Patents by Inventor Koichi Sakata

Koichi Sakata 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: 20210297018
    Abstract: Provided is an encoder, which is provided in a driving apparatus comprising a motor section configured to drive a first displacement section, which is connected to a fixed section via an elastic body, and a transmission section configured to convert a displacement of the first displacement section and transmit the displacement to the second displacement section, comprising: a first detector configured to detect first displacement information of the first displacement section; a second detector configured to detect second displacement information of the second displacement section; a third detector configured to detect third displacement information of the motor section relative to the fixed section; and a computing section configured to obtain information related to a driving amount of the motor section using the first displacement information and the second displacement information, and obtain information of a load on the motor section using the third displacement information.
    Type: Application
    Filed: March 24, 2021
    Publication date: September 23, 2021
    Applicant: NIKON CORPORATION
    Inventors: Kenji OMATA, Koichi SAKATA
  • Publication number: 20210268612
    Abstract: A repair welding method according to at least one embodiment is for a member in which a first end and a second end of a parent material are connected by welding and includes: a step of removing a portion including at least a part of a first heat-affected zone of an existing welded portion of the member; and a step of performing repair welding after removing the portion. In a cross-section including the parent material and the existing welded portion, all intersection portions between the first heat-affected zone of the existing welded portion and a second heat-affected zone due to the repair welding have an intersection angle between the first heat-affected zone and the second heat-affected zone of 70° to 110°.
    Type: Application
    Filed: July 19, 2019
    Publication date: September 2, 2021
    Applicant: MITSUBISHI POWER, LTD.
    Inventors: Masaki Honda, Toshiaki Nishio, Nobuyoshi Komai, Takumi Tokiyoshi, Masaaki Fujita, Kimihiko Tominaga, Hiroyuki Ohyama, Fumitoshi Sakata, Koichi Teshima, Eiji Murakami, Akinori Yamaguchi, Fumio Nishi
  • Patent number: 11069700
    Abstract: A semiconductor storage device includes a first stacked body, a second stacked body, a first division film, a second division film, and a plurality of discrete films. The a first stacked body includes first electrode layers stacked in a first direction. The second stacked body, above the first stacked body, includes second electrode layers stacked in the first direction. The second semiconductor layer is electrically connected to the first semiconductor layer. The first division film, extending in the first direction through the first stacked body, divides the first stacked body in a second direction crossing the first direction. The second division film, extending in the first direction through the second stacked body, divides the second stacked body in the second direction. The discrete films, extending in the first direction through the second stacked body, are disposed above the first division film.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: July 20, 2021
    Assignee: TOSHIBA MEMORY CORPORATION
    Inventors: Koichi Sakata, Kazutaka Suzuki, Hiroaki Ashidate, Katsuhiro Sato, Satoshi Nakaoka
  • Publication number: 20210053443
    Abstract: A power controller for an electric vehicle may include: an input terminal connected to a DC power source; a first inverter connected to the input terminal and configured to convert power of the DC power source to driving power for a first electric motor for propulsion; a second inverter connected to the input terminal and configured to convert the power of the DC power source to driving power for a second electric motor; and a switch configured to electrically disconnect the second inverter from the first inverter and the input terminal.
    Type: Application
    Filed: July 20, 2020
    Publication date: February 25, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masayuki SUGITA, Koichi SAKATA, Masatoshi SHINOHARA
  • Publication number: 20200295027
    Abstract: A semiconductor storage device includes a first stacked body, a second stacked body, a first division film, a second division film, and a plurality of discrete films. The a first stacked body includes first electrode layers stacked in a first direction. The second stacked body, above the first stacked body, includes second electrode layers stacked in the first direction. The second semiconductor layer is electrically connected to the first semiconductor layer. The first division film, extending in the first direction through the first stacked body, divides the first stacked body in a second direction crossing the first direction. The second division film, extending in the first direction through the second stacked body, divides the second stacked body in the second direction. The discrete films, extending in the first direction through the second stacked body, are disposed above the first division film.
