Patents by Inventor Hiroyuki Yamaguchi

Hiroyuki Yamaguchi 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: 20200094802
    Abstract: A hydraulic circuit comprises: a first pressure-boosting flow path that connects a first main flow path and a first wheel cylinder; a first pressure-boosting valve that is disposed in the first pressure-boosting flow path and that opens in a non-energized state; a first pressure-reducing flow path that connects the first wheel cylinder and a reservoir; a first pressure-reducing valve that is disposed in the first pressure-reducing flow path and that closes in a non-energized state; a second pressure-boosting flow path; a second pressure-boosting valve; a second pressure-reducing flow path; and a second pressure-reducing valve. A control unit comprises: a first drive circuit that controls the first pressure-reducing valve; and a second drive circuit that is separate from the first drive circuit and that controls the second pressure-reducing valve.
    Type: Application
    Filed: December 21, 2017
    Publication date: March 26, 2020
    Applicant: ADVICS CO., LTD.
    Inventors: Osayoshi KATO, Hiroyuki ANDO, Takahiro YAMAGUCHI, Yoshio MASUDA
  • Patent number: 10600554
    Abstract: First and second wires form a wire assembly by being wound around a winding core portion together. The wire assembly includes a twisted wire portion, an inner layer portion, an outer layer portion, a plurality of outward transition portions, and an inward transition portion. The outer layer portion includes a first outer layer portion which is connected to one of the outward transition portions extending from an intermediate position of the inner layer portion and connected to the inward transition portion. The inward transition portion extends to an intermediate position of the inner layer portion.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: March 24, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Ryota Hashimoto, Atsuyoshi Maeda, Chihiro Yamaguchi, Hiroyuki Tei, Kohei Kobayashi
  • Patent number: 10593556
    Abstract: There is provided a method of fabricating a semiconductor device by performing a process on a substrate, which includes: forming a masking film made of a polymer having a urea bond by supplying polymerizing raw materials to a surface of the substrate on which an etching target film formed; forming an etching pattern on the masking film; subsequently, etching the etching target film with a processing gas using the etching pattern; and subsequently, removing the masking film by heating the substrate to depolymerize the polymer.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: March 17, 2020
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Koichi Yatsuda, Takashi Hayakawa, Hiroshi Okuno, Reiji Niino, Hiroyuki Hashimoto, Tatsuya Yamaguchi
  • Patent number: 10586558
    Abstract: A magnetic head includes a main pole and a write shield. The write shield includes a bottom shield, a first side shield and a second side shield. The first side shield has first and second sidewalls. The second side shield has third and fourth sidewalls. Each of the second and fourth sidewalls has a top edge farthest from a top surface of a substrate. The top edge of each of the second and fourth sidewalls is parallel to a medium facing surface. A portion of a top surface of the bottom shield, the first sidewall, and the third sidewall define a receiving section to receive a portion of the main pole. The receiving section has a bottom including a first inclined portion, a second inclined portion, and a third inclined portion.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: March 10, 2020
    Assignee: HEADWAY TECHNOLOGIES, INC.
    Inventors: Yoshitaka Sasaki, Hiroyuki Ito, Kazuki Sato, Shigeki Tanemura, Hironori Araki, Atsushi Yamaguchi, Kei Hirata
  • Publication number: 20200067397
    Abstract: A retarder includes a rotor, a plurality of fins, a plurality of permanent magnets, a switching mechanism, a first cover, a second cover, and a cover-switching mechanism. The fins are provided on an outer peripheral surface of the rotor and inclined with respect to a rotation direction of the rotor. The magnets are arranged inside the rotor. The first cover faces an end face of the rotor and includes a plurality of holes. The second cover protrudes from an outer circumferential edge of the first cover toward a rotor side. The cover-switching mechanism opens the holes in the braking state and closes the holes in the non-braking state. The first cover is disposed on a side on which a leading end portion of each fin is present. The retarder achieves suppressing windage and ensuring a heat dissipation performance.
