Patents by Inventor Atsushi Muramatsu

Atsushi Muramatsu 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: 11952508
    Abstract: Provided are ITO particles having a non-rectangular parallelepiped shape and an aligned crystal orientation inside particles.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: April 9, 2024
    Assignees: TOHOKU UNIVERSITY, NIKON CORPORATION
    Inventors: Atsushi Muramatsu, Kiyoshi Kanie, Ryoko Suzuki
  • Publication number: 20230391264
    Abstract: A step apparatus for a vehicle includes a base attached to an outer side of a vehicle body, an arm rotatably provided on the base, and a step supported by the arm and movable with respect to the base. The step apparatus for a vehicle is in, by rotation of the arm, a deployed state in which the step is to be used or a stowed state in which the step is stowed under the vehicle body. A first rotation axis of a base end of the arm and a second rotation axis of a tip end of the arm are inclined upward toward an outer side of a vehicle width direction in an attached state in which the step apparatus for a vehicle is attached to the vehicle body.
    Type: Application
    Filed: November 9, 2021
    Publication date: December 7, 2023
    Applicant: AISIN CORPORATION
    Inventors: Masashi MIWA, Atsushi MURAMATSU, Natsuki ITO, Takahisa KOBAYASHI, Norio KATO, Kimihiro KINOSHITA
  • Publication number: 20230391263
    Abstract: A step apparatus for a vehicle includes: an arm rotatably provided on a base; and a step supported by the arm and movably provided, by rotation of the arm, between a deployed position and a stowed position located at an inner side of a vehicle width direction with respect to the deployed position. The step apparatus for a vehicle is in, by the rotation of the arm, a deployed state in which the step is disposed at the deployed position and the step is to be used or a stowed state in which the step is disposed at the stowed position and stowed under a vehicle body. At least one of the step and the base includes a contact portion to be brought into contact with the other one. The contact portion is provided to contact the other one of the step and the base when the step is disposed at the stowed position.
    Type: Application
    Filed: November 9, 2021
    Publication date: December 7, 2023
    Applicant: AISIN CORPORATION
    Inventors: Masashi MIWA, Atsushi MURAMATSU, Natsuki ITO, Takahisa KOBAYASHI, Norio KATO, Kimihiro KINOSHITA
  • Publication number: 20230357011
    Abstract: A method for manufacturing Group-III nitride semiconductor nanoparticles includes synthesizing Group-III nitride semiconductor nanoparticles having a particle size of 16 nm or less by reacting materials containing one or more Group-III elements M in a liquid phase, wherein a coordination solvent is used, and trimethyl M is used as at least one Group-III element material among the materials containing one or more Group-III elements M.
    Type: Application
    Filed: September 13, 2021
    Publication date: November 9, 2023
    Applicant: STANLEY ELECTRIC CO., LTD.
    Inventors: Takuya KAZAMA, Wataru TAMURA, Yasuyuki MIYAKE, Kenji MORIYAMA, Atsushi MURAMATSU, Kiyoshi KANIE
  • Patent number: 11767469
    Abstract: Provided are group-III nitride nanoparticles that prevent the piezoelectric field caused by strains on the nanoparticles, achieving good luminous efficiency. The group-III nitride nanoparticle represented by AlxGayInzN (0?x, y, z?1) incorporating two crystal structures; a wurtzite structure and a zincblende structure, in a single particle. As another example, the group-III nitride nanoparticle has a core-shell structure with a core and a shell, in which the particle constituting the core contains two crystal structures; the wurtzite structure and the zincblende structure, in the particle. Nanoparticles containing the two crystal structures can be produced by using a phosphorus-containing solvent as a reaction solvent, and the mixture ratio of the two crystal structures, (wurtzite structure)/(zincblende structure), is 20/80 or higher.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: September 26, 2023
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Takuya Kazama, Wataru Tamura, Yasuyuki Miyake, Takayuki Omori, Atsushi Muramatsu, Kiyoshi Kanie
  • Publication number: 20230257281
    Abstract: A LiMnO2 production method includes generating cubic crystal LiMnO2 nanoparticles by adding an organic solvent, manganese oxide nanoparticles, and lithium amide in a reaction vessel and heating in an inert atmosphere. and a washing and recovering the generated particles. Wurtzite type MnO nanoparticles are preferably used as the manganese oxide. As a result, LiMnO2 nanoparticles that have a substantially similar particle size to wurtzite type MnO nanoparticles can be obtained from an Mn raw material. Nanoparticles having a hollow structure can be obtained by controlling the reaction temperature.
