Patents by Inventor Kazuhiro Yoshii

Kazuhiro Yoshii 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: 20220181606
    Abstract: This secondary battery comprises an electrode body that includes a positive electrode, a negative electrode, and a separator. The positive electrode has a positive electrode core, and a positive electrode mixture layer provided on the surface of the positive electrode core. The positive electrode mixture layer includes a positive electrode active material configured by secondary particles in which primary particles are aggregated. The packing density of the positive electrode active material in the positive electrode mixture layer is 3.2 g/cm3 or greater, and the crush rate of 30 pieces of the positive electrode active material existing on the surface of the positive electrode is 75% or less.
    Type: Application
    Filed: January 27, 2020
    Publication date: June 9, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Kazuhiro Yoshii, Takahiro Takahashi
  • Publication number: 20220166004
    Abstract: This secondary battery comprises: a positive electrode including a positive electrode core and a positive electrode mixture layer provided on the surface of the positive electrode core; and a negative electrode including a negative electrode core and a negative electrode mixture layer provided on the surface of the negative electrode core. At least one among the positive electrode mixture layer and the negative electrode mixture layer has a layer thickness variation coefficient of 0.01-0.30 or a layer surface tortuosity of 1.2-2.0.
    Type: Application
    Filed: January 21, 2020
    Publication date: May 26, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takahiro Takahashi, Kazuhiro Yoshii
  • Publication number: 20220149496
    Abstract: This secondary battery is characterized by being provided with: a positive electrode; and a positive electrode lead that is connected to the positive electrode, wherein the positive electrode has a positive electrode collector and a positive electrode active material layer formed in at least one surface of the positive electrode collector, at least one of the surfaces of the positive electrode has a laminated part in which the positive electrode active material layer is formed, and an exposed part in which the positive electrode collector is exposed, and the positive electrode lead has an one-end part connected to the exposed part and an extended part which extends from the one-end part to the outside of the positive electrode. The secondary battery is further provided with an insulating member that has a base material part, a heat resistant and an adhesive part.
    Type: Application
    Filed: December 18, 2019
    Publication date: May 12, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Kazuhiro Yoshii, Satoru Tachibana
  • Publication number: 20220013875
    Abstract: A battery includes a positive electrode, a negative electrode, a positive electrode lead which is connected to the positive electrode, and a protective tape which covers the positive electrode lead. The protective tape includes a base material layer and an adhesive layer that is arranged on the base material layer; and the adhesive layer contains an adhesive material and a filler which contains at least one compound that is selected from among phosphoric acid group-containing compounds, boric acid group-containing compounds and silicic acid group-containing compounds.
    Type: Application
    Filed: October 4, 2019
    Publication date: January 13, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tomoki Shiozaki, Kazuhiro Yoshii, Hajime Nishino
  • Publication number: 20210249642
    Abstract: A non-aqueous electrolyte secondary battery according to one aspect of the present application comprises: a positive electrode; a negative electrode; a heat-resistant layer that is formed on at least one of the positive electrode and the negative electrode; and a non-aqueous electrolyte, wherein the heat-resistant layer includes heat-resistant particles, at least the surface of said heat-resistant particles comprising a metal compound, the average thickness of the heat-resistant layer is within the range 0.5 ?m-5 ?m, the porosity of the heat-resistant layer is 25%-55%, the average surface roughness (Ra) of the heat-resistant layer is 0.35 ?m or less, and the electronegativity of metal ions of the metal compound is 13.5 or greater.
    Type: Application
    Filed: February 22, 2019
    Publication date: August 12, 2021
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Kazuhiro Yoshii
  • Publication number: 20210198529
    Abstract: A pressure sensitive adhesive sheet for batteries, which includes a base material and a pressure sensitive adhesive layer provided on one surface side of the base material. The pressure sensitive adhesive layer contains inorganic fine particles having a water content of 0.4% or less in a single body.
