laser beam; an actuator configured to change the beam size; and a controller. The controller performs, based on a first algorithm, first control that controls the actuator by a first control amount in a beam size minifying direction when the beam size has exceeded a first upper limit threshold in one burst duration, and then performs, based on a second algorithm, second control that controls the actuator by a second control amount smaller than the first control amount so that the beam size becomes closer to a target value.
    Type: Application
    Filed: April 20, 2020
    Publication date: December 17, 2020
    Applicant: Gigaphoton Inc.
    Inventors: Takayuki YABU, Yuichi NISHIMURA
  • Patent number: 10692474
    Abstract: A keyboard instrument includes a plurality of key blocks, each including key main bodies, connecting sections, and a supporting section. Each key main body has a top surface that can be pressed by a user to play the keyboard instrument. Each connecting section extends from a key main body and deforms in response to pressing at the top surface of the key main body. The supporting section supports the key main bodies as one key block through the connecting sections. The key blocks are stacked at the supporting section in an instrument case so that a plurality of connecting sections of one key block and a plurality of connecting sections of another key block overlap each other. In at least one key block, each connecting section extends from a top surface side of the corresponding key main body.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: June 23, 2020
    Assignee: CASIO COMPUTER CO., LTD.
    Inventors: Toshiya Kuno, Hirokazu Taniguchi, Yuichi Nishimura
  • Publication number: 20200168749
    Abstract: An edge-incident light receiving element is equipped with a light receiving portion formed near a first surface of a semiconductor substrate, a concave reflective portion formed at a second surface of the semiconductor substrate that opposes the first surface, and a planar reflective portion formed between the first surface and the second surface, and the planar reflective portion reflects incident light on an edge surface of the semiconductor substrate that is perpendicular to the first surface and to the second surface toward the concave reflective portion, and the concave reflective portion reflects the incident light reflected by the planar reflective portion so as to condense on the light receiving portion.
    Type: Application
    Filed: July 25, 2017
    Publication date: May 28, 2020
    Inventors: Yuichi NISHIMURA, Etsuji OMURA
  • Patent number: 10609803
    Abstract: An EUV light generating apparatus includes: EUV light sensors configured to measure energy of EUV light from mutually different directions, the EUV light being generated by applying laser light to a target supplied to a predetermined region in a chamber; an application position adjusting unit configured to adjust an application position of the laser light to the target supplied to the predetermined region; and a controller configured to control the application position adjusting unit such that a centroid of the EUV light becomes a target desired centroid, the centroid of the EUV light being specified from measurement results of the EUV light sensors. The controller calibrates the target desired centroid based on EUV light centroids obtained from the energy of the EUV light measured by the EUV light sensors, and a parameter related to the measured energy of the EUV light corresponding to the EUV light centroids.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: March 31, 2020
    Assignee: Gigaphoton Inc.
    Inventors: Yuichi Nishimura, Yoshifumi Ueno, Takayuki Yabu
  • Publication number: 20200043445
    Abstract: A keyboard instrument includes a plurality of key blocks, each including key main bodies, connecting sections, and a supporting section. Each key main body has a top surface that can be pressed by a user to play the keyboard instrument. Each connecting section extends from a key main body and deforms in response to pressing at the top surface of the key main body. The supporting section supports the key main bodies as one key block through the connecting sections. The key blocks are stacked at the supporting section in an instrument case so that a plurality of connecting sections of one key block and a plurality of connecting sections of another key block overlap each other. In at least one key block, each connecting section extends from a top surface side of the corresponding key main body.
    Type: Application
    Filed: October 11, 2019
    Publication date: February 6, 2020
    Applicant: CASIO COMPUTER CO., LTD.
    Inventors: Toshiya KUNO, Hirokazu TANIGUCHI, Yuichi NISHIMURA
  • Patent number: 10531551
    Abstract: The extreme ultraviolet light generating apparatus includes a target supply unit to output a target, a driver laser to output a driver laser beam with which the target is irradiated, a guide laser to output a guide laser beam, a beam combiner to have optical paths of the driver laser beam and the guide laser beam substantially coincide with each other and output these beams, a first optical element including a first actuator to adjust an optical path of the driver laser beam to be incident on the beam combiner, a second optical element including a second actuator to adjust an optical path of the guide laser beam to be incident on the beam combiner, a sensor to detect the guide laser beam outputted from the beam combiner to output detected data, and a controller to receive the detected data, control the second actuator based on the detected data, and control the first actuator based on an amount of controlling of the second actuator.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: January 7, 2020
    Assignee: Gigaphoton Inc.
