Patents by Inventor Daisuke Yoshikawa

Daisuke Yoshikawa 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: 11966075
    Abstract: There is provided an optical member that can achieve a backlight unit excellent in brightness uniformity. The optical member includes: a light guide plate having an end surface that light from a light source enters, an emitting surface from which the entered light is emitted, and a light extraction pattern arranged on a surface opposite to the emitting surface; and a reflective plate bonded to the light guide plate via a double-sided pressure-sensitive adhesive film. An outer edge of the light guide plate is positioned outside an outer edge of the double-sided pressure-sensitive adhesive film, and the outer edge of the double-sided pressure-sensitive adhesive film is positioned outside an outer edge of the light extraction pattern.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: April 23, 2024
    Assignee: NITTO DENKO CORPORATION
    Inventors: Takahiro Yoshikawa, Daisuke Hattori, Ryota Morishima, Atsushi Kishi
  • Publication number: 20240108205
    Abstract: A catheter inserter for inserting a balloon catheter into an insertion opening of an endoscope provided with a valve. The balloon catheter includes a balloon attached on a distal end side of a shaft and configured to be expanded by an expansion fluid supplied from a proximal end side of the shaft, and an elastic band wound around an outer periphery of an intermediate portion of the balloon and configured to limit expansion of the balloon at the intermediate portion. The catheter inserter includes, on a distal end side thereof, a restrained member support structure configured to support a portion of an outer periphery of the elastic band. A proximal end support portion supporting a proximal end portion of the elastic band from a proximal end side is provided at a proximal end portion of the restrained member support structure.
    Type: Application
    Filed: August 8, 2023
    Publication date: April 4, 2024
    Inventors: Daisuke YOSHIKAWA, Yasuhiro OKAWA, Itsuki NAKAGAMI
  • Publication number: 20240097129
    Abstract: An active material particle according to an aspect of the present invention includes an active material base material and a covering layer covering at least a part of a surface of the active material base material, in which the covering layer contains niobium atoms and phosphorus atoms, and a content of the phosphorus atoms with respect to a total content of the niobium atoms and the phosphorus atoms in the covering layer is more than 0 mol % and 80 mol % or less.
    Type: Application
    Filed: January 24, 2022
    Publication date: March 21, 2024
    Inventors: Daisuke YOSHIKAWA, Motoshi SUYAMA
  • Publication number: 20240088357
    Abstract: An active material particle according to an aspect of the present invention contains an active material base material and a covering layer covering at least a part of a surface of the active material base material, the covering layer contains an oxide containing lithium atoms and titanium atoms, and a molar ratio of a content of the lithium atoms to the titanium atoms in the oxide is more than 1 and 4 or less.
    Type: Application
    Filed: January 24, 2022
    Publication date: March 14, 2024
    Inventors: Daisuke YOSHIKAWA, Motoshi SUYAMA
  • Publication number: 20240076413
    Abstract: An object of the present invention is to stably and efficiently provide an oxidized cellulose having excellent fibrillatability. The above object can be achieved by a method of producing an oxidized cellulose, which contains an oxide of a cellulose raw material by a hypochlorous acid or a salt thereof, is substantially free of N-oxyl compounds, and has a degree of polymerization of 600 or less, the method including a step of obtaining an oxidized cellulose by oxidizing a cellulose raw material using a hypochlorous acid or a salt thereof, wherein viscosity of a slurry of the cellulose raw material having the same concentration as when the oxidation is performed is in a range of 1,000 Pa·s or less at 30° C. or 40° C.
    Type: Application
    Filed: December 22, 2021
    Publication date: March 7, 2024
    Applicant: TOAGOSEI CO., LTD.
