Patents by Inventor Keita Yamamoto

Keita Yamamoto 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).

  • Patent number: 11982713
    Abstract: Provided are an information processing device, an information processing system, an information processing method, and a computer program capable of visually and easily grasping a state of an energy storage device.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: May 14, 2024
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Wataru Yamamoto, Hitoshi Matsushima, Keita Nakai, Tetsuro Matsumoto
  • Patent number: 11979694
    Abstract: An optical and electronic integrated switch includes a network processor that controls the functions of the packet switch, a plurality of optical transceivers having photoelectric conversion functions, and a plurality of optical switches. The optical switches include different types of optical core switch and a plurality of optical-path selection switches. The optical transceivers provided near the processor have a regenerative relay function that regenerates optical signals and turns back the optical signals, and perform optical communication with a communication counterpart via the optical switches. In the optical communication, optical switches of the different types can cooperate to set paths for optical cut-through in which path selection is performed such that inputted optical signals are outputted without the intervention of the processor. This optical cut-through can be effectively performed without imposing a signal processing burden that consumes electric power on the processor.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: May 7, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Osamu Moriwaki, Shunichi Soma, Keita Yamaguchi, Kenya Suzuki, Seiki Kuwabara, Tetsuro Inui, Shuto Yamamoto, Seiji Okamoto, Hideki Nishizawa
  • Patent number: 11930309
    Abstract: A photonics-electronics convergence switch with which, even if an optical network system is built by combining a plurality of packet switches, the amount of processing in the packet switches does not increase, the optical network system operates with low electric power consumption, and this enables wide-range optical communication between the nodes of a communication origin and of a communication partner, includes a network processor that is an electronic circuit configured to control the functions of the packet switch, a plurality of optical transmitter-receivers having photoelectric conversion functions, and a plurality of optical switches.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: March 12, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Keita Yamaguchi, Osamu Moriwaki, Shunichi Soma, Kenya Suzuki, Seiki Kuwabara, Tetsuro Inui, Shuto Yamamoto, Seiji Okamoto, Hideki Nishizawa
  • Patent number: 11923950
    Abstract: A relay device that relays between a plurality of radio devices that perform radio communication with terminals, and at least one radio control device that controls the radio devices, the relay device including: a replication necessity determination unit that determines whether or not to replicate a downlink signal received from the radio control device; a signal replicating unit that makes the same number of copies of a downlink signal as the number of destination radio devices only when the replication necessity determination unit determines that the downlink signal is to be replicated; and a downlink signal assignment unit that transfers a downlink signal that has been determined by the replication necessity determination unit as a signal that is not to be replicated, and downlink signals replicated by the signal replicating unit, to the radio devices respectively corresponding thereto.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: March 5, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Naotaka Shibata, Hirofumi Yamamoto, Keita Takahashi, Noriyuki Ota, Jun Terada
  • Publication number: 20230314970
    Abstract: A method for producing an electrostatic image developing toner includes a step 1 of producing toner particles by a wet process, the toner particles including an amorphous polyester resin, a crystalline polyester resin, and a vinyl resin, and a step 2 of bringing acidic water into contact with the toner particles.
    Type: Application
    Filed: September 22, 2022
    Publication date: October 5, 2023
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Keita YAMAMOTO, Daisuke NOGUCHI, Yuji ISSHIKI
  • Patent number: 11760845
    Abstract: Producing a resin particle dispersion using an apparatus including: two or more resin particle dispersion production lines each including an emulsification tank in which a resin is subjected to phase inversion emulsification using two or more organic solvents and an aqueous medium to obtain a phase-inverted emulsion, a distillation tank in which the organic solvents are removed from the phase-inverted emulsion by reduced pressure distillation to obtain a resin particle dispersion, and plural distillate collection tanks that collect distillates formed during the reduced pressure distillation according to respective target distillate compositions; and a reusable storage tank that collects and stores a distillate collected in at least one collection tank among the distillates collected in the plural collection tanks in each of the two or more production lines, and delivering the distillate to the emulsification tank in at least one production line to reuse the distillate for producing a phase-inverted emulsion.
