Patents by Inventor Hideki Nakai

Hideki Nakai 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: 12235114
    Abstract: A routine-run-vehicle determination unit determines a route from a departure place to a destination of a following vehicle, and a plurality of routine-run vehicles in charge of a plurality of routine-run areas overlapping the route. For each of the routine-run vehicles, a route determination unit determines a routine-run route on which the following vehicle and another following vehicle that are going to travel in a routine-run area in charge can follow, and determines a portion of the routine-run route overlapping an adjacent routine-run area as a takeover position at which the following vehicle is taken over to the next routine-run vehicle. A reservation management unit transmits routine-run-vehicle reservation data including identification information of the following vehicle, and the routine-run route and the takeover position to each of the routine-run vehicles.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: February 25, 2025
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hideki Fukuhara, Yoshihiro Nakai
  • Publication number: 20250029990
    Abstract: A secondary battery includes a positive electrode containing a positive electrode active material, a negative electrode, and an electrolytic solution. The positive electrode active material contains a layered rock salt-type compound, and the layered rock salt-type compound contains nickel, cobalt, and aluminum as constituent elements. When a sum of contents of nickel, cobalt, and aluminum in the layered rock salt-type compound is regarded as 100 parts by mol, a content of the nickel is 87 parts by mol or more and 100 parts by mol or less, a content of the cobalt is 0 parts by mol or more and 11 parts by mol or less, and a content of the aluminum is 0 parts by mol or more and 8 parts by mol or less. In surface analysis of the positive electrode active material using X-ray photoelectron spectroscopy, a concentration ratio represented by Formula (1) is 1.60 or less and an intensity ratio represented by Formula (2) is 0.
    Type: Application
    Filed: October 9, 2024
    Publication date: January 23, 2025
    Inventors: Yukihiro KATOU, Akiko NAGAHARA, Gerile NAREN, Hideki NAKAI
  • Publication number: 20250021297
    Abstract: An acoustic device configured to mix two or more music pieces is provided. The acoustic device includes a display controller configured to switchably display information related to audio mixing on a display device; and a reservation unit configured to set the music pieces to be mixed and a playback start point in each of the music pieces. The display controller is configured to switchably display on the display device a first screen, on which a first image indicating a playback status of a first music piece being played is moved based on a second image indicating a current playback point of the first music piece, and a second screen, on which the first image is fixedly displayed and the second image is moved based on the first image in accordance with the current playback point. The second screen includes a reservation-setting screen related to the reservation unit.
    Type: Application
    Filed: November 21, 2022
    Publication date: January 16, 2025
    Inventors: Toshihisa Sabi, Hideki Miyata, Toshiki Nakai, Nao Takagi, Shintaro Kido
  • Publication number: 20250006905
    Abstract: A secondary battery is provided and includes a positive electrode including a positive electrode active material layer, a negative electrode, and an electrolytic solution including an electrolyte salt. The positive electrode active material layer includes a plurality of positive electrode active material particles, and the positive electrode active material particles each include a central portion including a lithium composite oxide and a covering portion provided on a surface of the central portion. The lithium composite oxide has a crystal structure of a layered rock salt type and includes lithium, nickel, and other elements as constituent elements. The covering portion includes lithium, fluorine, boron, and oxygen as constituent elements. The electrolyte salt includes a fluorine-containing lithium salt.
    Type: Application
    Filed: June 25, 2024
    Publication date: January 2, 2025
    Inventors: Yukihiro KATOU, Akiko NAGAHARA, Hideki NAKAI
  • Publication number: 20240387820
    Abstract: A positive electrode active material is provided and includes a lithium nickel composite oxide. The lithium nickel composite oxide has a composition formula represented by LiaNixCoyAl1-x-yO2, x is 0.8 or more and 1 or less, y is 0 or more and 0.2 or less, and a is 0.8 or more and 1.05 or less. Lithium hydroxide and lithium carbonate are contained in a supernatant of a stirred product of the positive electrode active material and pure water in a total amount of 1.0 mass % or less with respect to the positive electrode active material, when measured by a potentiometric titration method. In the positive electrode active material, an intensity ratio of a peak top in 850 eV or more and 854 eV or less to a peak top in 854 eV or more and 860 eV or less is 1.05 or more and 1.45 or less in an X-ray absorption fine structure (XAFS) spectrum for an L-absorption edge of nickel.
