Patents by Inventor Motonari Kifune

Motonari Kifune 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: 20240097141
    Abstract: The present disclosure provides an electrode for a secondary battery capable of measuring the width of a first mixture layer and the width of a second mixture layer when the first mixture layer and the second mixture layer are stacked and formed on the surface of a metal foil. A positive electrode body (electrode for a secondary battery) includes a strip-like positive electrode foil and a positive electrode mixture layer provided on the positive electrode foil. The positive electrode mixture layer includes a first positive electrode mixture layer provided on the positive electrode foil and a second positive electrode mixture layer provided on the first positive electrode mixture layer. The first positive electrode mixture layer has a width greater than a width of the second positive electrode mixture layer.
    Type: Application
    Filed: November 24, 2020
    Publication date: March 21, 2024
    Applicant: Vehicle Energy Japan Inc.
    Inventor: Motonari KIFUNE
  • Patent number: 11296352
    Abstract: An object of the present invention is to obtain a secondary battery that allows grasping a position of a mixture layer on an electrode and facilitates adjustment of positions of a positive electrode and a negative electrode. A secondary battery (100) of the present invention includes a negative electrode (32) that includes a strip-shaped copper foil (45) having both surfaces, negative electrode mixture layers (32a) on both the surfaces, a negative electrode foil exposed portion (32b), and insulating layers (31). The negative electrode foil exposed portion (32b) where the copper foil (45) is exposed is formed in an end portion on one side in a width direction of the copper foil (45). The insulating layers (31) are disposed on the negative electrode mixture layers (32a) and on the negative electrode foil exposed portion (32b).
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: April 5, 2022
    Assignee: VEHICLE ENERGY JAPAN INC.
    Inventors: Motonari Kifune, Tetsuya Horinohchi, Kazuhide Uemura, Mutsumi Tsujide
  • Patent number: 11223038
    Abstract: An object of the present invention is to provide a method for manufacturing a secondary battery with enhanced insulating reliability without degrading the performance of an active material mixture layer formed on an electrode. The present invention provides a method for manufacturing a prismatic secondary battery (100) including a negative electrode (41) having a negative electrode current-collecting foil (411), a negative electrode mixture layer (412) formed thereon, and an insulating layer (413) formed on the negative electrode mixture layer (412). The method of the present invention includes a step of forming the negative electrode mixture layer (412) and the insulating layer (413) by concurrently applying an active material mixture slurry and an insulating layer dispersion liquid to the negative electrode current-collecting foil (411). Each ceramic particle (413a) has a plate shape with an aspect ratio greater than or equal to 2.0 and less than or equal to 5.0.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: January 11, 2022
    Assignee: VEHICLE ENERGY JAPAN INC.
    Inventors: Hiroyuki Toshiro, Motonari Kifune, Yasuo Arishima
  • Patent number: 11189861
    Abstract: Disclosed is a secondary battery obtained by rolling a cathode 31 and an anode 32 by interposing separators 33 and 34. The cathode 31 and the anode 32 have metal foils 31a and 32a, mixture layers 31b and 32b formed on the metal foils 31a and 32a, and foil exposure portion 31c and 32c that expose the metal foils 31a and 32a and are provided in one side in the width direction, respectively. The cathode 31 or the anode 32 has an insulation layer 35 that covers the mixture layers 31b and 32b, and a tip of a taper portion 32t of the mixture layer 32b, where the taper portion 32t is adjacent to the foil exposure portions 31c and 32c and has a thickness gradually reduced toward the foil exposure portions 31c and 32c, is exposed from the insulation layer 35.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: November 30, 2021
    Assignee: VEHICLE ENERGY JAPAN INC.
