Patents by Inventor Takashi Kurita

Takashi Kurita 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: 20230226639
    Abstract: A processed product manufacturing method includes preparing a workpiece containing metal and forming a plurality of first regions and a second region along a surface of the workpiece by the irradiation of a laser beam. The first regions are applied with a tensile residual stress. In the second region applied with a compressive residual stress, a plurality of irradiation points separated from each other in the surface of the workpiece are irradiated with the laser beam. The first regions are formed to be separated from each other and each of the first regions is surrounded by the second region when viewed from a direction orthogonal to the surface.
    Type: Application
    Filed: June 4, 2021
    Publication date: July 20, 2023
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Takashi KURITA, Takeshi WATARI, Yuki KABEYA, Ryo YOSHIMURA
  • Publication number: 20230185238
    Abstract: A laser processing apparatus includes a spatial light modulator for inputting laser light output from a laser light source and outputting laser light after phase modulation by a hologram, and a control unit for presenting, on the spatial light modulator, the hologram for focusing the laser light after the phase modulation output from the spatial light modulator on a plurality of irradiation points in a processing object by a focusing optical system. The control unit sets at least one of a shape and a size of a processing region defined by the irradiation points in a first plane intersecting an optical axis of the laser light and a processing region defined by the irradiation points in a second plane intersecting the optical axis and separated from the first plane in a direction of the optical axis to be different from each other.
    Type: Application
    Filed: February 17, 2021
    Publication date: June 15, 2023
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Takashi KURITA, Yuu TAKIGUCHI
  • Patent number: 11673172
    Abstract: Provided is a method that, when pulp fibers are recovered from used absorbent articles that have been put into collection bags, makes it possible to safely and sanitarily crush the used absorbent articles while suppressing costs. A method for recovering pulp fibers from used absorbent articles, the method comprising: a crushing step (S12) in which collection bags (A) in which used absorbent articles have been sealed are put into a container (65), the collection bags in the container are transferred to a crushing device (12) that communicates with the container, and, bag by bag, the crushing device crushes the used absorbent articles in the collections bags in a deactivating aqueous solution; and a separation step (S13) in which the pulp fibers, a highly water-absorbent polymer, and the deactivating aqueous solution are separated from the crushed product and deactivating aqueous solution obtained in the crushing step.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: June 13, 2023
    Assignee: UNICHARM CORPORATION
    Inventors: Takayoshi Konishi, Toshio Hiraoka, Takashi Kato, Noritomo Kurita
  • Publication number: 20230143460
    Abstract: A laser processing apparatus includes a spatial light modulator for inputting laser light output from a laser light source and outputting laser light after phase modulation by a hologram, and a control unit for presenting, on the spatial light modulator, the hologram for focusing the laser light after the phase modulation output from the spatial light modulator on a plurality of irradiation points in a processing object by a focusing optical system. The control unit controls light intensities of at least two irradiation points included in the plurality of irradiation points independently of each other.
    Type: Application
    Filed: February 17, 2021
    Publication date: May 11, 2023
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Takashi KURITA, Yuu TAKIGUCHI
  • Publication number: 20230120938
    Abstract: A vehicle mounting structure for an electric unit 1 includes a side member 10, a suspension member 5 including a high rigidity portion 5a and a low rigidity portion 5b in a vehicle front-rear direction, and an electric unit 1 in which an inverter 2 and a motor 3 are integrated. The side member 10 includes a curved portion 10c having an upwardly convex curved shape. The curved portion 10c is disposed at a position overlapping with the inverter 2 in the vehicle front-rear direction. The electric unit 1 is fixed to the low rigidity portion 5b.
    Type: Application
    Filed: March 4, 2020
    Publication date: April 20, 2023
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Daisuke ASAKURA, Takashi KURITA
  • Publication number: 20230075209
    Abstract: A laser processing apparatus includes a semiconductor laser element, a waveform output unit for outputting input waveform data, a driver circuit for supplying a drive current having a time waveform according to the input waveform data to the semiconductor laser element, and a processing optical system for irradiating a processing object with laser light. The semiconductor laser element outputs the laser light in which two or more light pulse groups each including one or a plurality of light pulses are provided with a time interval therebetween. Time waveforms of at least two light pulse are different from each other. The time waveform includes at least one of a time waveform of each of the one or plurality of light pulses, a time width of each of the one or plurality of light pulses, and a time interval of the plurality of light pulses.
    Type: Application
    Filed: February 10, 2021
    Publication date: March 9, 2023
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Takashi KURITA, Kazuki KAWAI
  • Publication number: 20230049067
    Abstract: A hybrid system for a vehicle includes a drive unit provided with a motor for driving wheels and a power generation unit provided with an engine and a generator driven by the engine. The power generation unit is provided so as to be adjacent to the drive unit in a separated state. One of the drive unit and the power generation unit is mounted on a vehicle body via a first mount member at a lower portion of the one unit. The other one of the drive unit and the power generation unit is mounted on the vehicle body via a second mount member at an upper portion of the other one unit.