    Type: Grant
    Filed: September 2, 2021
    Date of Patent: September 19, 2023
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Kenji Higashi, Keita Yamamoto, Takashi Inukai, Kazuhiko Nakamura, Yuji Isshiki
  • Publication number: 20230290666
    Abstract: A semiconductor manufacturing apparatus includes: a carrier jig including a mounting section having an adsorption hole for adsorbing a substrate to be mounted and a frame section for holding a peripheral edge of the substrate; and a stage including a mounting section having a suction port communicating with the adsorption hole of the carrier jig to adsorb the substrate and a heating device for heating the substrate.
    Type: Application
    Filed: March 7, 2023
    Publication date: September 14, 2023
    Inventor: Keita YAMAMOTO
  • Publication number: 20230215770
    Abstract: A semiconductor manufacturing apparatus includes an imaging device that images a die; a lighting device having a light source that is a point light source or a line light source; and a controller configured to apply a light beam to a part of the die by the light source to form a bright field area on the die, and repeat moving the bright field area at a predetermined pitch and imaging of the die to inspect an inside of the bright field area.
    Type: Application
    Filed: December 19, 2022
    Publication date: July 6, 2023
    Inventors: Hideharu KOBASHI, Keita YAMAMOTO, Akio MATSUZOE
  • Patent number: 11675285
    Abstract: An electrostatic image developing toner includes toner particles containing a binder resin. In a differential scanning calorimetry curve of the toner particles, Tg1 is 58° C. or more and 68° C. or less, and Tg1?Tg2 is 20° C. or more and 40° C. or less, where Tg1 is a lowest onset temperature in an endothermic change during a first temperature increase, and Tg2 is a lowest onset temperature in an endothermic change during a second temperature increase.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: June 13, 2023
    Assignee: FUJIFILM BUSINESS INNOVATION CORP.
    Inventors: Daisuke Tomita, Keita Yamamoto, Daisuke Noguchi, Kazuhiko Nakamura, Hiroshi Nakazawa
  • Publication number: 20230095496
    Abstract: A toner for developing an electrostatic charge image incorporates toner particles that contain binder resins including an amorphous polyester resin and a crystalline polyester resin, an ester-based release agent, and a polycondensate of a styrene-acrylic resin and a polyolefin resin. The polycondensate of styrene-acrylic and polyolefin resins has a storage modulus G?SP (70) at 70° C. of 1×104 Pa or more and 1×107 Pa or less and a storage modulus G?SP (90) at 90° C. of 1×103 Pa or more and 1×106 Pa or less in dynamic rheometry. The toner particles have a storage modulus G?T (70) at 70° C. of 1×104 Pa or more and 1×106 Pa or less and a storage modulus G?T (90) at 90° C. of 1×103 Pa or more and 1×105 Pa or less in dynamic rheometry.
    Type: Application
    Filed: March 28, 2022
    Publication date: March 30, 2023
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Shinya SAKAMOTO, Daisuke ISHIZUKA, Keita YAMAMOTO, Eiji KAWAKAMI
  • Publication number: 20230086684
    Abstract: A toner for developing an electrostatic charge image incorporates toner particles that contain binder resins, in which: the binder resins include amorphous resins and at least one crystalline resin, the amorphous resins including amorphous resin a1 and amorphous resin a2, the crystalline resin including crystalline resin cl; and 10,000?Mw(a2)?Mw(a1)?150,000??(1), and |SP(a1)?SP(c1)|/|SP(a2)?SP(c1)|?0.9??(2), where Mw (al) is the weight-average molecular weight of amorphous resin a1, Mw (a2) is that of amorphous resin a2, SP (a1) is the solubility parameter (SP) of amorphous resin a1, SP (a2) is that of amorphous resin a2, and SP (c1) is that of crystalline resin c1.