    Type: Application
    Filed: August 3, 2021
    Publication date: August 17, 2023
    Applicants: STANLEY ELECTRIC CO., LTD., TOHOKU UNIVERSITY
    Inventors: Masafumi NAKAYA, Takuya KAZAMA, Wataru TAMURA, Yasuyuki MIYAKE, Atsushi MURAMATSU, Kiyoshi KANIE
  • Patent number: 11692104
    Abstract: Provided is ITO particles satisfying a relationship expressed in Expression (1) given below. 16×S/P2?0.330 . . . (1) (In the expression, S indicates a particle area in a TEM photographed image, and P indicates a perimeter of the particle).
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: July 4, 2023
    Assignees: TOHOKU UNIVERSITY, NIKON CORPORATION
    Inventors: Atsushi Muramatsu, Kiyoshi Kanie, Ryoko Suzuki, Yasutaka Nishi, Makoto Nakazumi
  • Publication number: 20230166980
    Abstract: Gallium-doped zinc oxide particles having an average particle diameter of from >0 nm to 30 nm and a resistivity of from 0.08 M?·cm to 1.4 M?·cm.
    Type: Application
    Filed: December 6, 2022
    Publication date: June 1, 2023
    Applicants: TOHOKU UNIVERSITY, NIKON CORPORATION
    Inventors: Kiyoshi KANIE, Atsushi MURAMATSU, Yasutaka NISHI, Ryoko SUZUKI
  • Publication number: 20220388862
    Abstract: Single-phase manganese oxide particles having a wurtzite crystal structure. The particles can be obtained by thermally decomposing a compound containing manganese. In this procedure, a reducing agent consisting of at least one of a polyol-based material and an ethylene glycol stearate-based material is added as an additive to the reaction system. It is heated at a first temperature (200° C. or lower) under a reduced pressure atmosphere, then the temperature is raised, and the product is heated at a temperature higher than the first temperature under an inert gas atmosphere.
    Type: Application
    Filed: November 9, 2020
    Publication date: December 8, 2022
    Applicant: STANLEY ELECTRIC CO., LTD.
    Inventors: Takuya KAZAMA, Wataru TAMURA, Yasuyuki MIYAKE, Kenji MORIYAMA, Atsushi MURAMATSU, Kiyoshi KANIE
  • Patent number: 11521649
    Abstract: A method of producing a magnetic powder includes: performing heat treatment on first particles that contain triiron tetraoxide to prepare second particles that contain ?-iron oxide.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: December 6, 2022
    Assignee: Sony Corporation
    Inventors: Atsushi Muramatsu, Masafumi Nakaya, Masaru Terakawa, Satoru Abe, Natsuki Toyosawa, Katsunori Maeshima
  • Patent number: 11506792
    Abstract: A position detection method to be executed by a computer, the position detection method includes transmitting, by a sensor terminal, a signal obtained by performing capture processing on a satellite signal from a satellite of a search target according to an order of the satellites of the search targets; calculating, by a calculation device, a position of the sensor terminal based on a signal transmitted by the sensor terminal; and determining a satellite having a highest discovery probability based on a specific estimation method for second and subsequent search targets, using an index which is reflected larger as the discovery probability of other satellites is higher or lower, in a case where the first satellite is captured when a first search target is determined.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: November 22, 2022
    Assignee: FUJITSU LIMITED
    Inventor: Atsushi Muramatsu
  • Publication number: 20220098480
    Abstract: Provided are group-III nitride nanoparticles that prevent the piezoelectric field caused by strains on the nanoparticles, achieving good luminous efficiency. The group-III nitride nanoparticle represented by AlxGayInzN (0?x, y, z?1) incorporating two crystal structures; a wurtzite structure and a zincblende structure, in a single particle. As another example, the group-III nitride nanoparticle has a core-shell structure with a core and a shell, in which the particle constituting the core contains two crystal structures; the wurtzite structure and the zincblende structure, in the particle. Nanoparticles containing the two crystal structures can be produced by using a phosphorus-containing solvent as a reaction solvent, and the mixture ratio of the two crystal structures, (wurtzite structure)/(zincblende structure), is 20/80 or higher.
    Type: Application
    Filed: September 29, 2021
    Publication date: March 31, 2022
    Applicant: STANLEY ELECTRIC CO., LTD.
    Inventors: Takuya KAZAMA, Wataru TAMURA, Yasuyuki MIYAKE, Takayuki OMORI, Atsushi MURAMATSU, Kiyoshi KANIE
  • Patent number: 11170813
    Abstract: A method of producing a magnetic powder includes performing heat treatment on first particles that contain ferrous oxide to prepare 5 second particles that contain ?-iron oxide.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: November 9, 2021
    Assignee: Sony Corporation
    Inventors: Atsushi Muramatsu, Masafumi Nakaya, Masaru Terakawa, Katsunori Maeshima, Minoru Yamaga
  • Publication number: 20210287714
    Abstract: A method of producing a magnetic powder includes: performing heat treatment on first particles that contain triiron tetraoxide to prepare second particles that contain ?-iron oxide.
