Patents by Inventor Jun Yokoyama

Jun Yokoyama 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: 20250035508
    Abstract: At least three light fluxes of the test pattern projected from optical module 1 are acquired by wavefront sensor 9, the parallelism of the respective light fluxes is calculated, and the orientation of display panel 5 of the optical module is adjusted so that the parallelism of each light flux coincides.
    Type: Application
    Filed: October 16, 2024
    Publication date: January 30, 2025
    Inventors: JUN YOKOYAMA, TATSUYA YONEMURA, TAKASHI URASHIMA, YOHEI TAKECHI, HIDEYUKI TACHIKA
  • Publication number: 20240416453
    Abstract: A laser processing apparatus sets a processing section passing through a target position on a processing surface, sets a measurement section centered on the target position in the processing section, sets a plurality of data acquisition positions that are trajectories perpendicular to a processing direction in the measurement section. The laser processing apparatus acquires pieces of measurement data indicating shapes of keyholes at the respective data acquisition positions during processing of the processing section, and projects the pieces of measurement data in the processing direction to be superimposed on each other to create projection data. The laser processing apparatus obtains the second instruction value in a direction perpendicular to the processing direction at the target position on the basis of the projection data. Therefore, it is possible to provide a laser processing apparatus and a laser processing method capable of accurately measuring a depth of a keyhole.
    Type: Application
    Filed: August 30, 2024
    Publication date: December 19, 2024
    Inventors: Jun YOKOYAMA, Yohei TAKECHI
  • Publication number: 20240227072
    Abstract: Laser processing apparatus includes movable mirror for changing paths of laser light for processing and measurement light, and stage for changing an incident angle of measuring light. Furthermore, laser processing apparatus includes lens for condensing laser light for processing and measurement light on processing point, controller for controlling laser oscillator, movable mirror, and stage based on corrected data for processing, and measurement processor for measuring a depth of keyhole generated at processing point. The corrected data for processing is data corrected so as to a deviation of an arrival position of at least one of laser light for processing and measurement light caused by chromatic aberration of lens on the surface of workpiece. With this configuration, an accurate depth of keyhole can be measured.
    Type: Application
    Filed: March 20, 2024
    Publication date: July 11, 2024
    Inventors: Yohei TAKECHI, Jun YOKOYAMA
  • Publication number: 20240227074
    Abstract: A laser processing apparatus sets a processing section passing through a target position on a processing surface, sets a measurement section centered on the target position in the processing section, sets a plurality of data acquisition positions that are trajectories perpendicular to a processing direction in the measurement section. The laser processing apparatus acquires pieces of measurement data indicating shapes of keyholes at the respective data acquisition positions during processing of the processing section, and projects the pieces of measurement data in the processing direction to be superimposed on each other to create projection data. The laser processing apparatus obtains the second instruction value in a direction perpendicular to the processing direction at the target position on the basis of the projection data. Therefore, it is possible to provide a laser processing apparatus and a laser processing method capable of accurately measuring a depth of a keyhole.
    Type: Application
    Filed: March 25, 2024
    Publication date: July 11, 2024
    Inventors: Jun YOKOYAMA, Yohei TAKECHI
  • Patent number: 11975403
    Abstract: Laser processing apparatus includes movable mirror for changing paths of laser light for processing and measurement light, and stage for changing an incident angle of measuring light. Furthermore, laser processing apparatus includes lens for condensing laser light for processing and measurement light on processing point, controller for controlling laser oscillator, movable mirror, and stage based on corrected data for processing, and measurement processor for measuring a depth of keyhole generated at processing point. The corrected data for processing is data corrected so as to a deviation of an arrival position of at least one of laser light for processing and measurement light caused by chromatic aberration of lens on the surface of workpiece. With this configuration, an accurate depth of keyhole can be measured.