    Type: Application
    Filed: December 22, 2020
    Publication date: July 1, 2021
    Applicants: LINTEC CORPORATION, Panasonic Corporation
    Inventors: Takeshi ANSAI, Yuichi KURATA, Hajime NISHINO, Tomoki SHIOZAKI, Kazuhiro YOSHII
  • Publication number: 20200373582
    Abstract: A nonaqueous electrolyte secondary battery with a positive electrode having a positive electrode current collector and a positive electrode active material layer that is supported by a first main surface and a second main surface. The first main surface includes a first exposed section on which the positive electrode active material layer is not arranged. A positive electrode lead is connected to the first exposed section and includes an extension section and an overlapping section. At least a portion of the first exposed section, along with at least a portion of the overlapping section, is covered with a positive electrode insulating tape which has a base, a first layer that adheres to the first exposed section and to the overlapping section, and a second layer interposed between the base and the first layer; and the second layer expands when heated above a threshold.
    Type: Application
    Filed: July 5, 2018
    Publication date: November 26, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hajime Nishino, Satoko Motomatsu, Kazuhiro Yoshii, Takao Sato, Tomoki Shiozaki
  • Publication number: 20200280071
    Abstract: A secondary battery according to one embodiment of the present disclosure comprises a positive electrode, a negative electrode, a positive electrode lead that is electrically connected to the positive electrode, and an insulating tape that covers a part of the positive electrode lead. The positive electrode lead has: one end part which is connected to an exposed part of a positive electrode collector that constitutes the positive electrode; and an extension part which extends outwardly from the one end part beyond the periphery of the positive electrode collector. An insulating layer is arranged on the outer surface of the one end part of the positive electrode lead; and the insulating layer is covered by the insulating tape.
    Type: Application
    Filed: May 20, 2020
    Publication date: September 3, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Kazuhiro Yoshii
  • Publication number: 20200168886
    Abstract: A secondary battery includes an electrode body formed by layering a positive electrode and a negative electrode with a separator therebetween, an electrolyte, and insulating tape adhered to at least one of the positive electrode and the negative electrode. The insulating tape includes a base layer formed of an insulating organic material, an adhesive layer, and a porous layer that is interposed between the base layer and the adhesive layer and that has a pore that an electrolytic solution is allowed to enter.
    Type: Application
    Filed: June 28, 2018
    Publication date: May 28, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takao Sato, Kazuhiro Yoshii
  • Patent number: 10636558
    Abstract: A ceramic core includes an axial core part extended in the longitudinal direction, and a pair of flanges located at both ends in the longitudinal direction of the axial core part and projecting around the periphery of the axial core part in the height and width directions. The ceramic core has a length dimension L in the longitudinal direction of about 0 mm<L?1.1 mm. A ratio t/T of the thickness dimension t in the height direction of the axial core part to the height dimension T in the height dimension of the flanges, is about 0<t/T?0.6. A ratio w/W of the width dimension w in the width direction of the axial core part to the width dimension W in the width direction of the flanges, is about 0<w/W?0.6.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: April 28, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takeshi Uchida, Akira Kurakake, Kazuyoshi Ishizuka, Kazuhiro Yoshii
  • Publication number: 20190333661
    Abstract: A sintered magnet contains Sm—Fe—N-based crystal grains and has high coercivity; and a magnetic powder is capable of forming a sintered magnet without lowering the coercivity even if heat is generated in association with the sintering. A sintered magnet comprises a crystal phase composed of a plurality of Sm—Fe—N-based crystal grains and a nonmagnetic metal phase present between the Sm—Fe—N crystal grains adjacent to each other, wherein a ratio of Fe peak intensity IFe to SmFeN peak intensity ISmFeN measured by an X-ray diffraction method is 0.2 or less. A magnetic powder comprises Sm—Fe—N-based crystal particles and a nonmagnetic metal layer covering surfaces of the Sm—Fe—N crystal particles.
    Type: Application
    Filed: July 8, 2019
    Publication date: October 31, 2019
    Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, Murata Manufacturing Co., Ltd.