    Type: Application
    Filed: July 31, 2024
    Publication date: November 21, 2024
    Inventors: Yukihiro KATOU, Hitoshi NISHIMURA, Shota FUJINAKA, Akiko NAGAHARA, Gerile NAREN, Hideki NAKAI
  • Patent number: 12095118
    Abstract: A secondary battery includes a wound electrode body. The wound electrode body includes a positive electrode, a negative electrode, and a separator. The positive electrode and the negative electrode are stacked on each other with the separator interposed therebetween and are wound about a winding axis. The wound electrode body has a section perpendicular to the winding axis. The section has an elongated shape that includes a flat part and a pair of curved parts. The curved parts oppose each other with the flat part interposed therebetween. The negative electrode includes a negative electrode current collector and a negative electrode active material layer provided on the negative electrode current collector. A width of the wound electrode body, a wound-layer number of the wound electrode body, and a ratio of a second distance to a first distance satisfy at least one of Condition A and Condition B.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: September 17, 2024
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takaaki Matsui, Kazuki Honda, Rikako Imoto, Hideki Nakai, Takashi Sato
  • Patent number: 12034108
    Abstract: A secondary battery includes a wound electrode body having a positive electrode, a negative electrode, and a separator. The positive electrode and the negative electrode are stacked on each other with the separator interposed therebetween and are wound about a winding axis. The wound electrode body has a section perpendicular to the winding axis. The section has an elongated shape that includes a flat part and a pair of curved parts. The curved parts oppose each other with the flat part interposed therebetween. The negative electrode includes a negative electrode current collector and a negative electrode active material layer provided on the negative electrode current collector. A ratio of a second distance to a first distance is less than 1.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: July 9, 2024
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Rikako Imoto, Takaaki Matsui, Hideki Nakai
  • Publication number: 20230327217
    Abstract: A battery having a low internal resistance is provided. A secondary battery includes an electrode wound body, a positive electrode current collector plate, a negative electrode current collector plate, and an outer package. The electrode wound body has a structure in which a positive electrode having a band shape and a negative electrode having a band shape are stacked with a separator interposed therebetween, and are in a wound configuration. The outer package contains the electrode wound body, the positive electrode current collector plate, and the negative electrode current collector plate. The negative electrode includes, on a negative electrode foil having a band shape, a negative electrode active material covered part covered with a negative electrode active material layer, and a negative electrode active material uncovered part.
    Type: Application
    Filed: April 18, 2023
    Publication date: October 12, 2023
    Inventors: Rikako IMOTO, Masashi TAKAHASHI, Hideki NAKAI
  • Publication number: 20230132785
    Abstract: A secondary battery includes a positive electrode, a negative electrode, a negative electrode wiring line, and an electrolytic solution. The negative electrode wiring line is coupled to the negative electrode. The negative electrode includes a negative electrode active material layer and a film. The film covers a surface of the negative electrode active material layer. The film includes sulfur as a constituent element. The electrolytic solution includes a chain carboxylic acid ester.
    Type: Application
    Filed: December 29, 2022
    Publication date: May 4, 2023
    Inventors: Tomomi SAKUMA, Shinichi KATAYAMA, Hideki NAKAI
  • Publication number: 20220013812
    Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The electrolytic solution includes a solvent and an electrolyte salt. The solvent includes a first ester compound and a second ester compound. The first ester compound is represented by R1-C(?O)—OR2, where each of R1 and R2 represents a first alkyl group, R1 has carbon number from 1 to 3 both inclusive, and the sum of the carbon number of R1 and the carbon number of R2 is from 3 to 5 both inclusive. The second ester compound is represented by R3O—FP(?O)—OR4, where each of R3 and R4 represents a second alkyl group, and the sum of the carbon number of R3 and the carbon number of R4 is from 2 to 10 both inclusive. The content of the first ester compound in the solvent is 30 vol % or more.
    Type: Application
    Filed: September 27, 2021
    Publication date: January 13, 2022
    Inventors: Tomomi SAKUMA, Takuju HASHIMOTO, Hideki NAKAI
  • Patent number: 11142073
    Abstract: An analytical device is provided. The analytical device includes a battery condition analysis section configured to detect a state change of a constituent member of a battery based on a change in peak of a relaxation time in a predetermined frequency band.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: October 12, 2021
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Shinichi Katayama, Hideki Nakai, Akinori Kita
  • Publication number: 20210167470
    Abstract: A secondary battery includes a wound electrode body. The wound electrode body includes a positive electrode, a negative electrode, and a separator. The positive electrode and the negative electrode are stacked on each other with the separator interposed therebetween and are wound about a winding axis. The wound electrode body has a section perpendicular to the winding axis. The section has an elongated shape that includes a flat part and a pair of curved parts. The curved parts oppose each other with the flat part interposed therebetween. The negative electrode includes a negative electrode current collector and a negative electrode active material layer provided on the negative electrode current collector. A width of the wound electrode body, a wound-layer number of the wound electrode body, and a ratio of a second distance to a first distance satisfy at least one of Condition A and Condition B.
