Patents by Inventor Kazunori Kubota

Kazunori Kubota 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: 20240099038
    Abstract: A display apparatus having a photoelectric conversion function with high sensitivity is provided. The light extraction efficiency of the display apparatus is increased. The display apparatus includes a light-emitting device, a light-emitting and light-receiving device, a first lens, and a second lens. The light-emitting device has a function of emitting light of a first color. The light-emitting and light-receiving device has a function of emitting light of a second color and a function of receiving light of the first color and converting it into an electric signal. The light emitted by the light-emitting device is emitted to the outside of the display apparatus through the first lens. Light enters the light-emitting and light-receiving device from the outside of the display apparatus through the second lens.
    Type: Application
    Filed: October 5, 2020
    Publication date: March 21, 2024
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Daisuke Kubota, Taisuke KAMADA, Ryo HATSUMI, Koji KUSUNOKI, Kazunori WATANABE, Susumu KAWASHIMA
  • Patent number: 9929412
    Abstract: A manufacturing method of a supported platinum catalyst, includes: generating a platinum group salt solution using platinum group salts and a complexing agent; mixing the platinum group salt solution and a carbon powder dispersion in which carbon powder is dispersed; and adding a reducing agent to a mixed solution of the platinum group salt solution and the carbon powder dispersion, and reducing the platinum group salts to allow the platinum group particles to be supported on the carbon powder.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: March 27, 2018
    Assignee: Panasonic Corporation
    Inventors: Yasuhiro Ueyama, Toshiyuki Kojima, Yasushi Taniguchi, Kazunori Kubota, Hideyuki Takahashi, Shun Yokoyama, Kazuyuki Tohji, Shuzo Tsuchida
  • Publication number: 20160372759
    Abstract: A manufacturing method of a supported platinum catalyst, includes: generating a platinum group salt solution using platinum group salts and a complexing agent; mixing the platinum group salt solution and a carbon powder dispersion in which carbon powder is dispersed; and adding a reducing agent to a mixed solution of the platinum group salt solution and the carbon powder dispersion, and reducing the platinum group salts to allow the platinum group particles to be supported on the carbon powder.
    Type: Application
    Filed: April 29, 2016
    Publication date: December 22, 2016
    Inventors: YASUHIRO UEYAMA, TOSHIYUKI KOJIMA, YASUSHI TANIGUCHI, KAZUNORI KUBOTA, HIDEYUKI TAKAHASHI, SHUN YOKOYAMA, KAZUYUKI TOHJI, SHUZO TSUCHIDA
  • Patent number: 9419301
    Abstract: An electrolyte membrane for solid polymer fuel cell includes a reinforce membrane made of nonwoven fibers and an electrolyte provided in a space among the nonwoven fibers. The nonwoven fibers have a non-uniform mass distribution in a plane of the electrolyte membrane. A mass of the nonwoven fibers per unit area in a region corresponding to at least part of a peripheral portion of a fuel cell-use gasket frame is greater than a mass of the nonwoven fibers per unit area in a region corresponding to a center portion of the gasket frame. The electrolyte membrane for solid polymer fuel cell is attached to the fuel cell-use gasket frame.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: August 16, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masahiro Mori, Shinya Kikuzumi, Tsutomu Kawashima, Yasuhiro Ueyama, Kazunori Kubota
  • Patent number: 8745874
    Abstract: A method of manufacturing a wheel support bearing assembly having a plastically deformed portion engageable with an inclined surface portion of an annular stepped area in the inner race segment. The method includes that the plastically deformed portion, which is of a cylindrical configuration before it is deformed, is formed by pressing a crimping punch, of which front end portion outer peripheral surface is a tapered shape, axially into an inner peripheral surface of the inboard end portion of the hub axle to allow the cylindrical plastically deformed portion to be crimped in the diameter expanded condition.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: June 10, 2014
    Assignee: NTN Corporation
    Inventors: Kazunori Kubota, Kazuo Komori, Hiroshi Matsunaga, Akira Fujimura, Tetsuya Hashimoto, Masahiro Kiuchi
  • Publication number: 20130273455
    Abstract: An electrolyte membrane for solid polymer fuel cell includes a reinforce membrane made of nonwoven fibers and an electrolyte provided in a space among the nonwoven fibers. The nonwoven fibers have a non-uniform mass distribution in a plane of the electrolyte membrane. A mass of the nonwoven fibers per unit area in a region corresponding to at least part of a peripheral portion of a fuel cell-use gasket frame is greater than a mass of the nonwoven fibers per unit area in a region corresponding to a center portion of the gasket frame. The electrolyte membrane for solid polymer fuel cell is attached to the fuel cell-use gasket frame.