    Type: Application
    Filed: March 28, 2022
    Publication date: March 23, 2023
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Daisuke ISHIZUKA, Eiji KAWAKAMI, Shinya SAKAMOTO, Keita YAMAMOTO
  • Patent number: 11592107
    Abstract: A gasket for sealing a gap between a through hole formed on a wall body and a pipe to be inserted into the through hole, the gasket being provided for the pipe and made of tubular elastic material, the gasket having an inner circumferential lip portion which elastically contacts an outer circumferential face of the pipe; and an outer circumferential lip portion which elastically contacts an inner circumferential face of the through hole; an inner seal area on an inner circumferential side where the inner circumferential lip portion is provided is located at a position so that the inner seal area does not overlap in a radial direction with an outer seal area of an outer circumferential side where the outer circumferential lip portion is provided.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: February 28, 2023
    Assignees: UCHIYAMA MANUFACTURING CORP., TOYOTA JIDOSH KABUSHIKI KAISHA
    Inventors: Keita Yamamoto, Takefumi Tanaka, Ryusuke Baba
  • Publication number: 20220390866
    Abstract: A toner for developing an electrostatic charge image contains toner particles that contain binder resins including an amorphous resin and a crystalline resin and also contain an oligomer. The molecular weight distribution curve of the toner measured by gel permeation chromatography has its highest peak in a range of molecular weights from 5000 to 50000 and a peak or shoulder in a range of molecular weights from 500 to 5000. In a cross-sectional observation of the toner particles, domains of the crystalline resin have an average length of major axis of 100 nm or more and 1000 nm or less.
    Type: Application
    Filed: October 6, 2021
    Publication date: December 8, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Daisuke ISHIZUKA, Keita YAMAMOTO
  • Publication number: 20220373909
    Abstract: An electrostatic image developing toner includes toner particles containing a binder resin. In a differential scanning calorimetry curve of the toner particles, Tg1 is 58° C. or more and 68° C. or less, and Tg1?Tg2 is 20° C. or more and 40° C. or less, where Tg1 is a lowest onset temperature in an endothermic change during a first temperature increase, and Tg2 is a lowest onset temperature in an endothermic change during a second temperature increase.
    Type: Application
    Filed: August 20, 2021
    Publication date: November 24, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Daisuke TOMITA, Keita YAMAMOTO, Daisuke NOGUCHI, Kazuhiko NAKAMURA, Hiroshi NAKAZAWA
  • Patent number: 11491343
    Abstract: A coil apparatus for use in a transcranial magnetic stimulation apparatus is provided to further increase an electric field intensity on a head surface. The coil apparatus includes a wound-wire coil disposed on or near a head surface so as to generate a current by an induced electric field through electromagnetic induction in a magnetic stimulation-target region of a brain for stimulating neurons. The wound-wire coil includes a near-head-surface conductive wire portion disposed on or near the head surface, and a far-head-surface conductive wire portion disposed farther from the head surface than the near-head-surface conductive wire portion. A distance between the near-head-surface conductive wire portion and the far-head-surface conductive wire portion is set to be changed so that an intensity of the induced electric field becomes larger than that of a surrounding region of the magnetic stimulation-target region.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: November 8, 2022
    Assignees: THE UNIVERSITY OF TOKYO, OSAKA UNIVERSITY
    Inventors: Youichi Saitoh, Masaki Sekino, Keita Yamamoto
  • Publication number: 20220306817
    Abstract: A method for producing a resin particle dispersion includes using a resin particle dispersion production apparatus including: two or more resin particle dispersion production lines each including an emulsification tank in which a resin is subjected to phase inversion emulsification using two or more organic solvents and an aqueous medium to thereby obtain a phase-inverted emulsion, a distillation tank in which the organic solvents are removed from the phase-inverted emulsion by reduced pressure distillation to thereby obtain a resin particle dispersion, and plural distillate collection tanks that collect distillates formed during the reduced pressure distillation according to respective target distillate compositions; and a reusable distillate storage tank A that collects and stores a distillate collected in at least one distillate collection tank A among the distillates collected in the plural distillate collection tanks in each of the two or more resin particle dispersion production lines.
