Patents by Inventor Hisashi Goto

Hisashi Goto 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: 20200243332
    Abstract: A semiconductor substrate that is used as an underlying substrate for epitaxial crystal growth carried out by the HVPE method includes a ?-Ga2O3-based single crystal, and a principal plane that is a plane parallel to a [100] axis of the ?-Ga2O3-based single crystal. An epitaxial wafer includes the semiconductor substrate, and an epitaxial layer including a ?-Ga2O3-based single crystal and formed on the principal plane of the semiconductor substrate by epitaxial crystal growth using the HVPE method. A method for producing an epitaxial wafer includes by using the HVPE method, epitaxially growing an epitaxial layer including a ?-Ga2O3-based single crystal on a semiconductor substrate that includes a ?-Ga2O3-based single crystal and has a principal plane parallel to a [100] axis of the ?-Ga2O3-based single crystal.
    Type: Application
    Filed: November 16, 2016
    Publication date: July 30, 2020
    Applicants: TAMURA CORPORATION, National University Corporation Tokyo University of Agriculture and Technology
    Inventors: Ken GOTO, Yoshinao KUMAGAI, Hisashi MURAKAMI
  • Patent number: 10676841
    Abstract: A semiconductor substrate for being used as a base substrate for epitaxial crystal growth by HVPE method includes a ?-Ga2O3-based single crystal, and a principal surface that is a plane parallel to a [010] axis of the ?-Ga2O3-based single crystal. An epitaxial wafer includes the semiconductor substrate, and an epitaxial layer that includes a ?-Ga2O3-based single crystal and is formed on the principal surface of the semiconductor substrate by epitaxial crystal growth using the HVPE method. A method for manufacturing the epitaxial wafer includes forming the epitaxial layer by epitaxial crystal growth using the HVPE method on the semiconductor substrate.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: June 9, 2020
    Assignees: TAMURA CORPORATION, NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY
    Inventors: Ken Goto, Akinori Koukitu, Yoshinao Kumagai, Hisashi Murakami
  • Publication number: 20200102667
    Abstract: [Problem] To provide a crystal laminate structure having a ?-Ga2O3 based single crystal film in which a dopant is included throughout the crystal and the concentration of the dopant can be set across a broad range. [Solution] In one embodiment of the present invention, provided is a crystal laminate structure 1 which includes: a Ga2O3 based substrate 10; and a ?-Ga2O3 based single crystal film 12 formed by epitaxial crystal growth on a primary face 11 of the Ga2O3 based substrate 10 and including Cl and a dopant doped in parallel with the crystal growth at a concentration of 1×1013 to 5.0×1020 atoms/cm3.
    Type: Application
    Filed: December 3, 2019
    Publication date: April 2, 2020
    Applicants: TAMURA CORPORATION, NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY
    Inventors: Ken GOTO, Akinori KOUKITU, Yoshinao KUMAGAI, Hisashi MURAKAMI
  • Patent number: 10538862
    Abstract: A crystal laminate structure includes a Ga2O3-based substrate, and a ?-Ga2O3-based single crystal film formed by epitaxial crystal growth on a principal surface of the Ga2O3-based substrate. The ?-Ga2O3-based single crystal film includes Cl and a dopant doped in parallel with the crystal growth at a concentration of not less than 1×1013 atoms/cm3 and not more than 5.0×1020 atoms/cm3.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: January 21, 2020
    Assignees: TAMURA CORPORATION, NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY
    Inventors: Ken Goto, Akinori Koukitu, Yoshinao Kumagai, Hisashi Murakami
  • Publication number: 20190368007
    Abstract: The present invention provides a coated steel product including: a steel product; a coating layer that is coated on the surface of the steel product and that includes from 8 to 50% by mass of Mg, from 2.5 to 70.0% by mass of Al, and from 0.30 to 5.00% by mass of Ca, with the balance consisting of Zn and impurities; and an intermediate layer interposed between the steel product and the coating layer, in which the intermediate layer has a sea-island structure constituted by a sea portion composed of an Al—Fe alloy phase, and island portions including a Zn—Mg—Al alloy phase having a Mg content of 8% by mass or more, and in which the sea portion composed of the Al—Fe alloy phase has an area fraction of from 55 to 90%.