    Inventor: Motonari Kifune
  • Publication number: 20210194043
    Abstract: It is an object to provide a lithium ion secondary battery that ensures a replaceability of an electrolyte in a proximity of an active material and is excellent in output and responsiveness. The lithium ion secondary battery includes an electrode that includes a negative electrode foil, a negative electrode mixture layer disposed on a surface of the negative electrode foil, and an insulating layer disposed on a surface of the negative electrode mixture layer. The insulating layer contains ceramic particles. On the surface of the negative electrode mixture layer facing a border between the insulating layer and the negative electrode mixture layer, a plurality of holes (puddles) having diameters of 2.5 ?m or more are provided.
    Type: Application
    Filed: February 25, 2019
    Publication date: June 24, 2021
    Applicant: VEHICLE ENERGY JAPAN INC.
    Inventor: Motonari KIFUNE
  • Publication number: 20200220157
    Abstract: An object of the present invention is to provide a method for manufacturing a secondary battery with enhanced insulating reliability without degrading the performance of an active material mixture layer formed on an electrode. The present invention provides a method for manufacturing a prismatic secondary battery (100) including a negative electrode (41) having a negative electrode current-collecting foil (411), a negative electrode mixture layer (412) formed thereon, and an insulating layer (413) formed on the negative electrode mixture layer (412). The method of the present invention includes a step of forming the negative electrode mixture layer (412) and the insulating layer (413) by concurrently applying an active material mixture slurry and an insulating layer dispersion liquid to the negative electrode current-collecting foil (411). Each ceramic particle (413a) has a plate shape with an aspect ratio greater than or equal to 2.0 and less than or equal to 5.0.
    Type: Application
    Filed: March 8, 2018
    Publication date: July 9, 2020
    Applicant: VEHICLE ENERGY JAPAN INC.
    Inventors: Hiroyuki TOSHIRO, Motonari KIFUNE, Yasuo ARISHIMA
  • Publication number: 20200144657
    Abstract: An object of the present invention is to obtain a secondary battery that allows grasping a position of a mixture layer on an electrode and facilitates adjustment of positions of a positive electrode and a negative electrode. A secondary battery (100) of the present invention includes a negative electrode (32) that includes a strip-shaped copper foil (45) having both surfaces, negative electrode mixture layers (32a) on both the surfaces, a negative electrode foil exposed portion (32b), and insulating layers (31). The negative electrode foil exposed portion (32b) where the copper foil (45) is exposed is formed in an end portion on one side in a width direction of the copper foil (45). The insulating layers (31) are disposed on the negative electrode mixture layers (32a) and on the negative electrode foil exposed portion (32b).
    Type: Application
    Filed: March 16, 2018
    Publication date: May 7, 2020
    Applicant: VEHICLE ENERGY JAPAN INC.
    Inventors: Motonari KIFUNE, Tetsuya HORINOHCHI, Kazuhide UEMURA, Mutsumi TSUJIDE
  • Publication number: 20190221852
    Abstract: When a short circuit occurs in a lithium-ion secondary battery, a short circuit current is reduced to suppress temperature rise of the battery. In order to solve the above problem, a lithium-ion battery of the present invention includes an electrode having a mixture layer and a heat resistant layer disposed on the mixture layer and containing ceramic particles. The heat resistant layer includes a crosslinked resin, and the amount of the crosslinked resin is less than 10% by weight with respect to the sum of the amount of the ceramic particles and the amount of the crosslinked resin.
    Type: Application
    Filed: August 4, 2017
    Publication date: July 18, 2019
    Inventors: Katsunori NISHIMURA, Shuichi SUZUKI, Osamu KUBOTA, Kunio FUKUCHI, Motonari KIFUNE, Takuro TSUNAKI
  • Publication number: 20180351211
    Abstract: Disclosed is a secondary battery obtained by rolling a cathode 31 and an anode 32 by interposing separators 33 and 34. The cathode 31 and the anode 32 have metal foils 31a and 32a, mixture layers 31b and 32b formed on the metal foils 31a and 32a, and foil exposure portion 31c and 32c that expose the metal foils 31a and 32a and are provided in one side in the width direction, respectively. The cathode 31 or the anode 32 has an insulation layer 35 that covers the mixture layers 31b and 32b, and a tip of a taper portion 32t of the mixture layer 32b, where the taper portion 32t is adjacent to the foil exposure portions 31c and 32c and has a thickness gradually reduced toward the foil exposure portions 31c and 32c, is exposed from the insulation layer 35.