    Type: Application
    Filed: August 29, 2019
    Publication date: September 17, 2020
    Applicant: TOSHIBA MEMORY CORPORATION
    Inventors: Koichi SAKATA, Kazutaka SUZUKI, Hiroaki ASHIDATE, Katsuhiro SATO, Satoshi NAKAOKA
  • Publication number: 20200286990
    Abstract: A semiconductor device including a first chip and a second chip. The first chip includes: a first substrate; a first transistor that is provided on the first substrate; and a first pad that is provided above the first transistor and that is electrically connected to the first transistor. The second chip includes: a second pad that is provided on the first pad; a second substrate that is provided above the second pad and that includes a first diffusion layer and a second diffusion layer, at least one of the first diffusion layer and the second diffusion layer being electrically connected to the second pad; and an isolation insulating film or an isolation trench that extends at least from an upper surface of the second substrate to a lower surface of the second substrate within the second substrate and that isolates the first diffusion layer from the second diffusion layer.
    Type: Application
    Filed: July 12, 2019
    Publication date: September 10, 2020
    Applicant: TOSHIBA MEMORY CORPORATION
    Inventors: Yasuhiro UCHIYAMA, Shinya ARAI, Koichi SAKATA, Takahiro TOMIMATSU
  • Publication number: 20200231046
    Abstract: There is provided an electrically driven vehicle that well balances calculation volumes and communication volumes of two control devices configured to drive and control motors for driving. The electrically driven vehicle comprises at least one motor for driving and a first control device and a second control device configured to control the motor. The first control device is configured to calculate a target torque that is to be output from the motor, based on information including an accelerator position, to calculate a current command based on the calculated target torque, and to send the calculated current command to the second control device. The second control device is configured to use the current command, a phase current of the motor and a rotational angle of the motor such as to drive the motor by feedback control.
    Type: Application
    Filed: December 9, 2019
    Publication date: July 23, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuya TANIGUCHI, Taro SHIMOSAKA, Kunihiro SUZUKI, Ken TOSHIYUKI, Koichi SAKATA
  • Publication number: 20200028430
    Abstract: A power converter may include first and second switching elements connected in parallel each other, first and second diodes connected to positive terminals of the switching elements, first and second current sensors, a reactor, and a controller that alternately turns on the first and second switching elements. One end of the reactor may be connected to first and second intermediate points. The first and second current sensors may detect currents flowing between the reactor and the first intermediate point and between the reactor and the second intermediate point, respectively. The first and second current sensors may respectively include first and second magnetism collecting ring cores, into which a first conductor between the reactor and the first intermediate point and a second conductor between the reactor and the second intermediate point are respectively inserted.
    Type: Application
    Filed: July 1, 2019
    Publication date: January 23, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ken TOSHIYUKI, Koichi SAKATA
  • Patent number: 10474051
    Abstract: Provided is a carrier for a developer of an electrostatic latent image, the carrier including a core particle, and a resin layer covering the core particle, where the resin layer includes metal compound particles, wherein the metal compound particles include magnesium compound particles or barium compound particles, and an exposed amount B (atomic %) of the magnesium or the barium on a surface of the carrier particle satisfies a relationship below: 10.0?B ?1.2.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: November 12, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Mariko Takii, Koichi Sakata, Tohru Suganuma, Masahiro Seki, Masashi Nagayama, Shinya Nakagawa, Kei Niwayama
  • Patent number: 10444651
