Patents by Inventor Yuki Kawaguchi

Yuki Kawaguchi 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: 20200400879
    Abstract: An optical fiber according to an embodiment of the present disclosure includes a core and a cladding which surrounds the core. The cladding includes an inner cladding layer which surrounds the core and an outer cladding layer which surrounds the inner cladding layer. A maximum value ?n1max of a relative refractive index difference of the core, a minimum value ?n2min of a relative refractive index difference of the inner cladding layer, and a maximum value ?n3max of a relative refractive index difference of the outer cladding layer satisfy a relationship of ?n2min<?n3max<?n1max. A residual stress ?(r) at a radial position r satisfies |d?(r)/dr|?30 MPa/?m in the cladding.
    Type: Application
    Filed: June 11, 2020
    Publication date: December 24, 2020
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Yuki KAWAGUCHI, Yoshiaki TAMURA, Hirotaka SAKUMA, Masato SUZUKI
  • Publication number: 20200390490
    Abstract: A treatment instrument includes a first jaw including a first electrode and a second jaw including a second electrode. The first jaw is openable and closable, together with the first electrode, with respect to the second jaw and the second electrode. The first electrode includes a projection projecting toward the second jaw. In a base of each of the jaws, an extending surface extends from an outer edge surface of a corresponding one of the electrodes toward a side away from the projection in a width direction so as to slope away from in an opening and closing direction of the first and second jaws.
    Type: Application
    Filed: August 26, 2020
    Publication date: December 17, 2020
    Applicant: OLYMPUS CORPORATION
    Inventors: Yuki KAWAGUCHI, Tomoyuki TAKASHINO, Akinori KOBAYASHI
  • Publication number: 20200393614
    Abstract: An optical fiber according to an embodiment includes: a core; an inner cladding surrounding the core and having a refractive index smaller than a refractive index of the core; an outer cladding surrounding the inner cladding and having a smaller refractive index than the refractive index of the core and having a refractive index greater than the refractive index of the inner cladding, in which a ratio of a caustic radius to a MAC-value (caustic radius/MAC-value) at a bending radius of 10 mm at a wavelength of 1625 nm is 2.70 ?m or more.
    Type: Application
    Filed: August 27, 2020
    Publication date: December 17, 2020
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Masato SUZUKI, Yuki KAWAGUCHI, Yoshinori YAMAMOTO, Takemi HASEGAWA
  • Publication number: 20200377419
    Abstract: A method for producing SiC/SiC composite material according to the present invention includes impregnating a substrate with a slurry containing particles of a flaky lubricant to obtain an impregnated body, drying out a solvent of the slurry from the impregnated body, forming an interface layer on surfaces of the SiC fibers by bending the impregnated body, and transferring the particles of the flaky lubricant to the surfaces of the SiC fibers while stretching the particles, and forming a SiC matrix inside the substrate on which the interface layer is formed. Since a thin interface layer of the flaky lubricant can be formed on the surfaces of the SiC fibers by transferring the flaky lubricant to the surfaces of the SiC fibers, the interface layer reaching inside of the substrate can be easily formed.
    Type: Application
    Filed: May 25, 2018
    Publication date: December 3, 2020
    Inventors: Syuichi KUBO, Takashi TAKAGI, Akihide KAWAGUCHI, Hideo KATO, Yuki HOKAZONO
  • Publication number: 20200333528
    Abstract: The optical fiber has an effective area that is greater than or equal to 110 ?m2 and less than or equal to 180 ?m2 at a wavelength of 1550 nm and a cable cut-off wavelength of less than or equal to 1530 nm. An average value of a glass outer diameter in a longitudinal direction is 125±0.5 ?m. When ? is a standard deviation of the glass outer diameter in the longitudinal direction, 3? is greater than or equal to 0.1 ?m and less than or equal to 0.5 ?m.
    Type: Application
    Filed: July 2, 2020
    Publication date: October 22, 2020
    Inventors: Yuki KAWAGUCHI, Yoshiaki TAMURA, Hirotaka SAKUMA
  • Publication number: 20200292750
    Abstract: An optical fiber according to an embodiment has a structure for enabling determination of improvement in transmission loss at a preform stage. The optical fiber includes: a core containing Cl and having an average refractive index lower than a refractive index of pure silica glass; a first cladding containing F; a second cladding; and a resin coating, in which an effective area at a wavelength of 1550 nm is 135 ?m2 or more and 170 ?m2 or less, a ratio of the effective area to a cutoff wavelength ?C is 85.0 ?m or more, a bending loss of an LP01 mode at a wavelength of 1550 nm and at a bending radius of R15 mm is less than 4.9 dB per 10 turns, and the resin coating includes a primary resin layer having a Young's modulus of 0.3 MPa or less.