    Type: Application
    Filed: January 18, 2017
    Publication date: December 6, 2018
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventor: Motonari KIFUNE
  • Publication number: 20150034862
    Abstract: To obtain a process for producing a positive electrode mix capable of producing, in a short time, a positive electrode mix in a stable slurry state containing a high nickel lithium composite oxide with less variation of viscosity change with time. A lithium composite oxide at high nickel content is kneaded with at least one of a conduction aid and a binder resin in a gaseous carbon dioxide atmosphere in a kneading step. Thus, a treatment of oxidizing lithium hydroxide in the lithium composite oxide is proceeded efficiently and a positive electrode mix in a stable slurry state with less variation of viscosity change with time is produced in a short time.
    Type: Application
    Filed: January 11, 2013
    Publication date: February 5, 2015
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventor: Motonari Kifune
  • Patent number: 8231422
    Abstract: A plasma display panel includes a substrate, a plurality of metal electrodes, and a dielectric layer. The plurality of metal electrodes are formed on the substrate in a predetermined direction. The dielectric layer is formed on the metal electrodes by firing a glass material. The metal electrodes are formed with a film thickness of 6 ?m or less. The dielectric layer is formed with a film thickness of 25 ?m or less.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: July 31, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Motonari Kifune, Masashi Nishiki, Akira Shimoyoshi
  • Publication number: 20090155457
    Abstract: A die coater of the present invention includes: a replaceable-type paste container containing a paste inside thereof and including, in its upper surface, a paste ejection port for ejecting the paste; a buffer tank for storing the paste ejected from the paste ejection port; and a coat-layer formation portion for discharging the paste ejected from the buffer tank onto a substrate through a head to form a coat layer, wherein the paste container is placed such that the upper surface thereof is oriented more downwardly than a vertical plane, in order to cause the paste to be ejected from the paste ejection port due to its weight.
    Type: Application
    Filed: August 22, 2008
    Publication date: June 18, 2009
    Inventors: Daisuke IKEDA, Akira Shimoyoshi, Motonari Kifune, Hideaki Hirabara
  • Patent number: 7473151
    Abstract: A method of manufacturing a substrate for a flat panel display includes forming grooves in a bottom surface of a float glass substrate by a subtractive process to form barrier ribs. The barrier ribs include the protrusions remaining between the respective grooves.
    Type: Grant
    Filed: May 15, 2003
    Date of Patent: January 6, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Osamu Toyoda, Motonari Kifune, Mituji Yamamoto, Kazunori Inoue
  • Publication number: 20080096362
    Abstract: A plasma display panel includes a sealing member that encloses a gas filled space, a first substrate and a second substrate that sandwich the gas filled space and the sealing member, a first insulator layer that is sandwiched between the first substrate and the sealing member, and a second insulator layer that is sandwiched between the second substrate and the sealing member. Materials and thicknesses of the first insulator layer and the second insulator layer are selected so that etching time of the two insulator layers until etching depth reaches the thicknesses of the insulator layers are the same time period under conditions that one side of each of the insulator layers in the thickness direction is exposed to etchant and that the same etching method is used for the insulator layers.
    Type: Application
    Filed: April 4, 2007
    Publication date: April 24, 2008
    Applicant: FUJITSU HITACHI PLASMA DISPLAY LIMITED
    Inventors: Hideaki Hirabara, Akira Shimoyoshi, Motonari Kifune
  • Publication number: 20070262716
    Abstract: A plasma display panel includes a substrate, a plurality of metal electrodes, and a dielectric layer. The plurality of metal electrodes are formed on the substrate in a predetermined direction. The dielectric layer is formed on the metal electrodes by firing a glass material. The metal electrodes are formed with a film thickness of 6 ?m or less. The dielectric layer is formed with a film thickness of 25 ?m or less.