    Type: Application
    Filed: November 14, 2011
    Publication date: October 17, 2013
    Inventors: Masahiro Mori, Shinya Kikuzumi, Tsutomu Kawashima, Yasuhiro Ueyama, Kazunori Kubota
  • Patent number: 8293405
    Abstract: The present invention relates to a rechargeable lithium ion battery having an electrode plate with a high active material density and high electrolyte permeability. Upon producing the rechargeable lithium ion battery, hollow resin particles that can be collapsed by rolling are incorporated in a positive electrode mixture layer or a negative electrode mixture layer before the electrode mixture layer is rolled. The hollow resin particles are collapsed in the course of rolling the positive electrode mixture layer or the negative electrode mixture layer, so that the active material density can be easily increased. Further, the collapsed resin particles form unevenness on the surface of the electrode plate and also form open pores in the electrode plate, so that electrolyte permeability can be enhanced. As a result, the discharge capacity and rate characteristics of rechargeable lithium ion batteries can be increased.
    Type: Grant
    Filed: May 19, 2008
    Date of Patent: October 23, 2012
    Assignee: Panasonic Corporation
    Inventors: Kazunori Kubota, Yasuhiro Ueyama
  • Publication number: 20120216407
    Abstract: A method of manufacturing a wheel support bearing assembly having a plastically deformed portion engageable with an inclined surface portion of an annular stepped area in the inner race segment. The method includes that the plastically deformed portion, which is of a cylindrical configuration before it is deformed, is formed by pressing a crimping punch, of which front end portion outer peripheral surface is a tapered shape, axially into an inner peripheral surface of the inboard end portion of the hub axle to allow the cylindrical plastically deformed portion to be crimped in the diameter expanded condition.
    Type: Application
    Filed: May 9, 2012
    Publication date: August 30, 2012
    Applicant: NTN Corporation
    Inventors: Kazunori KUBOTA, Kazuo Komori, Hiroshi Matsunaga, Akira Fujimura, Tetsuya Hashimoto, Masahiro Kiuchi
  • Patent number: 8221004
    Abstract: A support bearing assembly includes a plural rows of rolling elements between opposed raceway surfaces of outer and inner members, respectively. The inner member is formed from a hub unit and an inner ring mounted on an outer periphery of an inboard end portion thereof. An annular stepped area is provided in an inner periphery of the inboard side of the inner ring. A crimped portion engageable with the stepped area is provided on an inboard end of the hub unit and has a cylindrical shape prior to a crimping process. By setting the amount of change in an inner diameter of the inboard end of the crimped portion within a preset range when a crimping punch is driven in, the amount of radially outward augmentation of the crimped portion is regulated.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: July 17, 2012
    Assignee: NTN Corporation
    Inventors: Akira Fujimura, Kazuo Komori, Kazunori Kubota, Tetsuya Hashimoto, Keiji Saitou
  • Patent number: 8142081
    Abstract: A wheel support bearing assembly includes an outer member, an inner member and double row balls. The inner member includes a hub unit, which has a wheel mounting flange defined in an outer periphery thereof, and an inner ring mounted on the outer periphery of the inboard end of the hub unit. A shoulder is provided in an inner peripheral edge of the inboard end face of the inner ring. A crimped portion, engageable with a stepped face of the shoulder, is provided in the inboard end of the hub unit by diameter expansion. The crimped portion is formed by crimping such diameter expanded portion which is thin walled by providing a hub inner diameter setback in the inner periphery of the inboard end of the hub unit. This thin walled portion is positioned on a side inboardly of the straight line defining a ball contact angle in the inboard raceway surface.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: March 27, 2012
    Assignee: NTN Corporation
    Inventors: Akira Fujimura, Kazuo Komori, Kazunori Kubota, Tetsuya Hashimoto
  • Publication number: 20110136010
    Abstract: A nonaqueous electrolyte secondary battery includes: a positive electrode 4 including a positive electrode current collector and a positive electrode material mixture layer containing a positive electrode active material and a binder and provided on the positive electrode current collector; a negative electrode 5; a porous insulating layer 6 interposed between the positive electrode 4 and the negative electrode 5; and a nonaqueous electrolyte. The positive electrode 4 has a tensile extension percentage of 3.0% or more. The binder is made of copolymer containing vinylidene fluoride and hexafluoropropylene.