    Abstract: A carrier is provided including a core particle and a resin layer coating the surface of the core particle. The resin layer includes fine metal particles, and a detected metal element amount A obtained by X-ray photoelectron spectrometry of the surface of the carrier is in a range of 4.0 atomic %?A?20.0 atomic % and an average major-axis length B of the fine metal particle exposing from the resin layer is in a range of 100 nm?B?800 nm.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: October 15, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Mariko Takii, Koichi Sakata, Tohru Suganuma, Masahiro Seki, Masashi Nagayama, Toyoaki Tano, Kohsuke Miyazaki
  • Patent number: 10418376
    Abstract: A semiconductor memory device according to one embodiment, includes a first electrode film, a plurality of semiconductor members, and a charge storage member. The first electrode film includes three or more first portions and a second portion connecting the first portions to each other. The first portions extend in a first direction and are arranged along a second direction that intersects with the first direction. The plurality of semiconductor members are arranged along the first direction between the first portions and extending in a third direction. The third direction intersects with a plane containing the first direction and the second direction. The charge storage member is disposed between each of the semiconductor members and each of the first portions. The second portion is disposed between the semiconductor members.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: September 17, 2019
    Assignee: TOSHIBA MEMORY CORPORATION
    Inventors: Koichi Sakata, Yuta Watanabe, Keisuke Kikutani, Satoshi Nagashima, Fumitaka Arai, Toshiyuki Iwamoto
  • Patent number: 10234783
    Abstract: A carrier including a resin layer including at least one kind of particles, wherein the at least one kind of the particles are particles of barium sulfate, wherein an amount of Ba detected is 0.3 atomic % or greater in a Ba analysis through X-ray photoelectron spectroscopy (XPS) of the carrier, and wherein circle-equivalent diameters of the particles of the barium sulfate are 400 nm or greater but 900 nm or smaller.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: March 19, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Koichi Sakata, Tohru Suganuma, Shohichi Sugimoto, Hiroshi Tohmatsu, Hiroyuki Kishida, Kenichi Mashiko, Toyoaki Tano
  • Patent number: 10197948
    Abstract: A developing device, including: a developer containing toner and carrier; and developer bearer configured to have surface thereof bear the developer and endlessly move, and to develop latent image over surface of latent image bearer by supplying toner in developer to latent image in developing region facing the latent image bearer, wherein carrier contains fine particles, value X in volume resistivity R (=10X) (?·cm) of carrier is 11.5-16.0, developer bearer includes: magnetic field generating unit including a plurality of magnetic poles; and developing sleeve having a cylindrical shape enclosing magnetic field generating unit, and configured to bear developer over outer circumferential surface of cylindrical shape by magnetic force of the magnetic field generating unit and perform surface moving by rotating relative to developing device body, and developing device includes developing sleeve voltage applying unit configured to apply AC component-containing voltage to developing sleeve.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: February 5, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Hitoshi Iwatsuki, Koichi Sakata, Hiroshi Tohmatsu, Toyoaki Tano, Kenichi Mashiko, Mariko Takii, Hiroyuki Kishida, Yoshihiro Murasawa, Keinosuke Kondoh, Toshio Koike, Yutaka Takahashi
  • Publication number: 20190018331
    Abstract: Provided is a carrier for a developer of an electrostatic latent image, the carrier including a core particle, and a resin layer covering the core particle, where the resin layer includes metal compound particles, wherein the metal compound particles include magnesium compound particles or barium compound particles, and an exposed amount B (atomic %) of the magnesium or the barium on a surface of the carrier particle satisfies a relationship below: 10.0?B?1.2.