    Type: Application
    Filed: March 6, 2007
    Publication date: November 15, 2007
    Applicant: Fujitsu Hitachi Plasma Display Limited
    Inventors: Motonari Kifune, Masashi Nishiki, Akira Shimoyoshi
  • Patent number: 7192334
    Abstract: A method for making a light-emitting display device having a substrate with light-emitting layers on a surface of the substrate and constituting pixels, light emission from the pixels being electrically controlled, and having barriers delimiting at least one side of each respective pixel. A mask pattern is formed on a surface of the substrate, corresponding to the pattern of the barriers to be formed, and the surface is sprayed with sandblasting particles to form grooves having a depth corresponding to a height of the barriers and irregularities producing light scattering on the side walls and bottoms of the grooves, a difference between a maximum height and a minimum height of the irregularities being at least 0.4 mm.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: March 20, 2007
    Assignee: Fuji Photo Film Co., Ltf.
    Inventors: Yasunobu Hashimoto, Yoshiho Seo, Naoki Itokawa, Motonari Kifune, Yasushi Ohkawa
  • Patent number: 7118441
    Abstract: A method for manufacturing a PDP includes the steps of carrying a PDP under manufacture into an apparatus having a plurality of firing zones, and performing a firing step and/or a drying step under circulating hot air supplied in the respective firing zones. Organic components generated in the firing step and/or the drying step are oxidatively decomposed in a path for circulating the hot air.
    Type: Grant
    Filed: August 10, 2004
    Date of Patent: October 10, 2006
    Assignee: Fujitsu Hitachi Plasma Display Limited
    Inventors: Motonari Kifune, Hideki Okano
  • Publication number: 20060009133
    Abstract: A method for making a light-emitting display device having a substrate with light-emitting layers on a surface of the substrate and constituting pixels, light emission from the pixels being electrically controlled, and having barriers delimiting at least one side of each respective pixel. A mask pattern is formed on a surface of the substrate, corresponding to the pattern of the barriers to be formed, and the surface is sprayed with sandblasting particles to form grooves having a depth corresponding to a height of the barriers and irregularities producing light scattering on the side walls and bottoms of the grooves, a difference between a maximum height and a minimum height of the irregularities being at least 0.4 mm.
    Type: Application
    Filed: September 16, 2005
    Publication date: January 12, 2006
    Applicant: FUJITSU LTD
    Inventors: Yasunobu Hashimoto, Yoshiho Seo, Naoki Itokawa, Motonari Kifune, Yasushi Ohkawa
  • Patent number: 6954031
    Abstract: A light-emitting display device includes a substrate and light-emitting layers constituting pixels on a surface of the substrate in which light emission is electrically controlled for every pixel. The light-emitting display device further includes barriers delimiting at least one side of each pixel. On the surface of the substrate, at least part of a region that corresponds to each pixel has irregularities for light scattering. The difference between the maximum height and the minimum height of the irregularities is at least 0.4 ?m. The barriers and the irregularities are formed by sandblasting the surface of the substrate. The irregularities reduce attenuation of light by total reflection in the interior of the substrate and improve brightness of the device.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: October 11, 2005
    Assignee: Fujitsu Limited
    Inventors: Yasunobu Hashimoto, Yoshiho Seo, Naoki Itokawa, Motonari Kifune, Yasushi Ohkawa
  • Patent number: 6870314
    Abstract: A panel assembly for a PDP having ribs of partitioning a discharge space on a substrate includes grooves each formed between adjacent ribs. Each of the grooves has deeper groove regions to be luminous areas and shallower groove regions to be non-luminous areas. Black material layers are formed on the shallower groove regions.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: March 22, 2005
    Assignee: Fujitsu Limited
    Inventors: Motonari Kifune, Osamu Toyoda