    Type: Application
    Filed: March 11, 2020
    Publication date: September 17, 2020
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Masato SUZUKI, Yuki KAWAGUCHI, Hirotaka SAKUMA, Yoshiaki TAMURA, Takemi HASEGAWA
  • Publication number: 20200282828
    Abstract: A vehicle driving apparatus including: a rotating electrical machine that acts as a source of driving force for a first wheel and a second wheel; a speed reduction device that reduces a speed of rotation of the rotating electrical machine; a differential gear device that distributes, to the first wheel and the second wheel, the driving force transmitted from the rotating electrical machine via the speed reduction device; a case that houses the rotating electrical machine, the speed reduction device, and the differential gear device; and an oil circulator.
    Type: Application
    Filed: September 28, 2018
    Publication date: September 10, 2020
    Applicant: AISIN AW CO., LTD.
    Inventors: Daiki SUYAMA, Hiroaki SANJI, Mitsuhiro ICHIOKA, Yuki KAWAGUCHI
  • Publication number: 20200249393
    Abstract: The optical fiber offered is capable of not only restraining the attenuation due to glass defects, but also reducing the increase of manufacturing cost. The optical fiber is made of silica glass and includes a core and a cladding. The cladding encloses the core and has a refractive index smaller than that of the core. When the core is divided into inner core and outer core at half of the radius of the core, the average chlorine concentration of the inner core is larger than that of the outer core. The core includes any of the alkali metal group.
    Type: Application
    Filed: April 15, 2020
    Publication date: August 6, 2020
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hirotaka SAKUMA, Yoshiaki TAMURA, Keisei MORITA, Yuki KAWAGUCHI
  • Publication number: 20200241198
    Abstract: An optical fiber in which the increase of attenuation can be reduced is offered. An optical fiber is made of silica glass and includes a core and a cladding enclosing the core. The refractive index of the cladding is smaller than that of the core. The core includes chlorine and any of the alkali metal group, The chlorine concentration is 1 ppm or more in the whole region of the core. In the whole region of the core, the absolute value of rate of radial change of the chlorine concentration is smaller than 2000 ppm/?m.
    Type: Application
    Filed: April 13, 2020
    Publication date: July 30, 2020
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hirotaka SAKUMA, Yoshiaki TAMURA, Yuki KAWAGUCHI
  • Publication number: 20200225432
    Abstract: An optical fiber cable includes: optical fiber units obtained by collecting a plurality of optical fiber ribbons in which a plurality of optical fibers are arranged in parallel; and a slot rod including a plurality of slot grooves formed in a spiral shape in order to store the optical fiber units. The optical fiber units are stranded in a longitudinal direction of the optical fiber cable in a state in which the optical fiber ribbons are not twisted, and the optical fiber units are stored in the longitudinal direction of the optical fiber cable in a state of being untwisted stranding in the slot grooves.
    Type: Application
    Filed: September 20, 2018
    Publication date: July 16, 2020
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hiroki ISHIKAWA, Fumiaki SATO, Ryoei OKA, Yuki KAWAGUCHI, Sotaro IDA
  • Publication number: 20200215920
    Abstract: A vehicle drive device that includes a rotating electrical machine that serves as a drive power source for a first wheel and a second wheel; a differential gear device that distributes drive power from the rotating electrical machine to the first wheel and the second wheel; a reduction device that includes a planetary gear mechanism with a sun gear, a carrier, and a ring gear; and a case that accommodates the rotating electrical machine, the differential gear device, and the reduction device.
    Type: Application
    Filed: August 24, 2018
    Publication date: July 9, 2020
    Applicant: AISIN AW CO., LTD.
    Inventors: Daiki SUYAMA, Hiroaki SANJI, Mitsuhiro ICHIOKA, Yuki KAWAGUCHI, Koji OTA, Kazuyuki SASAKI, Isao FUJISHIMA
  • Publication number: 20200189958
    Abstract: A method for manufacturing an optical fiber is disclosed. The method for manufacturing an optical fiber includes: drawing an optical fiber by heating an optical fiber preform inside a drawing furnace into which a first gas is introduced; and annealing the optical fiber by causing the optical fiber to pass through an annealing furnace disposed downstream of the drawing furnace and adjusted to a temperature lower than a temperature at which the optical fiber preform is heated. In the annealing, a second gas having a lower heat conductivity than the first gas is introduced into the annealing furnace through one or more gas introduction ports such that a total flow rate becomes 3 slm or higher, and a flow rate of the second gas per gas introduction port is adjusted to 30 slm or lower.
    Type: Application
    Filed: August 24, 2018
    Publication date: June 18, 2020
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Yuki KAWAGUCHI, Takahiro SAITO, Shuhei TOYOKAWA
  • Patent number: 10686957
    Abstract: An image processing apparatus that executes a plurality of processes related to a file, includes: a memory that stores a file; a processor that executes virus checking on the file. The memory stores: virus type information that associates a type of a virus detected during the virus checking with at least one of the plurality of processes; and file type information that associates a type of file with at least one of the plurality of processes, and the processor restricts one of the plurality of processes associated with the type of the detected virus, and another of the plurality of processes associated with the type of file possibly infected with the detected virus.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: June 16, 2020
    Assignee: Konica Minolta, Inc.