    Inventors: Shiroshi MATSUKI, Toshihiko TSUIKI, Hidenari KAYANO, Hayato YOSHIKAWA, Daisuke KAMIYA
  • Patent number: 11921311
    Abstract: Provided is a lighting apparatus having high light entrance efficiency with respect to a light guide plate, and being excellent in tint of light emitted from the light guide plate. The lighting apparatus of the present invention includes: an LED package; a light guide plate, which includes a main surface serving as a light emission surface, and a side surface serving as a light entrance surface, and which is arranged so that the side surface is opposed to the LED package; and a low-refractive index layer arranged between the LED package and the light guide plate.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: March 5, 2024
    Assignee: NITTO DENKO CORPORATION
    Inventors: Takahiro Yoshikawa, Daisuke Hattori, Ryota Morishima
  • Publication number: 20230326281
    Abstract: A valuable-medium monitoring system of the present disclosure includes terminal devices and a server, the terminal devices each including a controller that extracts information on a valuable medium and determines whether or not the valuable medium is a circulation-unsuitable medium based on the extracted information on the valuable medium; and a transmitter that, in response to a determination that the valuable medium is a circulation-unsuitable medium, transmits information on the circulation-unsuitable medium to the server, the server including: a memory that stores pieces of information on circulation-unsuitable media, the pieces of information being grouped into groups; and a transmitter that, in response to transmission of information on a circulation-unsuitable medium from one of the terminal devices, transmits a specific group of information on a circulation-unsuitable medium to which the circulation-unsuitable medium corresponds to any other terminal devices satisfying a predetermined condition.
    Type: Application
    Filed: June 15, 2023
    Publication date: October 12, 2023
    Applicant: Glory Ltd.
    Inventors: Toshimitsu KOZUKI, Ken MATSUHASHI, Daisuke YOSHIKAWA, Nobuo TSURUMA
  • Publication number: 20230201548
    Abstract: A balloon catheter includes a shaft inserted into a body; a balloon attached to the shaft on a distal end side and is expandable by an expansion fluid supplied from a side of a proximal end of the shaft; an elastic band wound around an outer periphery of an intermediate portion between a distal end portion and a proximal end portion of the balloon , and is configured to limit expansion of the balloon at the intermediate portion; and a covering member covering an outer periphery of the elastic band. The balloon is expandable to a maximum expansion diameter from a folded state, in accordance with pressure of the expansion fluid, the elastic band is expandable beyond the secured diameter, by being elastically deformed by the balloon expanding, and the covering member is expandable by being elastically deformed by the balloon or the elastic band expanding.
    Type: Application
    Filed: December 21, 2022
    Publication date: June 29, 2023
    Inventors: Ryo SEKI, Daisuke YOSHIKAWA, Yasuhiro OKAWA, Reo TAKEDA, Takuya MASUDA
  • Publication number: 20220416293
    Abstract: One aspect of the present invention is a solid electrolyte which has a crystal structure attributable to a space group F-43m and contains lithium, phosphorus, sulfur, and an element A, in which the element A is a metal element having an ionic radius of more than 59 pm and 120 pm or less in 4-fold coordination and 6-fold coordination in an ion crystal.
    Type: Application
    Filed: November 5, 2020
    Publication date: December 29, 2022
    Inventor: Daisuke YOSHIKAWA
  • Publication number: 20220293932
    Abstract: Provided is a positive active material for a nonaqueous electrolyte secondary battery which contains a lithium transition metal composite oxide, the lithium transition metal composite oxide having an ?-NaFeO2 structure, containing Ni, Co and Mn as a transition metal (Me), and having an X-ray diffraction pattern attributable to a space group R3-m, in which a ratio of the full width at half maximum of a diffraction peak of the (003) plane to the full width at half maximum of a diffraction peak of the (104) plane, (003)/(104) at a Miller index hkl in X-ray diffraction measurement using a CuK? ray is 0.810 to 0.865, and a crystallite size is 410 ? or more.