    Type: Application
    Filed: February 9, 2021
    Publication date: June 3, 2021
    Inventors: Takaaki MATSUI, Kazuki HONDA, Rikako IMOTO, Hideki NAKAI, Takashi SATO
  • Publication number: 20210167413
    Abstract: A secondary battery includes a wound electrode body having a positive electrode, a negative electrode, and a separator. The positive electrode and the negative electrode are stacked on each other with the separator interposed therebetween and are wound about a winding axis. The wound electrode body has a section perpendicular to the winding axis. The section has an elongated shape that includes a flat part and a pair of curved parts. The curved parts oppose each other with the flat part interposed therebetween. The negative electrode includes a negative electrode current collector and a negative electrode active material layer provided on the negative electrode current collector. A ratio of a second distance to a first distance is less than 1.
    Type: Application
    Filed: February 9, 2021
    Publication date: June 3, 2021
    Inventors: Rikako IMOTO, Takaaki MATSUI, Hideki NAKAI
  • Publication number: 20200052343
    Abstract: A battery includes a wound electrode body with a substantially cylindrical shape, and an exterior material. The wound electrode body includes a positive electrode, a negative electrode, and a separator. The exterior material is configured to cover the wound electrode body. In at least one round from an outermost periphery of winding of the wound electrode body, one or more of a positive electrode, a negative electrode, a positive electrode current collector and a negative electrode current collector include at least one convex portion projecting in an outer peripheral direction.
    Type: Application
    Filed: October 17, 2019
    Publication date: February 13, 2020
    Inventors: Rikako IMOTO, Yoshiichi HORIKOSHI, Hideki NAKAI
  • Patent number: 10550000
    Abstract: A secondary battery includes: a cathode; an anode including a carbon material; and non-aqueous electrolytic solution. A photoelectron spectrum of oxygen 1s is obtained from an analysis of the anode by X-ray photoelectron spectroscopy. A first peak positioned in vicinity of 1360 reciprocal centimeters and a second peak positioned in vicinity of 1580 reciprocal centimeters are obtained from an analysis of the carbon material by Raman spectroscopy. A half band width ?W1 of the photoelectron spectrum is about 3 electron volts or more. A half band width ?W2 of the second peak is about 19 reciprocal centimeters or more. A ratio I1/I2 of intensity I1 of the first peak to intensity I2 of the second peak is from about 0.15 to about 0.3 both inclusive.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: February 4, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Toshio Nishi, Masayuki Ihara, Hideki Nakai, Akinori Kita
  • Patent number: 10403928
    Abstract: A secondary battery includes a cathode, an anode, and an electrolytic solution. The anode or the electrolytic solution, or both contain a metal salt including an unsaturated carbon bond.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: September 3, 2019
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Ichiro Yamada, Hideki Nakai, Toshio Nishi, Tadahiko Kubota
  • Patent number: 10312518
    Abstract: An anode and a secondary battery capable of improving the charge and discharge efficiency are provided. The anode includes an anode current collector, and an anode active material layer provided on the anode current collector. The anode active material layer has a plurality of anode active material particles containing at least one of a simple substance of silicon, a compound of silicon, a simple substance of tin and a compound of tin, and has a coat containing an oxo acid salt in at least part of the surface of the anode active material particles.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: June 4, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Hiroyuki Yamaguchi, Hideki Nakai, Masayuki Ihara, Tadahiko Kubota, Shigeru Fujita
  • Patent number: 10243200
    Abstract: A secondary battery having a cathode, an anode, and an electrolyte is provided. The cathode includes a cathode active material containing at least one kind selected from the group consisting of sulfur S and phosphorus P in a portion near the particle surface of a lithium composite oxide. A content of the kind in the portion is larger than that in the particle of the lithium composite oxide.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: March 26, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Masanori Soma, Atsumichi Kawashima, Masayuki Ihara, Hideki Nakai, Kenichi Kawase
  • Patent number: 10205163
    Abstract: A battery including an anode with an anode active material layer that includes anode active material particles made of an anode active material including at least one of silicon and tin as an element. An oxide-containing film including an oxide of at least one kind selected from the group consisting of silicon, germanium and tin is formed in a region of the surface of each anode active material particle in contact with an electrolytic solution by a liquid-phase method such as a liquid-phase deposition method. The region in contact with the electrolytic solution of the surface of each anode active material particle is covered with the oxide-containing film. The thickness of the oxide-containing film is preferably within a range from 0.1 nm to 500 nm both inclusive.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: February 12, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Hiroyuki Yamaguchi, Hiroshi Horiuchi, Kenichi Kawase, Tadahiko Kubota, Hideki Nakai, Takakazu Hirose
  • Publication number: 20190023131
    Abstract: An analytical device is provided. The analytical device includes a battery condition analysis section configured to detect a state change of a constituent member of a battery based on a change in peak of a relaxation time in a predetermined frequency band.
    Type: Application
    Filed: September 27, 2018
    Publication date: January 24, 2019
    Inventors: Shinichi KATAYAMA, Hideki NAKAI, Akinori KITA