    Type: Application
    Filed: October 3, 2017
    Publication date: February 27, 2020
    Inventors: Hiroshi NOGAMI, Kenji IMANISHI, Yasutaka NOGUCHI, Hiroyuki YAMAGUCHI, Shotaro KADOKAWA, Takuya FUJITA
  • Publication number: 20200067120
    Abstract: An electrolyte of a solid oxide cell is required to be capable of suppressing both gas cross-leak and electron leak. In addition, it is important from the viewpoint of a reduction in material costs and in the electric resistance of the electrolyte that the electrolyte is made into a thin film and that no expensive noble metal is used. The present invention provides a thin-film-shaped proton conducting electrolyte capable of suppressing both gas cross-leak and electron leak, a solid oxide cell using the proton conducting electrolyte, and a manufacturing method for the proton conducting electrolyte and the solid oxide cell. A proton conducting electrolyte using an oxide material having proton conductivity is provided. The proton conducting electrolyte includes a first portion containing Me (Me=at least any one of Ti, Mn, Fe, Co, Ni, and Cu), and a second portion different in Me content from the first portion.
    Type: Application
    Filed: February 27, 2018
    Publication date: February 27, 2020
    Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Hiroyuki SHIMADA, Toshiaki YAMAGUCHI
  • Patent number: 10571837
    Abstract: A fixing device includes a fixing rotator that is flexible, endless, and rotatable. A heater heats the fixing rotator. A pressure rotator is disposed opposite the fixing rotator. A nip former defines a fixing nip between the fixing rotator and the pressure rotator. A support supports the nip former. The nip former includes a back face that contacts the support and has a nonlinear shape in a longitudinal direction of the nip former.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: February 25, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yoshiki Yamaguchi, Ippei Fujimoto, Hiroyuki Shimada, Takayuki Seki, Takashi Seto, Yoshiyuki Fukuda, Hiroshi Yoshinaga
  • Patent number: 10574090
    Abstract: A mobile terminal is provided with a housing having a rectangular shape in a plan view of the housing defined by two short sides along a lateral direction and two long sides along a longitudinal direction. A camera, a battery, and a circuit board are included in the housing. A wireless charging coil is arranged in the housing and includes a winding portion and two leg portions. A sheet is arranged in the housing. The sheet has a rectangular shape including four edges and four corner portions, wherein each pair of adjacent edges forms a virtual corner, each corner portion is receded inwardly from its corresponding virtual corner by a receding distance, and one of four receding distances is greater than other three of the four receding distances.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: February 25, 2020
    Assignee: Sovereign Peak Ventures, LLC
    Inventors: Yoshio Koyanagi, Koichi Yamamoto, Takanori Hirobe, Hiroyuki Uejima, Kenichiro Tabata, Shuichiro Yamaguchi, Munenori Fujimura, Akio Hidaka, Takumi Naruse
  • Patent number: 10563278
    Abstract: Rail-manufacturing equipment that performs forced cooling on at least a head of a hot rail hot-rolled at or heated to the austenite region temperature or higher. The rail-manufacturing equipment includes a head-cooling header configured to jet a cooling medium toward the head of the rail, a head thermometer configured to measure surface temperature of the head of the rail, and a controller configured to adjust jet of the cooling medium from the head-cooling header. The controller includes a temperature-monitoring unit configured to monitor measurement results by the head thermometer during the forced cooling, and a cooling-rate controller.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: February 18, 2020
    Assignee: JFE STEEL CORPORATION
    Inventors: Kenji Okushiro, Hiroyuki Fukuda, Hideo Kijima, Moriyasu Yamaguchi
  • Patent number: 10556593
    Abstract: A series hybrid vehicle is equipped with an engine, a first motor generator, and a second motor generator. The vehicle has a reduction gear that is a first power transmission mechanism for engaging the engine with the first motor generator, a reduction gear that is a second power transmission mechanism for engaging the first motor generator with a vehicle drive shaft, and a clutch that is capable of engaging the first motor generator with one of the two reduction gears in a switching manner. The vehicle further has a transmission that switches between transmission gear ratios and engages the second motor generator with the vehicle drive shaft.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: February 11, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshiaki Ito, Kosuke Aiki, Kisaburo Hayakawa, Hiroyuki Yamaguchi, Hideto Inagaki, Masaki Okamura
  • Publication number: 20200033777
    Abstract: A fixing device includes a fixing rotator and a pressure rotator that is disposed opposite the fixing rotator. A nip former is disposed inside a loop formed by the fixing rotator and disposed opposite the pressure rotator via the fixing rotator to form a fixing nip between the fixing rotator and the pressure rotator. The fixing rotator slides over the nip former. A flange supports the fixing rotator at both lateral ends of the fixing rotator in a longitudinal direction of the fixing rotator. The nip former includes a base and a thermal conductor that has a thermal conductivity greater than a thermal conductivity of the base. The base is greater than the thermal conductor in the longitudinal direction of the fixing rotator. The base includes a groove that is disposed outboard at least from the thermal conductor in the longitudinal direction of the fixing rotator.
