Patents by Inventor Takuya Miwa

Takuya Miwa 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: 20170246741
    Abstract: A motor control system includes first processing circuitry that controls a motor. An upper-level communication path connects an upper-level communication port of the first processing circuitry to second processing circuitry that sends an instruction to the first processing circuitry via the upper-level communication path. A lower-level communication path connects a lower-level communication port of the first processing circuitry to a plurality of devices connected in series to each other. The devices include rotational angle detection circuitry and output circuitry. The rotational angle detection circuitry detects a rotation angle of the motor. The output circuitry outputs associated information that is associated with the motor and is different from the rotational angle or that is associated with an industrial device associated with the motor.
    Type: Application
    Filed: February 27, 2017
    Publication date: August 31, 2017
    Applicant: Kabushiki Kaisha Yaskawa Denki
    Inventors: Kazutoshi KOBAYASHI, Takuya MIWA, Mamoru FUKUDA, Yoshitaka KASHIWAGI, Hidetsugu KOGA, Kazuhiro IMANAGA, Tadashi OKUBO
  • Publication number: 20170222193
    Abstract: In the case where a film, which has lower strength than a metal can, is used as an exterior body of a secondary battery, a current collector provided in a region surrounded by the exterior body, an active material layer provided on a surface of the current collector, or the like might be damaged when force is externally applied to the secondary battery. A secondary battery that is durable even when force is externally applied thereto is provided. A region that is easily partly bent and a region that is not easily partly bent owing to a protective material provided in the region are intentionally formed to obtain the durable secondary battery.
    Type: Application
    Filed: April 20, 2017
    Publication date: August 3, 2017
    Inventors: Ryota TAJIMA, Minoru TAKAHASHI, Junya GOTO, Takuya MIWA
  • Patent number: 9711292
    Abstract: At least one of an aqueous solution A containing lithium, an aqueous solution B containing iron, manganese, cobalt, or nickel, and an aqueous solution C containing a phosphoric acid includes graphene oxide. The aqueous solution A is dripped into the aqueous solution C, so that a mixed solution E including a precipitate D is prepared. The mixed solution E is dripped into the aqueous solution B, so that a mixed solution G including a precipitate F is prepared. The mixed solution G is subjected to heat treatment in a pressurized atmosphere, so that a mixed solution H is prepared, and the mixed solution H is then filtered. Thus, particles of a compound containing lithium and oxygen which have a small size are obtained.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: July 18, 2017
    Assignee: Semiconductor Energy Laboratory Co., LTD.
    Inventors: Takuya Miwa, Kuniharu Nomoto, Nobuhiro Inoue
  • Publication number: 20170187040
    Abstract: To provide a manufacturing method of graphene oxide that allows mass production through a relatively simple process, at low costs, and with safety and efficiency. A hydrogen peroxide solution, sulfuric acid, and flake graphite are put in a reaction container, and the mixture is stirred to obtain expansion graphite. The synthesized expansion graphite is washed not with pure water but with a saturated aqueous solution of magnesium sulfate (MgSO4) or an organic solvent, whereby a large amount of sulfuric acid is contained between graphite layers. The expansion graphite is subjected to heat treatment or microwave irradiation to form expanded graphite, and a graphite layer is peeled by ultrasonic treatment and then oxidized to form a graphene compound.
    Type: Application
    Filed: December 16, 2016
    Publication date: June 29, 2017
    Inventors: Yumiko YONEDA, Teppei OGUNI, Takuya MIWA, Masaki YAMAKAJI, Ayae TSURUTA
  • Publication number: 20170133673
    Abstract: Occlusion and release of lithium ion are likely to one-dimensionally occur in the b-axis direction of a crystal in a lithium-containing composite oxide having an olivine structure. Thus, a positive electrode in which the b-axes of lithium-containing composite oxide single crystals are oriented vertically to a surface of a positive electrode current collector is provided. The lithium-containing composite oxide particles are mixed with graphene oxide and then pressure is applied thereto, whereby the rectangular parallelepiped or substantially rectangular parallelepiped particles are likely to slip. In addition, in the case where the rectangular parallelepiped or substantially rectangular parallelepiped particles whose length in the b-axis direction is shorter than those in the a-axis direction and the c-axis direction are used, when pressure is applied in one direction, the b-axes can be oriented in the one direction.
    Type: Application
    Filed: January 19, 2017
    Publication date: May 11, 2017
    Inventors: Takuya MIWA, Nobuhiro INOUE, Kuniharu NOMOTO, Junpei MOMO
  • Patent number: 9640831
    Abstract: In the case where a film, which has lower strength than a metal can, is used as an exterior body of a secondary battery, a current collector provided in a region surrounded by the exterior body, an active material layer provided on a surface of the current collector, or the like might be damaged when force is externally applied to the secondary battery. A secondary battery that is durable even when force is externally applied thereto is provided. A region that is easily partly bent and a region that is not easily partly bent owing to a protective material provided in the region are intentionally formed to obtain the durable secondary battery.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: May 2, 2017
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Ryota Tajima, Minoru Takahashi, Junya Goto, Takuya Miwa
  • Publication number: 20170054141
    Abstract: An energy storage device having high capacity per weight or volume and a positive electrode active material for the energy storage device are manufactured. A surface of a main material included in the positive electrode active material for the energy storage device is coated with two-dimensional carbon. The main material included in the positive electrode active material is coated with a highly conductive material which has a structure expanding two-dimensionally and whose thickness is ignorable, whereby the amount of carbon coating can be reduced and an energy storage device having capacity close to theoretical capacity can be obtained even when a conduction auxiliary agent is not used or the amount of the conduction auxiliary agent is extremely small. Accordingly, the amount of carbon coating in a positive electrode and the volume of the conduction auxiliary agent can be reduced; consequently, the volume of the positive electrode can be reduced.