    Type: Application
    Filed: September 14, 2018
    Publication date: January 17, 2019
    Inventors: Mariko Takii, Koichi Sakata, Tohru Suganuma, Masahiro Seki, Masashi Nagayama, Shinya Nakagawa, Kei Niwayama
  • Patent number: 10114296
    Abstract: A synthetic controlled variable is obtained by obtaining a synthetic quantity using measurement results of a first and a second measuring instruments and corresponding gains (or transfer function) and synthesizing the synthetic quantity and one of the measurement results of the first and the second measuring instruments, respectively, via a high pass filter and a low pass filter. A feedback control system is structured that obtains a control input using a synthetic controlled variable and a desired value, and gives a plant the control input. This makes adding of a high pass filter for removing offset of installation position of the first and the second measuring instruments no longer necessary, and allows a driving system which controls robust driving in a high bandwidth of a plate stage regardless of bandwidth in which resonance appears to be designed.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: October 30, 2018
    Assignee: NIKON CORPORATION
    Inventors: Koichi Sakata, Hiroyoshi Asaumi
  • Patent number: 10103155
    Abstract: A semiconductor memory device according to an embodiment, includes a first semiconductor member, a second semiconductor member, an insulating member, a plurality of electrode films, a first electrode, and a second electrode. The first semiconductor member and the second semiconductor member are separated in a first direction and extending in a second direction. The second direction crosses the first direction. The insulating member is provided between the first semiconductor member and the second semiconductor member. The plurality of electrode films are arranged to be separated from each other along the second direction. Each of the electrode films surrounds the first semiconductor member, the second semiconductor member, and the insulating member when viewed from the second direction. The first electrode is provided between the first semiconductor member and the electrode film. The second electrode is provided between the second semiconductor member and the electrode film.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: October 16, 2018
    Assignee: TOSHIBA MEMORY CORPORATION
    Inventors: Kohei Sakaike, Toshiyuki Iwamoto, Tatsuya Kato, Keisuke Kikutani, Fumitaka Arai, Satoshi Nagashima, Koichi Sakata, Yuta Watanabe
  • Patent number: 10103561
    Abstract: A power supply system comprises a first battery, a second battery, an output electric circuit, a first switching element, a second switching element, and a third switching element. The output electric circuit includes a first electric circuit and a second electric circuit. The second electric circuit has a potential lower than a potential of the first electric circuit. The first, second and third switching elements are provided in series with each other from the first electric circuit toward the second electric circuit. The first battery is provided in parallel with the second switching element. The second battery is provided in parallel with a series connection between the second switching element and the third switching element.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: October 16, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Akihiko Ide, Koichi Sakata
  • Publication number: 20180267421
    Abstract: A carrier is provided including a core particle and a resin layer coating the surface of the core particle. The resin layer includes fine metal particles, and a detected metal element amount A obtained by X-ray photoelectron spectrometry of the surface of the carrier is in a range of 4.0 atomic %?A?20.0 atomic % and an average major-axis length B of the fine metal particle exposing from the resin layer is in a range of 100 nm?B?800 nm.
    Type: Application
    Filed: March 5, 2018
    Publication date: September 20, 2018
    Inventors: Mariko TAKII, Koichi SAKATA, Tohru SUGANUMA, Masahiro SEKI, Masashi NAGAYAMA, Toyoaki TANO, Kohsuke MIYAZAKI
  • Patent number: 10067438
    Abstract: Provided is an electrostatic latent image developing white toner, including: a white toner including at least a binder resin, a white pigment, and a release agent; and a magnetic carrier including at least a core material, and a coating layer coating the core material and made of a coating resin and conductive particles, wherein Ra of the magnetic carrier is in a range of from 0.50 ?m to 1.00 ?m, and a bulk density of the magnetic carrier is in a range of from 2.08 g/cm3 to 2.24 g/cm3.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: September 4, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshihiro Murasawa, Hiroshi Tohmatsu, Hitoshi Iwatsuki, Mariko Takii, Koichi Sakata, Hiroyuki Kishida, Toyoaki Tano, Kenichi Mashiko
  • Patent number: 10031434
    Abstract: A carrier includes a resin layer including Al and Sn and covering the surface of the carrier. A detectable amount of Al is from 1.0% to 12.1% by atom and a ratio (Al/Sn) of the detectable amount of Al to that of Sn is from 2.0 to 50.0 when the carrier is subjected to an X-ray photoelectron spectroscopic (XPS) analysis.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: July 24, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Mariko Takii, Yoshihiro Murasawa, Takahiro Nakamura, Kei Niwayama, Haruki Murata, Masato Taikoji, Koichi Sakata