    Inventors: Kenta TAKAGI, Wataru YAMAGUCHI, Takaaki YOKOYAMA, Kenji SAKAGUCHI, Kazuhiro YOSHII, Yuji YOKOYAMA
  • Patent number: 10340530
    Abstract: An alkaline dry cell includes a bottomed cylindrical cell case, a positive electrode packed in the cell case and is made of a stack of n pieces of hollow cylindrical pellets, a negative electrode disposed in a hollow portion of the pellets, a separator interposed between the positive electrode and the negative electrode, and an alkaline electrolytic solution. A thickness of a body portion of the cell case is 0.08 to 0.16 mm. “n” is an integer of 3 or more. An average density dm of manganese dioxide in the n pellets is 2.80 to 3.00 g/cm3. A density of manganese dioxide of at least one pellet positioned in a middle portion in a height direction of the stack is 2.75 g/cm3 or less.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: July 2, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Kazuhiro Yoshii
  • Patent number: 10174860
    Abstract: An electromagnetic valve for a transmission-use oil pressure control device including an oil pump that supplies oil pressure to a transmission, and an accumulator that accumulates an oil pressure generated by the oil pump. The electromagnetic valve includes: an electromagnetic valve main body connected to the accumulator and includes an oil path opening/closing valve element opening/closing an oil path between the accumulator and the transmission; a seal member disposed in the electromagnetic valve main body sealing against oil leakage from a sliding portion of the oil path opening/closing valve element in the opening/closing operation of the oil path opening/closing valve element; and a pressure regulation mechanism disposed in the electromagnetic valve main body regulating to release an internal pressure in the accumulator when an accumulator-side oil pressure in the electromagnetic valve main body rises to a predetermined pressure or more.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: January 8, 2019
    Assignees: AISIN AW CO., LTD., NACHI FUJIKOSHI CORP.
    Inventors: Yukihiro Noda, Shuichi Takeda, Katsutoshi Komatsu, Hiroyuki Kutsubo, Masamichi Yamaguchi, Masayuki Hara, Syunji Miyanishi, Kazuhiro Yoshii, Makoto Miyatake
  • Publication number: 20180254493
    Abstract: An alkaline dry cell includes a bottomed cylindrical cell case, a positive electrode packed in the cell case and is made of a stack of n pieces of hollow cylindrical pellets, a negative electrode disposed in a hollow portion of the pellets, a separator interposed between the positive electrode and the negative electrode, and an alkaline electrolytic solution. A thickness of a body portion of the cell case is 0.08 to 0.16 mm. “n” is an integer of 3 or more. An average density dm of manganese dioxide in the n pellets is 2.80 to 3.00 g/cm3. A density of manganese dioxide of at least one pellet positioned in a middle portion in a height direction of the stack is 2.75 g/cm3 or less.
    Type: Application
    Filed: October 11, 2016
    Publication date: September 6, 2018
    Inventor: KAZUHIRO YOSHII
  • Publication number: 20180058604
    Abstract: An electromagnetic valve for a transmission-use oil pressure control device including an oil pump that supplies oil pressure to a transmission, and an accumulator that accumulates an oil pressure generated by the oil pump. The electromagnetic valve includes: an electromagnetic valve main body connected to the accumulator and includes an oil path opening/closing valve element opening/closing an oil path between the accumulator and the transmission; a seal member disposed in the electromagnetic valve main body sealing against oil leakage from a sliding portion of the oil path opening/closing valve element in the opening/closing operation of the oil path opening/closing valve element; and a pressure regulation mechanism disposed in the electromagnetic valve main body regulating to release an internal pressure in the accumulator when an accumulator-side oil pressure in the electromagnetic valve main body rises to a predetermined pressure or more.
    Type: Application
    Filed: March 4, 2016
    Publication date: March 1, 2018
    Applicants: AISIN AW CO., LTD., NACHI FUJIKOSHI CORP.