    Type: Grant
    Filed: August 17, 2020
    Date of Patent: May 7, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yohei Takechi, Jun Yokoyama
  • Patent number: 11969823
    Abstract: A laser processing apparatus sets a processing section passing through a target position on a processing surface, sets a measurement section centered on the target position in the processing section, sets a plurality of data acquisition positions that are trajectories perpendicular to a processing direction in the measurement section. The laser processing apparatus acquires pieces of measurement data indicating shapes of keyholes at the respective data acquisition positions during processing of the processing section, and projects the pieces of measurement data in the processing direction to be superimposed on each other to create projection data. The laser processing apparatus obtains the second instruction value in a direction perpendicular to the processing direction at the target position on the basis of the projection data. Therefore, it is possible to provide a laser processing apparatus and a laser processing method capable of accurately measuring a depth of a keyhole.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: April 30, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Jun Yokoyama, Yohei Takechi
  • Patent number: 11967713
    Abstract: The present invention relates to a positive electrode active material for non-aqueous electrolyte secondary battery, including lithium-nickel composite oxide particles having a layer structure of hexagonal system; and a lithium tungstate coating film disposed on a surface of secondary particles of the lithium-nickel composite oxide particles, wherein the positive electrode active material for non-aqueous electrolyte secondary battery includes, as metallic elements, lithium (Li), nickel (Ni), cobalt (Co), element M (M) which is at least one element selected from Mn, V, Mg, Mo, Nb, Ti, Ca, Cr, Zr, Ta, and Al, and tungsten (W), wherein a ratio of amount of substance in the metallic elements contained is Li:Ni:Co:M:W=a:1-x-y:x:y:z, wherein 0.97?a?1.25, 0?x?0.35, 0?y?0.35, and 0.005?z?0.030.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: April 23, 2024
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Yuki Koshika, Haruki Kaneda, Jun Yokoyama
  • Patent number: 11811052
    Abstract: The present invention provides a positive electrode active material for a non-aqueous electrolyte secondary battery including a lithium metal composite oxide powder represented by a general formula: LizNi1?x?yCoxMyO2+?, wherein 0<x?0.35, 0?y?0.35, 0.95?z?1.30, ?0.15???0.15, and M is at least one element selected from Mn, V, Mg, Mo, Nb, Ti and Al; and a coating layer placed on particle surfaces of the lithium metal composite oxide powder; wherein the coating layer is a mixed-phase of a crystalline phase and an amorphous phase.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: November 7, 2023
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Jiro Okada, Tetsufumi Komukai, Jun Yokoyama, Takahiro Ogawa, Tomoko Nakayama
  • Patent number: 11777090
    Abstract: Provided is a positive electrode active material for a nonaqueous electrolyte secondary battery including a LiNi composite oxide having low internal resistance and excellent thermal stability. The positive electrode active material is obtained by performing a water washing process using a water spray on a LiNi composite oxide powder obtained by a firing step until the filtrate has an electric conductivity of 30 to 60 mS/cm, and then dried, where the LiNi composite oxide is represented by the composition formula (1): LibNi1-aM1aO2, where M1 represents at least one kind of element selected from transition metal elements other than Ni, group 2 elements, and group 13 elements, and 0.01?a?0.5, and 0.85?b?1.05.