    Type: Application
    Filed: May 22, 2019
    Publication date: January 30, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Ippei FUJIMOTO, Hiroyuki SHIMADA, Yoshiki YAMAGUCHI, Takashi SETO, Takayuki SEKI
  • Publication number: 20200036102
    Abstract: A waveguide device includes a first electrical conductor including a first electrically conductive surface, a second electrical conductor including a second electrically conductive surface opposing the first electrically conductive surface, an electrically-conductive ridge protruding from the second electrically conductive surface, and a plurality of electrically-conductive rods disposed on both sides of the ridge. The plurality of rods include one or more first rods adjoining the ridge. Each first rod includes a first side surface opposing a side surface of the ridge and a second side surface not opposing the side surface of the ridge. The first side surface is flat and perpendicular or substantially perpendicular to the second electrically conductive surface. The second side surface includes a shape that increasingly deviates outward from an axial center of the first rod from the leading end toward the root of the first rod.
    Type: Application
    Filed: July 29, 2019
    Publication date: January 30, 2020
    Inventors: Hiroyuki KAMO, Hideyuki MUTO, Takumi YAMAGUCHI
  • Publication number: 20200024709
    Abstract: A cold-rolled steel sheet is provided that has a tensile strength of 980 MPa or more, and has a prescribed chemical composition. The microstructure is composed of, in area %, ferrite: 1 to 29%, retained austenite: 5 to 20%, martensite: less than 10%, pearlite: less than 5%, and the balance: bainite and/or tempered martensite. The total sum of the lengths of phase boundaries where ferrite comes in contact with martensite or retained austenite having a circle-equivalent radius of 1 ?m or more is 100 ?m or less per 1000 ?m2. The cold-rolled steel sheet is excellent in workability and low-temperature toughness, and in particular is excellent in low-temperature toughness after introduction of plastic strain.
    Type: Application
    Filed: March 31, 2017
    Publication date: January 23, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Takafumi YOKOYAMA, Riki OKAMOTO, Yuji YAMAGUCHI, Kazuki SHIOKAWA, Yuichi NAKAHIRA, Hiroyuki KAWATA
  • Publication number: 20200019314
    Abstract: A memory controller specifies, from a nonvolatile memory, a final page candidate, which is a candidate to be the physical page to which data is last written in a logical block. The memory controller executes an upward check process to determine whether the number of programmed physical pages is among a first range number of physical pages in a reverse order from the final page candidate is equal to or greater than a first reference value. The memory controller executes a downward check process determining whether the number of programmed physical pages is among a second range number of physical pages existing in the downward order from the final page candidate is equal to or less than a second reference value, and specifies the physical page to which data is last written in the logical block from results of the upward check process and the downward check process.
    Type: Application
    Filed: April 2, 2019
    Publication date: January 16, 2020
    Applicant: TOSHIBA MEMORY CORPORATION
    Inventors: Ryoichi KATO, Hiroyuki YAMAGUCHI
  • Publication number: 20200010619
    Abstract: A fluorine-containing ether compound of the present invention is represented by the following General Formula (1). (In the General Formula (1), X is a trivalent atom or a trivalent atom group, A is a linking group including at least one polar group, B is a linking group having a perfluoropolyether chain, and D is a polar group or a substituent having a polar group at the end.) [Chem.