    Type: Application
    Filed: January 16, 2017
    Publication date: December 5, 2019
    Applicant: Nippon Steel Corporation
    Inventors: Kohei TOKUDA, Hisashi BABA, Nobuyuki SHIMODA, Kenichiro MATSUMURA, Yasuto GOTO
  • Patent number: 10410343
    Abstract: A reconstruction image is generated with a small number of updates, with the use of an iterative approximation method. A specified tomographic image of a subject is received, and a process is performed two or more times, where an update process is performed according to the iterative approximation method, using the tomographic image as an initial image and an update image is obtained. Then, an update vector corresponding to a difference between thus generated update images of the update process performed twice is multiplied by predetermined coefficients, so as to generate an estimated update vector. Using this vector, an update image is generated. Then, this update image is used as a new initial image, and a process is repeated where the update process is performed according to the iterative approximation method and an update image is obtained, thereby generating a tomographic image of the subject.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: September 10, 2019
    Assignee: HITACHI, LTD.
    Inventors: Hisashi Takahashi, Taiga Goto, Koichi Hirokawa
  • Patent number: 10398404
    Abstract: In order to provide a data processing device and the like, capable of performing highly accurate reference correction even in a case where an object protrudes in reference channels in most of the measurement views, an image processing device (data processing device) of an X-ray CT apparatus calculates a unit air calibration reference value which is a value per unit tube current of an air calibration reference value which is reference data measured during air calibration, calculates a reference value (estimated reference value) corresponding to an X-ray condition in the main scanning on the basis of an output tube current value in the main scanning and a unit air calibration reference value, and corrects normalized reference data obtained by normalizing a measured reference value in the main scanning with the estimated reference value, to be included in an allowable error range, so as to remove the influence of protrusion.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: September 3, 2019
    Assignee: HITACHI, LTD.
    Inventors: Taiga Goto, Hisashi Takahashi, Koichi Hirokawa
  • Patent number: 10395396
    Abstract: In order to reduce a metal artifact using a short process, without causing image quality deterioration, when a subject containing metal is imaged in an X-ray CT apparatus, the invention is such that a high frequency component is extracted utilizing the fact that a high frequency component is a structure in error projection data, which are a difference between primary corrected projection data wherein at least one portion of an artifact component caused by metal has been removed and photographed projection data acquired by imaging. The high frequency component, extracted while carrying out weighting in order to suppress the metal artifact, is restored to the primary corrected projection data, after which an image is reconstructed. Also, metal projection data used when compiling the primary corrected projection data are calculated from a value that is a CT value corresponding to soft tissue subtracted from a CT value of a metal region.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: August 27, 2019
    Assignee: HITACHI, LTD.
    Inventors: Taiga Goto, Hisashi Takahashi, Hideaki Fujii
  • Patent number: 10358466
    Abstract: A Wisteria floribunda monomeric lectin polypeptide is provided. The Wisteria floribunda monomeric lectin polypeptide includes any one of the amino acid sequences selected from the group consisting of: (1) the amino acid sequence represented by SEQ ID NO: 2; (2) the amino acid sequence defined in (1) above, except that one to 20 amino acids at positions other than Cys272 position is/are deleted, substituted, inserted, or added; and (3) the amino acid sequence defined in (1) or (2) above, further having an N-terminus deletion of one to 30 amino acids, in which Cys272 is alkylated, and the polypeptide is capable of specifically binding to a GalNAc terminal sugar chain.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: July 23, 2019
    Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Takashi Sato, Yasunori Chiba, Hiroaki Tateno, Hiroyuki Kaji, Masanori Goto, Hisashi Narimatsu
  • Publication number: 20190180482
    Abstract: In order to determine noise intensity more accurately by a projection data division method using data after fan-parallel conversion, a plurality of projection data obtained by irradiating a scan object with radiations are received and subjected to prescribed data conversion; data after the conversion is divided into two or more sets; a reconstructed image is generated for each set of data; and the generated reconstructed image for each of the sets is subtracted to generate a difference image. An index indicating pixel value variation for at least one prescribed region on the difference image is calculated, the value of the index is corrected by a previously calculated correction value, and the corrected index value is regarded as noise intensity of the region.