    Type: Application
    Filed: July 15, 2009
    Publication date: June 9, 2011
    Inventors: Yoshiyuki Muraoka, Miho Tanaka, Kazunori Kubota
  • Publication number: 20110086785
    Abstract: The present invention provides a grease composition for automobile wheel bearings, which contains (a) an urea thickener represented by general formula (1); R1—NHCONH—R2—NHCONH—R3 (wherein R1 and R3 may be the same or different from each other and are each independently an aromatic hydrocarbon group having 6 to 12 carbon atoms, and R2 represents an aromatic hydrocarbon group having 6 to 15 carbon atoms); (b) an organic molybdenum compound; and (c) a base oil. The composition of the present invention can extend the flaking life and lubrication life, and reduce the fretting wear.
    Type: Application
    Filed: December 16, 2010
    Publication date: April 14, 2011
    Applicants: NTN CORPORATION, KYODO YUSHI CO., LTD.
    Inventors: Kazunori KUBOTA, Makoto OISHI
  • Patent number: 7874735
    Abstract: A vehicle wheel bearing apparatus has an outer member (10), an inner member (1), an inner ring (3), and double row rolling elements (6, 6) are freely rollably retained between double row outer raceway surfaces (10a, 10a) and double row inner raceway surfaces (2a, 3a). An end face at the outboard side of the inner ring (3) is adapted to abut a stepped portion (11) formed on the wheel hub (2). The inner ring (3) is secured on the wheel hub (2) by being sandwiched between a caulked portion (2c) and the stepped portion (11). A ratio (?) of the thickness (e), of an end (3c) at the outboard side of the inner ring (3) to abut the stepped portion (11), relative to the inner diameter (d) of the inner ring (3) is limited at or smaller than a predetermined value.
    Type: Grant
    Filed: August 15, 2005
    Date of Patent: January 25, 2011
    Assignee: NTN Corporation
    Inventors: Kazuo Komori, Masahiro Kiuchi, Kazunori Kubota, Yasuhiro Aritake, Takayuki Owada
  • Patent number: 7874734
    Abstract: To provide a wheel support bearing assembly, in which the sufficient proof strength of an inner race during assemblage onto the vehicle body can be secured without its function being lowered, the wheel support bearing assembly includes an outer member, an inner member, and rows of rolling elements interposed therebetween. The inner member includes an hub axle having a flange and an inner race on an inner race mount, with raceways defined in the hub axle and the inner race. The inner race has a counterbore at its inboard end. The hub axle has a plastically deformed portion which engages an axially oriented surface of the counterbore when radially outwardly crimped and does not protrude outwardly beyond an inboard end face of the inner race. The difference P between the inner race mount and an outer peripheral face of the plastically deformed portion is 0.13 mm or more.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: January 25, 2011
    Assignee: NTN Corporation
    Inventors: Kazuo Komori, Kazunori Kubota, Hiroshi Matsunaga, Akira Fujimura, Tetsuya Hashimoto, Jun Numamoto, Masahiro Kiuchi
  • Publication number: 20100278468
    Abstract: A support bearing assembly includes a plural rows of rolling elements (5) between opposed raceway surfaces (3, 4) of outer and inner members (1, 2), respectively. The inner member (2) is formed from a hub unit (9) and an inner ring (10) mounted on an outer periphery of an inboard end portion thereof. An annular stepped area (16) is provided in an inner periphery of the inboard side of the inner ring. A crimped portion (9b) engageable with the stepped area (16) is provided on an inboard end of the hub unit (9) and has a cylindrical shape prior to a crimping process. By setting the amount of change in an inner diameter of the inboard end of the crimped portion (9b) within a preset range when a crimping punch is driven in, the amount (D) of radially outward augmentation of the crimped portion is regulated.