    Type: Application
    Filed: September 2, 2021
    Publication date: September 29, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Kenji HIGASHI, Keita YAMAMOTO, Takashi INUKAI, Kazuhiko NAKAMURA, Yuji ISSHIKI
  • Publication number: 20220308480
    Abstract: A method for producing a resin particle dispersion includes: preparing a phase-inverted emulsion by phase inversion emulsification of a resin using an organic solvent and an aqueous medium; and removing the organic solvent from the phase-inverted emulsion by reduced pressure distillation.
    Type: Application
    Filed: August 19, 2021
    Publication date: September 29, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Keita YAMAMOTO, Takashi INUKAI, Yuji ISSHIKI
  • Publication number: 20220306815
    Abstract: A method for producing a resin particle dispersion includes: obtaining a phase-inverted emulsion by adding a neutralizer to a resin solution prepared by dissolving a resin having an acid value in an organic solvent to thereby neutralize the resin and then adding an aqueous medium to the resulting resin solution to subject the resin to phase inversion emulsification; and removing the organic solvent from the phase-inverted emulsion. In the course of obtaining the phase-inverted emulsion, a maximum agitation power per unit mass (kg) of the resin when the resin solution containing the aqueous medium added thereto is agitated to perform the phase inversion emulsification is from 0.4 W to 20 W inclusive.
    Type: Application
    Filed: August 25, 2021
    Publication date: September 29, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Takashi INUKAI, Keita Yamamoto
  • Publication number: 20220306814
    Abstract: A method for producing a resin particle dispersion includes: preparing a phase-inverted emulsion by phase inversion emulsification of a resin using an organic solvent and an aqueous medium; and removing the organic solvent from the phase-inverted emulsion contained in a distillation tank by reduced pressure distillation. During the reduced pressure distillation, the rate of pressure reduction in an environment in which the pressure inside the distillation tank is equal to or higher than vapor pressure and equal to or lower than (the vapor pressure+5 kPa) when the concentration of the organic solvent in the phase-inverted emulsion is in the range of 30% by mass or less to 1% by mass or more is from 0.01 kPa/min to 0.5 kPa/min inclusive until the pressure inside the distillation tank reaches a preset reduced pressure for the reduced pressure distillation.
    Type: Application
    Filed: August 31, 2021
    Publication date: September 29, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Takashi INUKAI, Keita YAMAMOTO
  • Publication number: 20220308481
    Abstract: A method for producing a resin particle dispersion includes: preparing a phase-inverted emulsion by phase inversion emulsification of a resin using a neutralizer, an organic solvent, and an aqueous medium; and removing the organic solvent from the phase-inverted emulsion to thereby obtain a resin particle dispersion. The acid value A of the resin is from 8 mg KOH/g to 20 mg KOH/g inclusive. The rate of neutralization of the resin with the neutralizer is 60% or more and less than 150%. The organic solvent contains at least one organic solvent B selected from the group consisting of esters and ketones and at least one organic solvent C selected from alcohols. In the phase-inverted emulsion, the acid value A of the resin, the mass Wr (kg) of the resin, the mass Wb (kg) of the organic solvent B, and the mass Wc (kg) of the organic solvent C satisfy relations represented by the following formulas 1 to 6: 30 (Wb+Wc)/(Wr/100) 250, ??formula 1 0.67 Wb/(Wb+Wc) 0.
    Type: Application
    Filed: August 24, 2021
    Publication date: September 29, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Keita YAMAMOTO, Takashi INUKAI, Yuji ISSHIKI