    Type: Application
    Filed: February 4, 2020
    Publication date: February 16, 2023
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Takashi KURITA, Daisuke ASAKURA, Ryo WATANABE
  • Patent number: 11504803
    Abstract: A laser processing apparatus includes a light source which outputs a laser light, and a waveform control unit which controls a pulse waveform of the laser light irradiating the workpiece, in which the pulse waveform of the laser light controlled by the waveform control unit includes a main pulse and a foot pulse temporally preceding the main pulse, and a peak intensity of the foot pulse is smaller than a peak intensity of the main pulse, and a peak position of the main pulse is positioned in a retention time period of plasma generated due to an incidence of the foot pulse on the workpiece.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: November 22, 2022
    Assignee: HAMAMATSU PHOTONICS K.K
    Inventors: Yoshio Mizuta, Takashi Kurita, Takeshi Watari, Yuki Kabeya, Norio Kurita, Toshiyuki Kawashima
  • Patent number: 11424591
    Abstract: A laser device is a laser device that includes an output unit that outputs seed light to a light amplifying unit. The output unit has a light source unit that outputs, as the seed light, rays of light with a plurality of wavelengths lying within a gain range of the light amplifying unit, and a seed light control unit that controls an intensity-time waveform of the seed light output from the light source unit.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: August 23, 2022
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Takashi Kurita, Yoshinori Kato, Toshiyuki Kawashima
  • Publication number: 20220263292
    Abstract: A laser apparatus includes a light source unit and a light combining unit. The light source unit outputs first laser light and second laser light having a wavelength different from that of the first laser light to different optical paths. The light combining unit is optically coupled to the light source unit, and combines the first laser light and the second laser light to generate a burst pulse with a frequency according to a difference between the wavelength of the first laser light and the wavelength of the second laser light. In the light source unit, the wavelengths of the first laser light and the second laser light are set in advance or settable such that the frequency of the burst pulse is 1 GHz or more.
    Type: Application
    Filed: June 25, 2020
    Publication date: August 18, 2022
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Takashi KURITA, Yoshinori KATO, Toshiyuki KAWASHIMA
  • Publication number: 20210273407
    Abstract: A laser apparatus includes a semiconductor laser element, a waveform calculation unit for calculating input waveform data, a driver circuit for supplying a drive current having a temporal waveform according to the input waveform data to the semiconductor laser element, an optical amplifier for amplifying laser light output from the semiconductor laser element, and a light waveform detection unit for detecting a waveform of laser light after the amplification output from the optical amplifier. The waveform calculation unit compares the waveform of the laser light after the amplification detected by the light waveform detection unit with a target waveform, adjusts a temporal waveform of the input waveform data, and brings the waveform of the laser light after the amplification close to the target waveform.
    Type: Application
    Filed: July 2, 2019
    Publication date: September 2, 2021
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Takashi KURITA, Yoshinori KATO, Toshiyuki KAWASHIMA
  • Publication number: 20200106237
    Abstract: A laser device is a laser device that includes an output unit that outputs seed light to a light amplifying unit. The output unit has a light source unit that outputs, as the seed light, rays of light with a plurality of wavelengths lying within a gain range of the light amplifying unit, and a seed light control unit that controls an intensity-time waveform of the seed light output from the light source unit.
    Type: Application
    Filed: November 21, 2017
    Publication date: April 2, 2020
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Takashi KURITA, Yoshinori KATO, Toshiyuki KAWASHIMA
  • Patent number: 10374377
    Abstract: A plate-like laser medium has a through-hole for providing a flow of a cooling medium. The laser medium unit includes the plurality of laser media. A laser beam amplification device includes a laser medium unit 10, an excitation light source 21 that causes excitation light to enter the laser medium unit 10, a through-hole 16a of a window member as a unit for supplying the cooling medium in a through-hole 14a of the laser medium 14, and a cooling medium flow path F1 arranged around the laser medium unit 10.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: August 6, 2019
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Takashi Sekine, Yoshinori Kato, Yoshinori Tamaoki, Takashi Kurita, Toshiyuki Kawashima, Takaaki Morita
  • Publication number: 20190232423
    Abstract: A laser processing apparatus includes a light source which outputs a laser light, and a waveform control unit which controls a pulse waveform of the laser light irradiating the workpiece, in which the pulse waveform of the laser light controlled by the waveform control unit includes a main pulse and a foot pulse temporally preceding the main pulse, and a peak intensity of the foot pulse is smaller than a peak intensity of the main pulse, and a peak position of the main pulse is positioned in a retention time period of plasma generated due to an incidence of the foot pulse on the workpiece.