    Type: Grant
    Filed: July 14, 2022
    Date of Patent: October 3, 2023
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Tomoko Nakayama, Jun Yokoyama, Tetsufumi Komukai
  • Patent number: 11648629
    Abstract: A laser processing apparatus is used which includes: a laser oscillator that oscillates a processing laser beam at a processing point to be processed on a surface of a workpiece; an optical interferometer that emits a measurement beam to the processing point and generates an optical interference intensity signal based on interference generated due to an optical path difference between the measurement beam reflected at the processing point and a reference beam; a first mirror that changes traveling directions of the processing laser beam and the measurement beam; a second mirror that changes an incident angle of the measurement beam onto the first mirror; a lens that focuses the processing laser beam and the measurement beam on the processing point; a memory that stores corrected processing data; a control unit that controls the laser oscillator, the first mirror, and the second mirror based on the corrected processing data; and a measurement processing unit that derives a depth of a keyhole generated at the p
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: May 16, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yohei Takechi, Jun Yokoyama, Takashi Urashima
  • Patent number: 11648624
    Abstract: A laser processing apparatus emits processing light, measurement light, processing guide light, and measurement guide light with which a surface of a workpiece is irradiated. Respective wavelengths of the processing guide light and the measurement guide light are set to wavelengths at which a deviation amount between an irradiation position of the processing guide light and an irradiation position of the measurement guide light due to a chromatic aberration of magnification of a lens, and a deviation amount between an irradiation position of the processing light and an irradiation position of the measurement light due to the chromatic aberration of magnification of the lens are equal to each other. Therefore, positioning of spot positions of a plurality of laser lights having different output differences can be realized with high accuracy and high speed.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: May 16, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Jun Yokoyama, Yohei Takechi
  • Patent number: 11637283
    Abstract: Provided is a positive electrode active material for non-aqueous electrolyte secondary batteries for making high capacity and high output compatible, non-aqueous electrolyte secondary batteries, to which the positive electrode active material is adopted, and a production method for a positive electrode active material in which the positive electrode active material can be easily produced even on an industrial scale. A positive electrode active material for non-aqueous electrolyte secondary batteries, comprising: primary particles of a lithium nickel composite oxide represented by at least General Formula: LizNi1-x-yCoxMyO2 (0.95?z?1.03, 0<x?0.20, 0<y?0.10, x+y?0.20, and M is at least one type of element selected from Mg, Al, Ca, Ti, V, Cr, Mn, Nb, Zr, and Mo); and secondary particles configured by aggregating the primary particles, wherein an LiAl compound is provided on surfaces of the primary particles.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: April 25, 2023
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Jun Yokoyama, Kazuomi Ryoshi
  • Patent number: 11637284
    Abstract: Provided is a positive electrode active material for non-aqueous electrolyte secondary batteries for making high capacity and high output compatible, non-aqueous electrolyte secondary batteries, having the positive electrode active material adopted thereto, and a production method for a positive electrode active material in which the positive electrode active material can be easily produced in an industrial scale. A positive electrode active material for non-aqueous electrolyte secondary batteries, contains: primary particles of a lithium nickel composite oxide represented by at least General Formula: LizNi1-x-yCoxMyO2 (0.95?z?1.03, 0<x?0.20, 0<y?0.10, x+y?0.20, and M is at least one type of element selected from Mg, Al, Ca, Ti, V, Cr, Mn, Nb, Zr, and Mo); and secondary particles configured by flocculating the primary particles, wherein an LiAl compound and an LiW compound are provided on surfaces of the primary particles.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: April 25, 2023
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Jun Yokoyama, Kazuomi Ryoshi
  • Publication number: 20220352515
    Abstract: Provided is a positive electrode active material for a nonaqueous electrolyte secondary battery including a LiNi composite oxide having low internal resistance and excellent thermal stability. The positive electrode active material is obtained by performing a water washing process using a water spray on a LiNi composite oxide powder obtained by a firing step until the filtrate has an electric conductivity of 30 to 60 mS/cm, and then dried, where the LiNi composite oxide is represented by the composition formula (1): LibNi1-aM1aO2, where M1 represents at least one kind of element selected from transition metal elements other than Ni, group 2 elements, and group 13 elements, and 0.01?a?0.5, and 0.85?b?1.05.