    Inventors: Yukihiro NODA, Shuichi TAKEDA, Katsutoshi KOMATSU, Hiroyuki KUTSUBO, Masamichi YAMAGUCHI, Masayuki HARA, Syunji MIYANISHI, Kazuhiro YOSHII, Makoto MIYATAKE
  • Publication number: 20170330676
    Abstract: A ceramic core includes an axial core part extended in the longitudinal direction, and a pair of flanges located at both ends in the longitudinal direction of the axial core part and projecting around the periphery of the axial core part in the height and width directions. The ceramic core has a length dimension L in the longitudinal direction of about 0 mm<L?1.1 mm. A ratio t/T of the thickness dimension t in the height direction of the axial core part to the height dimension T in the height dimension of the flanges, is about 0<t/T?0.6. A ratio w/W of the width dimension w in the width direction of the axial core part to the width dimension W in the width direction of the flanges, is about 0<w/W?0.6.
    Type: Application
    Filed: May 1, 2017
    Publication date: November 16, 2017
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Takeshi UCHIDA, Akira KURAKAKE, Kazuyoshi ISHIZUKA, Kazuhiro YOSHII
  • Publication number: 20120329590
    Abstract: In a hydraulic tensioner, the seating surface of a ball-type check valve, used to allow oil to enter the oil chamber of the tensioner while blocking reverse flow of oil, is formed with one or more grooves that allow leakage of oil from the oil chamber to an oil supply passage even when the ball is seated. The groove or grooves can have a decreasing depth or decreasing width, proceeding from the opening of the oil passage of the ball seat toward the oil chamber. Plural grooves can be provided at equal circumferential intervals, and the grooves can be circumferentially inclined. In each case, the groove or grooves improve separation of the ball from the seat, and thereby improve responsiveness of the tensioner to variations in chain tension.
    Type: Application
    Filed: June 19, 2012
    Publication date: December 27, 2012
    Applicant: TSUBAKIMOTO CHAIN CO.
    Inventors: Kazuhiro Yoshii, Osamu Yoshida
  • Patent number: 7866965
    Abstract: A gear pump has a pump housing formed with a gear receiving recess, a pump cover coupled with the pump housing to cover the gear receiving recess, a hydraulic passage that uses the gear receiving recess as a passage part thereof, and annular inner and outer gears operatively installed in the gear receiving recess. The inner and outer gears are of a bevel type and meshed with each other in such a manner as to bias the inner gear in a direction to reduce the thickness of the passage part when the inner gear is rotated while turning the outer gear therearound.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: January 11, 2011
    Assignee: JATCO Ltd
    Inventors: Kazuhiro Yoshii, Daisuke Kikukawa
  • Publication number: 20070248482
    Abstract: An internal gear pump comprises a pump housing formed with a gear receiving recess, a pump cover coupled with the pump housing to cover the gear receiving recess, a hydraulic passage that uses the gear receiving recess as a passage part thereof, and annular inner and outer gears operatively installed in the gear receiving recess. The inner and outer gears are of a bevel type and meshed with each other in such a manner as to bias the inner gear in a direction to reduce the thickness of the passage part when the inner gear is rotated while turning the outer gear therearound.
    Type: Application
    Filed: April 6, 2007
    Publication date: October 25, 2007
    Inventors: Kazuhiro Yoshii, Daisuke Kikukawa
  • Patent number: 6478496
    Abstract: An ink follower for a writing tool arranged in close contact with an ink surface of a terminal portion of an ink reservoir opposite to a writing tip portion comprises a swollen gel formed from an oil-absorbable resin, a base oil of polybutene, and an alkyl-modified silicone oil compatible with the polybutene. The ink follower exhibits improved impact resistance without causing insufficient ink following and oil separation.
    Type: Grant
    Filed: February 6, 2002
    Date of Patent: November 12, 2002
    Assignee: Kabushiki Kaisha Pilot
    Inventors: Kazuhiro Yoshii, Seishi Izumi, Teruaki Fukasawa