    Type: Application
    Filed: January 24, 2019
    Publication date: August 1, 2019
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Yoshio MIZUTA, Takashi KURITA, Takeshi WATARI, Yuki KABEYA, Norio KURITA, Toshiyuki KAWASHIMA
  • Patent number: 10132368
    Abstract: A roller type one-way clutch includes an outer race in which at least one pocket having a cam surface on an inner periphery thereof is formed, an inner race which is spaced away from the outer race on an inside diameter side in a radial direction and which is relatively rotatably disposed concentrically with respect to the outer race, a roller which is disposed in the pocket and which engages with the cam surface to transmit a torque between the outer race and the inner race, a spring which is disposed between the outer race and the roller in the pocket and which urges the roller in a direction in which the roller engages with the cam surface, and a side plate secured to be in contact with one end surface in an axial direction of the outer race. The side plate has a non-circular shape, the one end surface in the axial direction is annular, and at least a portion of the one end surface in the axial direction of the outer race is exposed in a state in which the side plate is secured.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: November 20, 2018
    Assignee: NSK-WARNER K.K.
    Inventors: Takashi Kurita, Tetsuya Wakamori, Ritsuo Toya
  • Publication number: 20180278007
    Abstract: A plate-like laser medium has a through-hole for providing a flow of a cooling medium. The laser medium unit includes the plurality of laser media. A laser beam amplification device includes a laser medium unit 10, an excitation light source 21 that causes excitation light to enter the laser medium unit 10, a through-hole 16a of a window member as a unit for supplying the cooling medium in a through-hole 14a of the laser medium 14, and a cooling medium flow path F1 arranged around the laser medium unit 10.
    Type: Application
    Filed: January 13, 2016
    Publication date: September 27, 2018
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Takashi SEKINE, Yoshinori KATO, Yoshinori TAMAOKI, Takashi KURITA, Toshiyuki KAWASHIMA, Takaaki MORITA
  • Patent number: 10063026
    Abstract: A laser medium unit 10 in a laser beam amplification device includes a plurality of laser media 14. A cooling medium flow path F1 is provided around the laser medium unit 10 to cool the laser medium unit 10 from outside. A sealed space between the laser media 14 is filled with gas or liquid, and a laser beam for passing through the sealed space is not interfered by a cooling medium flowing outside. Therefore, a fluctuation of an amplified laser beam is prevented, and a quality such as stability and focusing characteristics of the laser beam is improved.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: August 28, 2018
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Takashi Sekine, Yoshinori Kato, Yoshinori Tamaoki, Takashi Kurita, Toshiyuki Kawashima, Takaaki Morita
  • Publication number: 20180006423
    Abstract: A laser medium unit 10 in a laser beam amplification device includes a plurality of laser media 14. A cooling medium flow path F1 is provided around the laser medium unit 10 to cool the laser medium unit 10 from outside. A sealed space between the laser media 14 is filled with gas or liquid, and a laser beam for passing through the sealed space is not interfered by a cooling medium flowing outside. Therefore, a fluctuation of an amplified laser beam is prevented, and a quality such as stability and focusing characteristics of the laser beam is improved.
    Type: Application
    Filed: January 13, 2016
    Publication date: January 4, 2018
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Takashi SEKINE, Yoshinori KATO, Yoshinori TAMAOKI, Takashi KURITA, Toshiyuki KAWASHIMA, Takaaki MORITA
  • Publication number: 20170341990
    Abstract: A problem to be solved is to provide a method for processing zirconia without producing a monoclinic crystal. The solution is a method for processing zirconia, including the step of irradiating the zirconia with a laser with a pulse duration of 10?12 seconds to 10?15 seconds at an intensity of 1013 to 1015 W/cm2.
    Type: Application
    Filed: August 10, 2015
    Publication date: November 30, 2017
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Osamu KOMEDA, Takuya KONDO, Toshiyuki KAWASHIMA, Hirofumi KAN, Nakahiro SATOH, Takashi SEKINE, Takashi KURITA, Atsushi SUNAHARA, Tomoyoshi MOTOHIRO, Tatsumi HIOKI, Hirozumi AZUMA, Shigeki OHSHIMA, Tsutomu KAJINO, Yoneyoshi KITAGAWA, Yoshitaka MORI, Katsuhiro ISHII, Ryohei HANAYAMA, Yasuhiko NISHIMURA, Eisuke MIURA
  • Patent number: 9805829
    Abstract: A target shell monitoring device 4 that monitors an attitude and a position of the target shell Tg1, a compression laser output device 5a that irradiates the target shell Tg1 with a compression laser light LS1, and a heating laser output device 6 that irradiates the target shell Tg1 with a heating laser light LS3 following the compression laser light LS1 are provided. The target shell Tg1 has a hollow spherical shell shape, includes an approximately spherical space Sp on an inner side thereof, includes at least one through hole H1 connecting an outer side thereof and the space Sp, and includes, on an outer surface Sf1 thereof, irradiation areas Ar1 and Ar2 to be irradiated with compression laser lights.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: October 31, 2017
    Assignees: HAMAMATSU PHOTONICS K.K., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takashi Sekine, Takashi Kurita, Toshiyuki Kawashima, Nakahiro Satoh, Hirofumi Kan, Yoneyoshi Kitagawa, Yoshitaka Mori, Katsuhiro Ishii, Kazuhisa Fujita, Ryohei Hanayama, Shinichiro Okihara, Atsushi Sunahara, Osamu Komeda, Naoki Nakamura, Yasuhiko Nishimura, Hirozumi Azuma