    Type: Application
    Filed: July 3, 2020
    Publication date: September 15, 2022
    Inventors: Daisuke YOSHIKAWA, Shinya OTANI
  • Patent number: 10398068
    Abstract: The present disclosure provides an electromagnetic shielding sheet characterized in that the sheet includes, electrically conductive carbon, a soft magnetic powder, and a base material made from a resin in which a filler including the conductive carbon and the soft magnetic powder has been mixed.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: August 27, 2019
    Assignee: Molex, LLC
    Inventors: Hideki Hozono, Mikiji Tanaka, Daisuke Yoshikawa, Kazumi Yamamoto
  • Patent number: 10044036
    Abstract: Provided is a positive active material for a lithium secondary battery containing a lithium transition metal composite oxide. The lithium transition metal composite oxide has an ?-NaFeO2 structure. A transition metal (Me) includes Co, Ni and Mn and a molar ratio Li/Me of lithium (Li) to the transition metal is larger than 1.2 and smaller than 1.6. The lithium transition metal composite oxide has a pore volume of 0.055 to 0.08 cc/g in a pore region in which a pore size, at which a differential pore volume determined by a BJH method from an adsorption isotherm using a nitrogen gas adsorption method exhibits a maximum value, is within a range up to 60 nm, and exhibits a single phase belonging to a space group R3-m at 1000° C.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: August 7, 2018
    Assignee: GS Yuasa International Ltd.
    Inventors: Daisuke Yoshikawa, Daisuke Endo
  • Publication number: 20180092260
    Abstract: The present disclosure provides an electromagnetic shielding sheet characterized in that the sheet includes, electrically conductive carbon, a soft magnetic powder, and a base material made from a resin in which a filler including the conductive carbon and the soft magnetic powder has been mixed.
    Type: Application
    Filed: September 26, 2017
    Publication date: March 29, 2018
    Applicant: Molex, LLC
    Inventors: Hideki HOZONO, Mikiji TANAKA, Daisuke YOSHIKAWA, Kazumi YAMAMOTO
  • Publication number: 20160301073
    Abstract: Provided is a positive active material for a lithium secondary battery containing a lithium transition metal composite oxide. The lithium transition metal composite oxide has an ?-NaFeO2 structure. A transition metal (Me) includes Co, Ni and Mn and a molar ratio Li/Me of lithium (Li) to the transition metal is larger than 1.2 and smaller than 1.6. The lithium transition metal composite oxide has a pore volume of 0.055 to 0.08 cc/g in a pore region in which a pore size, at which a differential pore volume determined by a BJH method from an adsorption isotherm using a nitrogen gas adsorption method exhibits a maximum value, is within a range up to 60 nm, and exhibits a single phase belonging to a space group R3-m at 1000° C.
    Type: Application
    Filed: November 17, 2014
    Publication date: October 13, 2016
    Inventors: Daisuke YOSHIKAWA, Daisuke ENDO
  • Publication number: 20110262809
    Abstract: Provided is a highly safe lithium-ion secondary battery with a gradual voltage decrease, high charge/discharge capacity, and ease of handling, in which explosion due to expansion, heat generation, ignition, and the like is prevented. A non-stoichiometric titanium compound represented by a chemical formula Li4+xTi5?xO12 (where 0<x<0.30), a non-stoichiometric titanium compound represented by a chemical formula Li4+xTi5?x?yNbyO12 (where 0<x<0.30, 0<y<0.20), and carbon-composite non-stoichiometric titanium compounds Li4+xTi5?xO12/C (where 0<x<0.30) and Li4+xTi5?x?yNbyO12/C (where 0<x<0.30, 0<y<0.20) obtained by applying a carbon composite-forming process thereto, an active material of negative electrode for a lithium-ion secondary battery using the compound, and a lithium-ion secondary battery using the active material of negative electrode.
    Type: Application
    Filed: June 25, 2009
    Publication date: October 27, 2011
    Applicant: INCORPORATED NATIONAL UNIVERSITY IWATE UNIVERSITY
    Inventors: Naoaki Kumagai, Yoshihiro Kadoma, Daisuke Yoshikawa