    Type: Application
    Filed: February 6, 2018
    Publication date: January 9, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Takuya MINAMI, Yoshishige OKUNO, Yuta YAMAGUCHI, Ryuuta MIYASAKA, Naoya FUKUMOTO, Hiroko HATTORI, Hiroyuki TOMITA, Michio SERI, Naoko ITO, Ichiro OTA, Katsumi MUROFUSHI
  • Patent number: 10530008
    Abstract: The present invention relates to a method for producing lithium fluorosulfonate which comprises reacting a lithium salt and fluorosulfonic acid in a nonaqueous solvent, wherein the lithium salt is a lithium salt not generating water through the reaction step.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: January 7, 2020
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Daisuke Kawakami, Ryo Yamaguchi, Hiroyuki Tokuda, Masahiro Takehara
  • Publication number: 20190393083
    Abstract: A method of manufacturing a semiconductor device by performing a process on a substrate includes: forming a protective layer made of a polymer having a urea bond by supplying a raw material for polymerization to a surface of a substrate on which a protected film to be protected is formed; forming a sealing film at a first temperature lower than a second temperature at which the polymer is depolymerized so cover a portion where the protective layer is exposed; subsequently, subjecting the substrate to a treatment at a third temperature equal to or higher than the second temperature at which the polymer as the protective layer is depolymerized; subsequently, performing a treatment which causes damage to the protected film when the protective layer is not present; and after the performing a treatment which causes damage to the protected film, depolymerizing the polymer by heating the substrate.
    Type: Application
    Filed: September 6, 2019
    Publication date: December 26, 2019
    Inventors: Tatsuya YAMAGUCHI, Reiji NIINO, Hiroyuki HASHIMOTO, Syuji NOZAWA, Makoto FUJIKAWA
  • Publication number: 20190393764
    Abstract: An eddy current retarder includes a brake drum, a magnet retention ring, and a switch mechanism. The brake drum is fixed to a rotating shaft. The magnet retention ring is arranged inside the drum and retains magnets at regular intervals entirely in a circumferential direction such that the magnets face the inner peripheral surface of the drum. The switch mechanism includes switch plates that switch, during braking, to a state in which magnetic circuits develop between the magnets and the drum, and switch, during non-braking, to a state in which no magnetic circuits develop. Protrusions are provided on an end face of the drum at regular intervals entirely in the circumferential direction. Electricity generating coils are provided in a non-rotating part of a vehicle at regular intervals entirely in the circumferential direction such that the electricity generating coils face the regions of the end face of the drum.
    Type: Application
    Filed: September 6, 2019
    Publication date: December 26, 2019
    Inventors: Kenji IMANISHI, Hiroyuki YAMAGUCHI, Shotaro KADOKAWA, Takuya FUJITA, Hiroshi NOGAMI
  • Publication number: 20190382676
    Abstract: A fluorine-containing ether compound represented by Formula (1) is provided. R1—R2—CH2—R3—CH2—R4—R5 ??(1) (In Formula (1), R1 and R5 each represents a group having a heterocyclic ring and may be the same as or different from each other, R2 and R4 each represents a divalent linking group having a polar group and play be the same as or different from each other, and R3 represents a perfluoropolyether chain.
    Type: Application
    Filed: January 5, 2018
    Publication date: December 19, 2019
    Applicant: SHOWA DENKO K.K.
    Inventors: Yuta YAMAGUCHI, Daisuke YAGYU, Naoya FUKUMOTO, Shoko UETAKE, Tsuyoshi KATO, Hiroyuki TOMITA, Ryuuta MIYASAKA, Katsumi MUROFUSHI
  • Publication number: 20190383362
    Abstract: A speed reducer capable of reliably reducing and changing speed while suppressing heat generation and abrasion includes: a plurality of gears rotatably supported on an output shaft; a shifter engageable with an engagement gear selected from the plurality of gears to couple the engagement gear to the output shaft; and a plurality of bushes disposed in an annular groove formed in the shifter to move the shifter to the engagement gear and thereby engage the shifter with the engagement gear; and a bush support supporting the plurality of bushes so as to allow them to swing individually.
    Type: Application
    Filed: February 9, 2018
    Publication date: December 19, 2019
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Hiroyuki AKIYAMA, Yasuo YOSHII, Yuji KONISHI, Kazuo YAMAGUCHI, Kazuo IRITANI