    Type: Application
    Filed: November 3, 2016
    Publication date: February 23, 2017
    Inventors: Kuniharu NOMOTO, Takuya MIWA, Masaki YAMAKAJI, Takahiro KAWAKAMI
  • Patent number: 9556536
    Abstract: Occlusion and release of lithium ion are likely to one-dimensionally occur in the b-axis direction of a crystal in a lithium-containing composite oxide having an olivine structure. Thus, a positive electrode in which the b-axes of lithium-containing composite oxide single crystals are oriented vertically to a surface of a positive electrode current collector is provided. The lithium-containing composite oxide particles are mixed with graphene oxide and then pressure is applied thereto, whereby the rectangular parallelepiped or substantially rectangular parallelepiped particles are likely to slip. In addition, in the case where the rectangular parallelepiped or substantially rectangular parallelepiped particles whose length in the b-axis direction is shorter than those in the a-axis direction and the c-axis direction are used, when pressure is applied in one direction, the b-axes can be oriented in the one direction.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: January 31, 2017
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takuya Miwa, Nobuhiro Inoue, Kuniharu Nomoto, Junpei Momo
  • Publication number: 20160380271
    Abstract: A novel electrode is provided. A novel power storage device is provided. A conductor having a sheet-like shape is provided. The conductor has a thickness of greater than or equal to 800 nm and less than or equal to 20 ?m. The area of the conductor is greater than or equal to 25 mm2 and less than or equal to 10 m2. The conductor includes carbon and oxygen. The conductor includes carbon at a concentration of higher than 80 atomic % and oxygen at a concentration of higher than or equal to 2 atomic % and lower than or equal to 20 atomic %.
    Type: Application
    Filed: June 22, 2016
    Publication date: December 29, 2016
    Inventors: Teruaki OCHIAI, Takahiro KAWAKAMI, Takuya MIWA
  • Patent number: 9490474
    Abstract: An energy storage device having high capacity per weight or volume and a positive electrode active material for the energy storage device are manufactured. A surface of a main material included in the positive electrode active material for the energy storage device is coated with two-dimensional carbon. The main material included in the positive electrode active material is coated with a highly conductive material which has a structure expanding two-dimensionally and whose thickness is ignorable, whereby the amount of carbon coating can be reduced and an energy storage device having capacity close to theoretical capacity can be obtained even when a conduction auxiliary agent is not used or the amount of the conduction auxiliary agent is extremely small. Accordingly, the amount of carbon coating in a positive electrode and the volume of the conduction auxiliary agent can be reduced; consequently, the volume of the positive electrode can be reduced.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: November 8, 2016
    Assignee: Semiconductor Energy Laboratory Co., LTD.
    Inventors: Kuniharu Nomoto, Takuya Miwa, Masaki Yamakaji, Takahiro Kawakami
  • Publication number: 20160079600
    Abstract: An object is to reduce variation in shape of crystals that are to be formed. Solutions containing respective raw materials are made in an environment where an oxygen concentration is lower than that in air, the solutions containing the respective raw materials are mixed in an environment where an oxygen concentration is lower than that in air to form a mixture solution, and with use of the mixture solution, a composite oxide is formed by a hydrothermal method.
    Type: Application
    Filed: November 23, 2015
    Publication date: March 17, 2016
    Inventors: Takuya MIWA, Kuniharu NOMOTO, Junpei MOMO
  • Publication number: 20160047060
    Abstract: Occlusion and release of lithium ion are likely to one-dimensionally occur in the b-axis direction of a crystal in a lithium-containing composite oxide having an olivine structure. Thus, a positive electrode in which the b-axes of lithium-containing composite oxide single crystals are oriented vertically to a surface of a positive electrode current collector is provided. The lithium-containing composite oxide particles are mixed with graphene oxide and then pressure is applied thereto, whereby the rectangular parallelepiped or substantially rectangular parallelepiped particles are likely to slip. In addition, in the case where the rectangular parallelepiped or substantially rectangular parallelepiped particles whose length in the b-axis direction is shorter than those in the a-axis direction and the c-axis direction are used, when pressure is applied in one direction, the b-axes can be oriented in the one direction.