    Type: Application
    Filed: June 16, 2017
    Publication date: June 13, 2019
    Applicant: Hitachi, Ltd.
    Inventors: Hisashi TAKAHASHI, Taiga GOTO, Koichi HIROKAWA
  • Patent number: 10317368
    Abstract: A defect inspection device configured to measure a surface shape of an inspection target using light applied to the inspection target via a spatial light phase modulator based on an interference state of reflected light from the inspection target obtained via the spatial light phase modulator, to measure magnetic field distribution of a surface of the inspection target magnetized by an excitation device for magnetizing the inspection target using light applied to the inspection target via the spatial light phase modulator based on an interference state of reflected light from the inspection target obtained via the spatial light phase modulator, and to separate data of a magnetic field specific portion which exists on the surface of the inspection target from magnetic field distribution data which is a measurement result of magnetic field distribution of the inspection target based on surface shape data which is a measurement result of the surface shape of the inspection target, to suppress deterioration of me
    Type: Grant
    Filed: November 28, 2014
    Date of Patent: June 11, 2019
    Assignee: HITACHI, LTD.
    Inventors: Hisashi Endou, Hiroyuki Takagi, Taichi Goto, Mitsuteru Inoue
  • Patent number: 10303082
    Abstract: An image forming apparatus executes an image formation process through which a developer image is formed on an image carrier by developing an electrostatic latent image while rotating a developer carrier in a forward direction, a voltage controller controls development and regulating voltages after the image formation process such that a magnitude relationship between the development regulating voltages becomes inverted from that during the image formation process, and after finishing the image formation process, in a state where the magnitude relationship between the development and regulating voltages is inverted from that during the image formation, the drive controller rotates the developer carrier in the forward direction for a prescribed period, and afterwards rotates the developer carrier in a reverse direction for another prescribed period.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: May 28, 2019
    Assignee: Oki Data Corporation
    Inventors: Fumitaka Ozeki, Takuya Goto, Kentaro Hasegawa, Susumu Yamamoto, Kazuoki Katayama, Tsukasa Hirayama, Hisashi Soga
  • Publication number: 20180216485
    Abstract: A steam turbine valve drive apparatus in an embodiment includes a piston, a cylinder, a bidirectional pump, a servo motor, and a quick closing mechanism. The cylinder houses the piston in an inner space thereof, the inner space being partitioned by the piston into a first hydraulic chamber and a second hydraulic chamber. The quick closing mechanism executes a quick closing operation of closing the steam valve unit more quickly than the closing operation. Here, the quick closing mechanism executes the quick closing operation by feeding the working oil accumulated in an accumulator to the second hydraulic chamber and draining the working oil from the first hydraulic chamber.
    Type: Application
    Filed: January 4, 2018
    Publication date: August 2, 2018
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Energy Systems & Solutions Comparation
    Inventors: Takuhiro TSUNEKAWA, Yuichi NAKAMURA, Koichi NAGAISHI, Toshihiko ENDO, Hisashi GOTO
  • Patent number: 9671604
    Abstract: A microscope system (100) includes a microscope (10) and an observation unit (20) provided separately from the microscope. The microscope includes a microscope objective lens (3), an image pickup element (31) disposed at a position at which an image is formed through the microscope objective lens, and a first control apparatus (32) connected with the image pickup element. The observation unit includes a second control apparatus (21), a display device (22, 22a, 22b) connected with the second control apparatus, and a magnifier optical system (25a, 25b) arranged at a predetermined distance from the display device. The microscope system further includes a communication apparatus (21) for communication between the first control apparatus and the second control apparatus so that an image picked up by the image pickup apparatus is displayed on the display device.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: June 6, 2017
    Assignee: OLYMPUS CORPORATION
    Inventors: Kazuo Kajitani, Hisashi Goto, Yoshimasa Suzuki
  • Patent number: 9389401