    Type: Application
    Filed: July 14, 2022
    Publication date: November 3, 2022
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Tomoko Nakayama, Jun Yokoyama, Tetsufumi Komukai
  • Patent number: 11424448
    Abstract: Provided is a positive electrode active material for a nonaqueous electrolyte secondary battery including a LiNi composite oxide having low internal resistance and excellent thermal stability. The positive electrode active material is obtained by performing a water washing process using a water spray on a LiNi composite oxide powder obtained by a firing step until the filtrate has an electric conductivity of 30 to 60 mS/cm, and then dried, where the LiNi composite oxide is represented by the composition formula (1): LibNi1?aM1aO2, where M1 represents at least one kind of element selected from transition metal elements other than Ni, group 2 elements, and group 13 elements, and 0.01?a?0.5, and 0.85?b?1.05.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: August 23, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Tomoko Nakayama, Jun Yokoyama, Tetsufumi Komukai
  • Patent number: 11408722
    Abstract: OCT measuring device in the present exemplary embodiment includes: wavelength sweep light source that emits light of which a wavelength is swept; optical interferometer that divides the light into measurement light and reference light, emits measurement light toward measurement surface of measuring target object, and generates an optical interference intensity signal indicating an intensity of interference between measurement light reflected from measurement surface and reference light; electro-optic element which is a phase modulator arranged in a light path of optical interferometer; measurement processor which is a signal generator that derives a position of measurement surface and generates a phase amount indicator signal that indicates a phase amount of phase modulator based on the optical interference intensity signal; and electro-optic element controller which is a phase amount controller that controls the phase amount given to the light that is transmitted through phase modulator.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: August 9, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yohei Takechi, Jun Yokoyama
  • Patent number: 11396061
    Abstract: A laser welding apparatus includes: a laser oscillator configured to emit a laser beam toward a welding portion of a welded material; an optical interferometer configured to generate an interference signal that indicates an intensity of an interference beam of a measurement beam reflected by the welding portion and a reference beam; and a derivation unit configured to generate, based on the interference signal, two-dimensional tomographic image data indicating a correlation among a distance in a proceeding direction of welding of the welding portion, a depth of the welding, and an intensity of the interference signal, to extract specified depth tomographic image data within a specified range from the two-dimensional tomographic image data, and to derive a depth for each distance based on the intensity of the interference signal in the specified depth tomographic image data.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: July 26, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Jun Yokoyama, Takashi Urashima, Daichi Higashi
  • Patent number: 11362890
    Abstract: A system management device includes a storage part for storing at least one of a device configuration of a device and a network configuration of a network to which the device belongs. The device includes a control part configured to, from among devices belonging to a system, determine the device for executing a process on a basis of at least one of the device configuration and the network configuration.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: June 14, 2022
    Assignee: NEC CORPORATION
    Inventor: Jun Yokoyama
  • Publication number: 20220055147
    Abstract: A laser processing apparatus includes a laser oscillator that oscillates processing laser light to be incident on a processing point on a processing surface of a workpiece, a coupling mirror that deflects or transmits the processing laser light and measurement light to be incident on the processing point toward the processing point, a measurement light deflection unit that changes an incident angle of the measurement light on the coupling mirror, a lens that concentrates the processing laser light and the measurement light on the processing point, a controller that controls the laser oscillator and the measurement light deflection unit, a measurement processor that measures a depth of a keyhole generated at the processing point by the processing laser light by using an optical interference signal based on an interference generated by an optical path difference between the measurement light reflected at the processing point and reference light, and a beam position measurement unit that measures positions of th
    Type: Application
    Filed: July 19, 2021
    Publication date: February 24, 2022
    Inventors: JUN YOKOYAMA, TAKASHI URASHIMA, YOHEI TAKECHI
  • Publication number: 20210381818
    Abstract: OCT measuring device in the present exemplary embodiment includes: wavelength sweep light source that emits light of which a wavelength is swept; optical interferometer that divides the light into measurement light and reference light, emits measurement light toward measurement surface of measuring target object, and generates an optical interference intensity signal indicating an intensity of interference between measurement light reflected from measurement surface and reference light; electro-optic element which is a phase modulator arranged in a light path of optical interferometer; measurement processor which is a signal generator that derives a position of measurement surface and generates a phase amount indicator signal that indicates a phase amount of phase modulator based on the optical interference intensity signal; and electro-optic element controller which is a phase amount controller that controls the phase amount given to the light that is transmitted through phase modulator.
    Type: Application
    Filed: April 27, 2021
    Publication date: December 9, 2021
    Inventors: YOHEI TAKECHI, JUN YOKOYAMA