    Type: Application
    Filed: October 27, 2015
    Publication date: February 18, 2016
    Inventors: Takuya MIWA, Nobuhiro INOUE, Kuniharu NOMOTO, Junpei MOMO
  • Patent number: 9252419
    Abstract: Occlusion and release of lithium ion are likely to one-dimensionally occur in the b-axis direction of a crystal in a lithium-containing composite oxide having an olivine structure. Thus, a positive electrode in which the b-axes of lithium-containing composite oxide single crystals are oriented vertically to a surface of a positive electrode current collector is provided. The lithium-containing composite oxide particles are mixed with graphene oxide and then pressure is applied thereto, whereby the rectangular parallelepiped or substantially rectangular parallelepiped particles are likely to slip. In addition, in the case where the rectangular parallelepiped or substantially rectangular parallelepiped particles whose length in the b-axis direction is shorter than those in the a-axis direction and the c-axis direction are used, when pressure is applied in one direction, the b-axes can be oriented in the one direction.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: February 2, 2016
    Assignee: Semiconductor Energy Laboratory Co., LTD.
    Inventors: Takuya Miwa, Nobuhiro Inoue, Kuniharu Nomoto, Junpei Momo
  • Patent number: 9249524
    Abstract: An object is to reduce variation in shape of crystals that are to be formed. Solutions containing respective raw materials are made in an environment where an oxygen concentration is lower than that in air, the solutions containing the respective raw materials are mixed in an environment where an oxygen concentration is lower than that in air to form a mixture solution, and with use of the mixture solution, a composite oxide is formed by a hydrothermal method.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: February 2, 2016
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takuya Miwa, Kuniharu Nomoto, Junpei Momo
  • Publication number: 20160013469
    Abstract: An electronic device having a novel structure, specifically, an electronic device having a novel structure that can be changed into various appearances is provided. Specifically, after an active material layer is formed on one or both surfaces of a current collector, the active material layer in a bent region is partly removed. The removed region of the active material layer can be in a linear shape, a dot shape, or a matrix shape, for example. After the active material layer is formed on one or both surfaces of the current collector, laser processing for removing part of the active material layer in an irradiation region is performed using laser light or the like. On the region where the surface of the current collector is exposed, the active material layer is not provided, and this region is a region that does not function as a battery. Owing to this region, a secondary battery with a wide movable region can be achieved.
    Type: Application
    Filed: June 26, 2015
    Publication date: January 14, 2016
    Inventors: Ryota TAJIMA, Yuugo GOTO, Yumiko YONEDA, Junya GOTO, Takuya MIWA, Masaaki HIROKI
  • Publication number: 20150360517
    Abstract: A motorcycle tire for rough terrain is provided in tread middle regions with middle blocks each provided in its ground contacting top surface with an auxiliary groove extending in the tire circumferential direction.
    Type: Application
    Filed: June 4, 2015
    Publication date: December 17, 2015
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Takuya MIWA
  • Publication number: 20150340664
    Abstract: In the case where a film, which has lower strength than a metal can, is used as an exterior body of a secondary battery, a current collector provided in a region surrounded by the exterior body, an active material layer provided on a surface of the current collector, or the like might be damaged when force is externally applied to the secondary battery. A secondary battery which is resistant to external force is obtained. An opening is provided in a central portion of the secondary battery, and a terminal is formed in the opening. An outer edge of the secondary battery is fixed by thermocompression bonding. In addition, the central portion of the secondary battery is fixed by thermocompression bonding, so that the amount of bending is limited even when the outer edge portion of the secondary battery is bent.
    Type: Application
    Filed: May 20, 2015
    Publication date: November 26, 2015
    Inventors: Minoru TAKAHASHI, Yuugo GOTO, Yumiko YONEDA, Takuya MIWA, Ryota TAJIMA
  • Publication number: 20150333359
    Abstract: In the case where a film, which has lower strength than a metal can, is used as an exterior body of a secondary battery, a current collector provided in a region surrounded by the exterior body, an active material layer provided on a surface of the current collector, or the like might be damaged when force is externally applied to the secondary battery. A secondary battery that is durable even when force is externally applied thereto is provided. A cushioning material is provided in a region surrounded by an exterior body of a secondary battery. Specifically, a cushioning material is provided on the periphery of a current collector such that a sealing portion of an exterior body (film) is located outside the cushioning material.
    Type: Application
    Filed: May 12, 2015
    Publication date: November 19, 2015
    Inventors: Minoru TAKAHASHI, Ryota Tajima, Takuya Miwa, Yuugo Goto
  • Publication number: 20150333360
    Abstract: In the case where a film, which has lower strength than a metal can, is used as an exterior body of a secondary battery, a current collector provided in a region surrounded by the exterior body, an active material layer provided on a surface of the current collector, or the like might be damaged when force is externally applied to the secondary battery. A secondary battery that is durable even when force is externally applied thereto is provided. A region that is easily partly bent and a region that is not easily partly bent owing to a protective material provided in the region are intentionally formed to obtain the durable secondary battery.
    Type: Application
    Filed: May 12, 2015
    Publication date: November 19, 2015
    Inventors: Ryota TAJIMA, Minoru TAKAHASHI, Junya GOTO, Takuya MIWA
  • Patent number: D747679
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: January 19, 2016
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Takuya Miwa