    Abstract: Provided are a variable power optical system in which the value of the entire length with respect to the image height is reduced and the aberration is well corrected, and an image pickup device comprising the same. Specifically provided is a variable power optical system comprising, in order from the object side, at least a first lens group having negative refractive power, a variable power group having positive refractive power, and a final lens group having positive refractive power, wherein the variable power group is provided with, in order from the object side, a first lens element having positive refractive power, a second lens element, and a third lens element, the second lens element has a convex shape on the object side, and the final lens group comprises a positive lens, the variable power optical system satisfying the following conditional expression: 10?VdLg?45 ?1.0<(R2a?R2b)/(R2a+R2b)<1.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: July 12, 2016
    Assignee: OLYMPUS CORPORATION
    Inventors: Keigo Matsuo, Takayuki Mimura, Kanato Adachi, Hisashi Goto
  • Patent number: 9244265
    Abstract: The invention provides a viewing optical system positioned between a viewing plane as a virtual plane and an eye point. The viewing optical system comprises, in order from the viewing plane side, a first lens and a filter.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: January 26, 2016
    Assignee: OLYMPUS CORPORATION
    Inventors: Ayako Asakura, Hisashi Goto
  • Patent number: 9170413
    Abstract: A microscope objective lens has an aspheric-surface lens, and a first lens nearest to an object side is a negative lens. It is desirable that at least any one surface of the first lens nearest to the object side is an aspheric surface. Moreover, it is desirable that the microscope objective lens satisfies the following conditional expression (1) ?20<f1/f<?0.1??(1) where, f1 denotes a focal length of the first lens nearest to the object side, and f denotes a focal length of the overall microscope objective lens system.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: October 27, 2015
    Assignee: OLYMPUS CORPORATION
    Inventors: Yoshimasa Suzuki, Kazuo Kajitani, Hisashi Goto, Hisashi Ode
  • Patent number: 9106899
    Abstract: An apparatus has a synchronizing signal generator to which a trigger signal is input and that outputs a first synchronizing signal and a second synchronizing signal based on the trigger signal, an image pickup unit that has an image pickup surface, performs a first image picking-up based on the first synchronizing signal, and performs a second image picking-up based on the second synchronizing signal, and an image pickup element tilting unit that changes the angle of the image pickup surface relative to the optical axis during a period after the first image picking-up and before the second image picking-up.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: August 11, 2015
    Assignee: OLYMPUS CORPORATION
    Inventors: Kazuaki Murayama, Hisashi Goto, Kengo Enomoto, Kazuya Yamanaka
  • Publication number: 20150085374
    Abstract: Provided are a variable power optical system in which the value of the entire length with respect to the image height is reduced and the aberration is well corrected, and an image pickup device comprising the same. Specifically provided is a variable power optical system comprising, in order from the object side, at least a first lens group having negative refractive power, a variable power group having positive refractive power, and a final lens group having positive refractive power, wherein the variable power group is provided with, in order from the object side, a first lens element having positive refractive power, a second lens element, and a third lens element, the second lens element has a convex shape on the object side, and the final lens group comprises a positive lens, the variable power optical system satisfying the following conditional expression: 10?VdLg?45 ?1.0<(R2a?R2b)/(R2a+R2b)<1.
    Type: Application
    Filed: November 17, 2014
    Publication date: March 26, 2015
    Applicant: OLYMPUS CORPORATION
    Inventors: Keigo MATSUO, Takayuki MIMURA, Kanato ADACHI, Hisashi GOTO
  • Publication number: 20150070484
    Abstract: A microscope system (100) includes a microscope (10) and an observation unit (20) provided separately from the microscope. The microscope includes a microscope objective lens (3), an image pickup element (31) disposed at a position at which an image is formed through the microscope objective lens, and a first control apparatus (32) connected with the image pickup element. The observation unit includes a second control apparatus (21), a display device (22, 22a, 22b) connected with the second control apparatus, and a magnifier optical system (25a, 25b) arranged at a predetermined distance from the display device. The microscope system further includes a communication apparatus (21) for communication between the first control apparatus and the second control apparatus so that an image picked up by the image pickup apparatus is displayed on the display device.
    Type: Application
    Filed: November 14, 2014
    Publication date: March 12, 2015
    Inventors: Kazuo Kajitani, Hisashi Goto, Yoshimasa Suzuki