    Inventors: Toshikazu Kawaguchi, Shinya Hashimoto, Yuki Asai
  • Publication number: 20200185277
    Abstract: A method of processing a workpiece includes: a frame unit preparing step of preparing a frame unit including a tape affixed to an undersurface of the workpiece; a protective film forming step of forming a protective film on a top surface of the workpiece; a cutting step of cutting the workpiece by applying a laser beam; an interval expanding step of widening intervals between chips formed in the cutting step by expanding the tape outward in a radial direction; and an etching step of removing altered regions formed in the respective chips.
    Type: Application
    Filed: December 5, 2019
    Publication date: June 11, 2020
    Inventors: Kenta NAKANO, Hideyuki KAWAGUCHI, Yuki IKEDA, Toshiyuki YOSHIKAWA, Senichi RYO
  • Patent number: 10666002
    Abstract: A novel wire harness connecting structure for a housed circuit assembly is provided. The connecting structure is able to electrically connect a wire harness and a circuit assembly housed in a housing to each other, using a small number of parts, with high space efficiency. The wire harness connecting structure for housed circuit assemblies is used to electrically connect wire harnesses to circuit assemblies housed in a housing, wherein through holes are provided in a wall of the housing, circuit assembly connectors that are provided in the circuit assemblies face the through holes, and harness end connectors that are provided at ends of the wire harnesses are configured to be inserted into the through holes of the housing and to be connected to the circuit assembly connectors of the circuit assemblies.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: May 26, 2020
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Kiyofumi Kawaguchi, Maiko Oda, Takumi Ejima, Toshifumi Suzuki, Yoshikazu Obara, Yuki Wada
  • Patent number: 10656326
    Abstract: An optical fiber in which the increase of attenuation can be reduced is offered. An optical fiber is made of silica glass and includes a core and a cladding enclosing the core. The refractive index of the cladding is smaller than that of the core. The core includes chlorine and any of the alkali metal group. The chlorine concentration is 1 ppm or more in the whole region of the core. In the whole region of the core, the absolute value of rate of radial change of the chlorine concentration is smaller than 2000 ppm/?m.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: May 19, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hirotaka Sakuma, Yoshiaki Tamura, Yuki Kawaguchi
  • Patent number: 10656329
    Abstract: The optical fiber offered is capable of not only restraining the attenuation due to glass defects, but also reducing the increase of manufacturing cost. The optical fiber is made of silica glass and includes a core and a cladding. The cladding encloses the core and has a refractive index smaller than that of the core. When the core is divided into inner core and outer core at half of the radius of the core, the average chlorine concentration of the inner core is larger than that of the outer core. The core includes any of the alkali metal group.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: May 19, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hirotaka Sakuma, Yoshiaki Tamura, Keisei Morita, Yuki Kawaguchi
  • Publication number: 20200137862
    Abstract: A highly efficient high voltage generating device comprises a switching circuit 2 comprising plural switching elements S1˜S4 and connected with a direct current power source circuit 1, a rectifying circuit 4, a primary winding N1 connected with the switching circuit 2, a secondary winding N2 connected with the rectifying circuit 4 and a control circuit 5 to control the switching circuit 2. The control device 5 is configured to perform a current circulation function of passing a current to circulate between the switching circuit 2 and the transformer 3 to reverse polarity of a voltage VCp2 over the secondary winding N2, while keeping on at least one of the switching elements S1˜S4.
    Type: Application
    Filed: October 11, 2019
    Publication date: April 30, 2020
    Applicant: HITACHI, LTD.
    Inventors: Yuki KAWAGUCHI, Shotaro SHINDO, Satoru HATSUMI, Mina OGAWA
  • Publication number: 20200117866
    Abstract: A reading apparatus according to an embodiment includes a captured-image reading section, an article detecting section, an object recognizing section, and a code reading section. The captured-image reading section reads, from an imaging apparatus that captures a captured image associated with distance information indicating distances to articles, the captured image associated with the distance information. The article detecting section detects images of articles in a preset predetermined imaging region in the captured image. The object recognizing section performs, based on the distance information, object recognition processing of an object, the object being an article closest from the imaging apparatus among the articles.
    Type: Application
    Filed: July 18, 2019
    Publication date: April 16, 2020
    Inventors: Hidehiko Miyakoshi, Hitoshi Iizaka, Hidehiro Naito, Yuki Kawaguchi, Naoki Ogomori
  • Patent number: 10617437
    Abstract: A medical treatment implement including: a shaft extending along a longitudinal axis; a housing having distal and proximal portions, a proximal end of the shaft being attached to the distal portion of the housing to extend from the distal to the proximal portion, the elongated shaft being rotatable about the longitudinal axis relative to the housing; an effector attached to a distal end of the shaft, the effector articulating relative to the longitudinal axis; a drive mechanism having an output connected to the effector to articulate the effector relative to the shaft; and an input unit attached to the housing at a position closer to the proximal portion than the distal portion, wherein the input unit receives an operation input and directly inputs the drive mechanism in response to the input, wherein the input unit rotates about the longitudinal axis together with the shaft relative to the housing.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: April 14, 2020
    Assignee: OLYMPUS CORPORATION
    Inventors: Yuki Kawaguchi, Ojiro Kitamura