    Inventors: Takayuki Yabu, Yuichi Nishimura
  • Publication number: 20190361361
    Abstract: An EUV light generating apparatus includes: EUV light sensors configured to measure energy of EUV light from mutually different directions, the EUV light being generated by applying laser light to a target supplied to a predetermined region in a chamber; an application position adjusting unit configured to adjust an application position of the laser light to the target supplied to the predetermined region; and a controller configured to control the application position adjusting unit such that a centroid of the EUV light becomes a target centroid, the centroid of the EUV light being specified from measurement results of the EUV light sensors. The controller calibrates the target centroid based on EUV light centroids obtained from the energy of the EUV light measured by the EUV light sensors, and a parameter related to the measured energy of the EUV light corresponding to the EUV light centroids.
    Type: Application
    Filed: August 5, 2019
    Publication date: November 28, 2019
    Applicant: Gigaphoton Inc.
    Inventors: Yuichi NISHIMURA, Yoshifumi UENO, Takayuki YABU
  • Patent number: 10482851
    Abstract: A keyboard instrument includes a plurality of key blocks, and an instrument case. Each key block includes, a plurality of key main bodies, an area of the top surface abutting one edge side of the key main body in a longitudinal direction is pressed by a user; a plurality of connecting sections, the connecting section is deformed in response to be pressed by the user; and a supporting section which supports the plurality of key main bodies as one key block through the plurality of connecting sections. The plurality of supporting sections included in the plurality of key blocks are piled up in a direction intersecting with the longitudinal direction in the instrument case. The plurality of connecting sections included in one key block and the plurality of connecting sections included in another key block are overlapped each other in the instrument case.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: November 19, 2019
    Assignee: CASIO COMPUTER CO., LTD.
    Inventors: Toshiya Kuno, Hirokazu Taniguchi, Yuichi Nishimura
  • Publication number: 20190330172
    Abstract: An object of the present invention is to provide a method for producing 5-hydroxymethyl-2-furfural (5-HMF) suitable for industrial-scale production and a novel catalyst composition for use in synthesizing 5-HMF. The present invention provides a method for producing 5-HMF comprising performing a dehydration reaction of a carbohydrate comprising a hexose as a constituent sugar or a derivative thereof by using activated carbon as a catalyst; and a catalyst composition for use in the reaction for producing 5-HMF from a carbohydrate comprising a hexose as a constituent sugar through a dehydration reaction, the catalyst composition comprising activated carbon.
    Type: Application
    Filed: May 9, 2017
    Publication date: October 31, 2019
    Inventors: Yuichi Nishimura, Norihisa Hamaguchi, Hitoshi Takaguchi
  • Publication number: 20190289707
    Abstract: An EUV light generation system includes: a target supply unit; a prepulse laser that outputs a prepulse laser beam; a main pulse laser that outputs a main pulse laser; a light focusing optical system that focuses the prepulse and main pulse laser beams on a predetermined region; an actuator that changes a focusing position of the prepulse laser beam by the light focusing optical system; a first sensor that captures an image of a target; and a control unit that stores a reference position of the actuator, calculates a predetermined parameter on the target after irradiation with the prepulse laser beam and before irradiation with the main pulse laser beam based on image data obtained from the first sensor, and controls the actuator to approach the reference position if the predetermined parameter does not satisfy a first condition.
    Type: Application
    Filed: June 7, 2019
    Publication date: September 19, 2019
    Applicant: Gigaphoton Inc.
    Inventors: Yuichi NISHIMURA, Takayuki YABU, Yoshifumi UENO
  • Patent number: 10303061
    Abstract: An extreme ultraviolet light generation device includes: an EUV sensor configured to measure energy of extreme ultraviolet light generated when a target is irradiated with a plurality of laser beams in a predetermined region in a chamber; an irradiation position adjustment unit configured to adjust at least one of irradiation positions of the laser beams with which the target is irradiated in the predetermined region; an irradiation timing adjustment unit configured to adjust at least one of irradiation timings of the laser beams with which the target is irradiated in the predetermined region; and a control unit configured to control the irradiation position adjustment unit and the irradiation timing adjustment unit, the control unit controlling the irradiation position adjustment unit and then controlling the irradiation timing adjustment unit based on a measurement result of the EUV sensor.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: May 28, 2019
    Assignee: Gigaphoton Inc.