    Type: Application
    Filed: September 27, 2017
    Publication date: September 16, 2021
    Inventors: Atsushi MURAMATSU, Masafumi NAKAYA, Masaru TERAKAWA, Satoru ABE, Natsuki TOYOSAWA, Katsunori MAESHIMA
  • Patent number: 11092178
    Abstract: The vehicle component fastening structure includes: a boss receptacle and a boss provided in a pair of the vehicle components, and a fastening member for fastening the boss and the boss receptacle. The boss receptacle has a through-hole penetrating in a fastening axis direction and a nipped portion provided inside the through-hole. The boss has a fastener hole, and a leading end of the boss oriented to a first direction abuts on the nipped portion. The fastening member has a shank inserted into the through-hole and the fastener hole in a second direction and a head abutting on the nipped portion. In the fastened state, a bottom face of the head abuts on the nipped portion, and the entire bottom face and a portion of the nipped portion where the leading end of the boss abuts are placed within a range of the through-hole in the fastening axis direction.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: August 17, 2021
    Assignee: SHIROKI CORPORATION
    Inventors: Atsushi Muramatsu, Kenji Yamamoto, Kenichi Suzuki
  • Patent number: 10998769
    Abstract: A power transmission circuitry transmits power wirelessly to a plurality of power reception circuitry simultaneously. The power transmission circuitry includes, a communication circuit that wirelessly receives information on receiving power of the plurality of power reception circuitry, and a transmitting power control circuit that controls transmitting power based on the information on receiving power of the plurality of power reception circuitry received by the communication circuit.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: May 4, 2021
    Assignee: FUJITSU LIMITED
    Inventor: Atsushi Muramatsu
  • Publication number: 20210002495
    Abstract: Provided is ITO particles satisfying a relationship expressed in Expression (1) given below. 16×S/P2?0.330 . . . (1) (In the expression, S indicates a particle area in a TEM photographed image, and P indicates a perimeter of the particle.
    Type: Application
    Filed: July 14, 2020
    Publication date: January 7, 2021
    Applicants: TOHOKU UNIVERSITY, NIKON CORPORATION
    Inventors: Atsushi Muramatsu, Kiyoshi Kanie, Ryoko Suzuki, Yasutaka Nishi, Makoto Nakazumi
  • Publication number: 20210002494
    Abstract: Provided are ITO particles having a non-rectangular parallelepiped shape and an aligned crystal orientation inside particles.
    Type: Application
    Filed: July 14, 2020
    Publication date: January 7, 2021
    Applicants: TOHOKU UNIVERSITY, NIKON CORPORATION
    Inventors: Atsushi Muramatsu, Kiyoshi Kanie, Ryoko Suzuki
  • Publication number: 20200379119
    Abstract: A position detection method to be executed by a computer, the position detection method includes transmitting, by a sensor terminal, a signal obtained by performing capture processing on a satellite signal from a satellite of a search target according to an order of the satellites of the search targets; calculating, by a calculation device, a position of the sensor terminal based on a signal transmitted by the sensor terminal; and determining a satellite having a highest discovery probability based on a specific estimation method for second and subsequent search targets, using an index which is reflected larger as the discovery probability of other satellites is higher or lower, in a case where the first satellite is captured when a first search target is determined.
    Type: Application
    Filed: May 22, 2020
    Publication date: December 3, 2020
    Applicant: FUJITSU LIMITED
    Inventor: Atsushi MURAMATSU
  • Patent number: 10794106
    Abstract: A wire type window regulator for vehicle that allows easily guiding a drive wire to a wire insertion clearance of a wire guide member and/or a drum housing during assembly is obtained. A wire guide member includes a wire guide groove around which the drive wire is wound, a wire disconnection prevention portion, and an inclination guide surface. The wire disconnection prevention portion is disposed to extend from one region to another region of regions on both sides between which the wire guide groove is interposed. The wire disconnection prevention portion forms a wire insertion clearance from which the drive wire is introducible to the wire guide groove with the other region. The inclination guide surface is disposed in the other region. The inclination guide surface guides the drive wire introduced to the wire guide groove to the wire insertion clearance.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: October 6, 2020
    Assignee: SHIROKI CORPORATION
    Inventors: Atsushi Muramatsu, Toru Ikoma, Yoshiki Sugita