    Type: Application
    Filed: January 15, 2008
    Publication date: November 4, 2010
    Inventors: Akira Fujimura, Kazuo Komori, Kazunori Kubota, Tetsuya Hashimoto, Keiji Saitou
  • Patent number: 7767339
    Abstract: A method for producing a non-aqueous electrolyte secondary battery comprising the steps of: (i) mixing a positive electrode active material, a first binder A and a dispersion medium to prepare a paste A, the active material comprising a lithium-containing transition metal oxide; (ii) mixing a conductive agent, a second binder B and a dispersion medium to prepare a paste B, the conductive agent comprising carbon black; (iii) mixing the paste A and the paste B to prepare a positive electrode material paste C; (iv) applying the positive electrode material paste C onto a positive electrode core member and rolling and drying the resultant member to prepare a positive electrode; and (v) fabricating a battery using the positive electrode, a negative electrode and a non-aqueous electrolyte, wherein contact angle ?A between the non-aqueous electrolyte and the binder A and contact angle ?B between the non-aqueous electrolyte and the binder B satisfy the formula (1): ?B??A?15°.
    Type: Grant
    Filed: May 9, 2005
    Date of Patent: August 3, 2010
    Assignee: Panasonic Corporation
    Inventors: Kohei Suzuki, Masao Fukunaga, Toshihide Murata, Kazunori Kubota, Tsumoru Ohata
  • Publication number: 20100190063
    Abstract: At least (i) dispersing and mixing inorganic oxide filler, solvent and binder so as to produce a coating paint; (ii) supplying the coating paint to a gravure coater; and (iii) coating the coating paint to member via a gravure roll are included. The (i) or (ii) includes allowing the coating paint to stand still and removing an aggregate and a precipitate of inorganic oxide filler.
    Type: Application
    Filed: June 18, 2007
    Publication date: July 29, 2010
    Inventors: Yusuke Fukumoto, Tetsuya Hayashi, Kazunori Kubota
  • Patent number: 7748909
    Abstract: A vehicle wheel bearing apparatus has an outer member with a body flange and double row outer raceway surfaces. An inner member includes a wheel hub and an inner ring. They include inner raceway surfaces arranged opposite to the double row outer raceway surfaces. Double row rolling elements are freely rollably contained between the outer and inner raceway surfaces. Outer side rolling elements of the double row rolling elements are balls and inner side rolling elements of the double row rolling elements are tapered rollers. A pitch circle diameter of the inner side tapered rollers is set smaller than that of the outer side balls. A substantially conical recess is formed at an outer side end portion of the wheel hub. The depth of the recess extends to at least near the bottom of the inner raceway surface of the wheel hub. The thickness of a portion of the wheel hub where the inner raceway surface is formed is set within a predetermined range.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: July 6, 2010
    Assignee: NTN Corporation
    Inventors: Kazuo Komori, Kazuhiro Baba, Kazunori Kubota, Takayuki Norimatsu, Akira Fujimura, Shinji Morita
  • Patent number: 7641394
    Abstract: A vehicle wheel bearing apparatus has an outer member and inner member. The inner member includes a wheel hub and inner ring. The outer member and inner member include respective raceway surfaces. Double row rolling elements are freely rollably contained between the outer and inner raceway surfaces, respectively, of the outer member and the inner member. At least the inner side rolling elements of the double row rolling elements are tapered rollers. A pitch circle diameter of the inner side rolling elements is set smaller than a pitch circle diameter of the outer side rolling elements. A substantially conical recess is formed at an outer side end portion of the wheel hub. The depth of the recess extends near to a shaft shaped portion beyond the bottom of the inner raceway surface of the wheel hub. The thickness of a portion of the wheel hub where the inner raceway surface is formed is set within a predetermined range.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: January 5, 2010
    Assignee: NTN Corporation
    Inventors: Kazuo Komori, Kazuhiro Baba, Kazunori Kubota
  • Publication number: 20090325074
    Abstract: A lithium ion secondary battery includes a positive electrode, a negative electrode, a porous heat-resistant layer, and a nonaqueous electrolyte. The positive and negative electrodes reversibly absorb and release lithium ions, respectively. The porous heat-resistant layer is provided between the positive electrode and the negative electrode and includes a metal oxide as filler. The nonaqueous electrolyte is impregnated into the porous heat-resistant layer and exists between the positive electrode and the negative electrode. The filler of the porous heat-resistant layer has a particle diameter of 0.1 ?m or more and 5.0 ?m or less, D10 in particle size distribution measurement of 0.2 ?m or more and 0.6 ?m or less, and a mode diameter of 0.80 ?m or more and 1.25 ?m or less.
    Type: Application
    Filed: July 5, 2007
    Publication date: December 31, 2009
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yusuke Fukumoto, Tetsuya Hayashi, Kazunori Kubota