    Inventors: Yuichi Nishimura, Takayuki Yabu, Yoshifumi Ueno
  • Patent number: 10251254
    Abstract: An extreme ultraviolet light generating apparatus includes: EUV light sensors configured to measure energy of extreme ultraviolet light from mutually different directions, the extreme ultraviolet light being generated by applying laser light to a target supplied to a predetermined region in a chamber; an application position adjusting unit configured to adjust an application position of the laser light to the target supplied to the predetermined region; and a controller configured to control the application position adjusting unit such that a centroid of the extreme ultraviolet light becomes a targeted centroid, the centroid of the extreme ultraviolet light being specified from measurement results of the EUV light sensors, the controller controlling the application position adjusting unit such that the application position is scanned in accordance with reference scan points mutually different in position, and calibrating the targeted centroid based on the measurement results acquired for the reference scan po
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: April 2, 2019
    Assignee: Gigaphoton Inc.
    Inventors: Yuichi Nishimura, Takayuki Yabu
  • Publication number: 20190096370
    Abstract: A keyboard instrument includes a plurality of key blocks, and an instrument case. Each key block includes, a plurality of key main bodies, an area of the top surface abutting one edge side of the key main body in a longitudinal direction is pressed by a user; a plurality of connecting sections, the connecting section is deformed in response to be pressed by the user; and a supporting section which supports the plurality of key main bodies as one key block through the plurality of connecting sections. The plurality of supporting sections included in the plurality of key blocks are piled up in a direction intersecting with the longitudinal direction in the instrument case. The plurality of connecting sections included in one key block and the plurality of connecting sections included in another key block are overlapped each other in the instrument case.
    Type: Application
    Filed: September 19, 2018
    Publication date: March 28, 2019
    Applicant: CASIO COMPUTER CO., LTD.
    Inventors: Toshiya KUNO, Hirokazu TANIGUCHI, Yuichi NISHIMURA
  • Patent number: 10225918
    Abstract: An extreme ultraviolet light generating apparatus moves a generation position of extreme ultraviolet light based on an instruction from an external device and includes a chamber in which a target fed therein is irradiated with laser light so that the extreme ultraviolet light is generated from the target; a target feeder configured to output and feed the target into the chamber; a condensing mirror configured to condense the laser light on the target fed into the chamber; a stage configured to regulate a position of the target feeder; a manipulator configured to regulate a position of the condensing mirror; and a control unit configured to be able to control at least one of the stage, the manipulator, and a radiation timing of the laser light to the target, in a feedforward method, when the generation position is moved during generation of the extreme ultraviolet light.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: March 5, 2019
    Assignee: Gigaphoton Inc.
    Inventors: Yuichi Nishimura, Takayuki Yabu
  • Publication number: 20180352641
    Abstract: An extreme ultraviolet light generating apparatus moves a generation position of extreme ultraviolet light based on an instruction from an external device and includes a chamber in which a target fed therein is irradiated with laser light so that the extreme ultraviolet light is generated from the target; a target feeder configured to output and feed the target into the chamber; a condensing mirror configured to condense the laser light on the target fed into the chamber; a stage configured to regulate a position of the target feeder; a manipulator configured to regulate a position of the condensing mirror; and a control unit configured to be able to control at least one of the stage, the manipulator, and a radiation timing of the laser light to the target, in a feedforward method, when the generation position is moved during generation of the extreme ultraviolet light.
    Type: Application
    Filed: August 6, 2018
    Publication date: December 6, 2018
    Applicant: GIGAPHOTON INC.
    Inventors: Yuichi NISHIMURA, Takayuki YABU
  • Publication number: 20180343729
    Abstract: An extreme ultraviolet light generating apparatus includes: EUV light sensors configured to measure energy of extreme ultraviolet light from mutually different directions, the extreme ultraviolet light being generated by applying laser light to a target supplied to a predetermined region in a chamber; an application position adjusting unit configured to adjust an application position of the laser light to the target supplied to the predetermined region; and a controller configured to control the application position adjusting unit such that a centroid of the extreme ultraviolet light becomes a targeted centroid, the centroid of the extreme ultraviolet light being specified from measurement results of the EUV light sensors, the controller controlling the application position adjusting unit such that the application position is scanned in accordance with reference scan points mutually different in position, and calibrating the targeted centroid based on the measurement results acquired for the reference scan po
    Type: Application
    Filed: August 6, 2018
    Publication date: November 29, 2018
    Applicant: Gigaphoton Inc.
    Inventors: Yuichi NISHIMURA, Takayuki YABU