Patents by Inventor Tsunenori Yanagisawa

Tsunenori Yanagisawa 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: 20230354553
    Abstract: An electronic apparatus includes a first chassis which loads a processing device, a second chassis which is coupled with the first chassis to be rotatably movable relative to each other and a vapor chamber which has a first flexile resin sheet, a second flexible resin sheet and a closed space which is formed between the first resin sheet and the second resin sheet and in which a working fluid is encapsulated, extends from the inside of the first chassis to the inside of the second chassis and transports heat that the processing device generates to the second chassis side.
    Type: Application
    Filed: April 24, 2023
    Publication date: November 2, 2023
    Applicant: Lenovo (Singapore) Pte. Ltd.
    Inventors: Atsushi Ohyama, Tsunenori Yanagisawa, Mizuki Itoyama, Akinori Uchino
  • Patent number: 11358377
    Abstract: A chassis member capable of improving manufacturing efficiency is disclosed. The chassis member includes a laminate in which an interlayer is provided between a pair of fiber-reinforced resin plates made of reinforced fiber impregnated with thermoplastic resin. A frame body formed of thermoplastic resin is joined to an edge of the laminate. The edge of the laminate is provided with a thin plate portion thinner than the other portion. The frame body is joined to the thin plate portion.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: June 14, 2022
    Assignee: LENOVO (SINGAPORE) PTE LTD
    Inventors: Fumitake Mizoguchi, Seita Horikoshi, Tsunenori Yanagisawa, Takehito Yamauchi
  • Publication number: 20200262179
    Abstract: The present invention provides a resin laminate that suppresses the infiltration of a component contained in a lower resin layer into a surface resin layer in the resin laminate composed of a thermoplastic resin. The resin laminate includes a first thermoplastic resin layer positioned as the surface layer, and a second thermoplastic resin layer positioned beneath the first thermoplastic resin layer, wherein the glass transition temperature of the first thermoplastic resin layer is higher than the glass transition temperature of the second thermoplastic resin layer.
    Type: Application
    Filed: July 16, 2019
    Publication date: August 20, 2020
    Applicant: LENOVO (SINGAPORE) PTE. LTD.
    Inventors: Fumitake Mizoguchi, Seita Horikoshi, Tsunenori Yanagisawa, Takehito Yamauchi
  • Publication number: 20200130336
    Abstract: A chassis member capable of improving manufacturing efficiency is disclosed. The chassis member includes a laminate in which an interlayer is provided between a pair of fiber-reinforced resin plates made of reinforced fiber impregnated with thermoplastic resin. A frame body formed of thermoplastic resin is joined to an edge of the laminate. The edge of the laminate is provided with a thin plate portion thinner than the other portion. The frame body is joined to the thin plate portion.
    Type: Application
    Filed: October 23, 2019
    Publication date: April 30, 2020
    Inventors: Fumitake Mizoguchi, Seita Horikoshi, Tsunenori Yanagisawa, Takehito Yamauchi
  • Patent number: 10611099
    Abstract: A method for processing a fiber-reinforced resin material is disclosed. A fiber-reinforced resin material is disposed between an upper die having a projection and a lower die having a recess corresponding to the projection. The fiber-reinforced resin material includes reinforced fibers having alternately intersecting warp yarns and weft yarns and are impregnated with a thermoplastic resin. The fiber-reinforced resin material is then heated to soften the thermoplastic resin, and the upper die and the lower die are placed close to each other in order to insert the projection into a gap between the warp yarns and the weft yarns of the reinforced fibers such that the gap between the warp yarns and the weft yarns is expanded to form a through hole.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: April 7, 2020
    Assignee: LENOVO (SINGAPORE) PTE LTD
    Inventor: Tsunenori Yanagisawa
  • Patent number: 10285294
    Abstract: A chassis member for a chassis of an electronic device is disclosed. The chassis member includes an aluminum alloy layer and an alumite layer serving as an outermost layer of the chassis member and disposed on a surface of the aluminum alloy layer. A grain size of an aluminum alloy in the aluminum alloy layer is between 40 ?m and 50 ?m.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: May 7, 2019
    Assignee: LENOVO (SINGAPORE) PTE LTD
    Inventor: Tsunenori Yanagisawa
  • Publication number: 20170235336
    Abstract: A chassis member for a chassis of an electronic device is disclosed. The chassis member includes an aluminum alloy layer and an alumite layer serving as an outermost layer of the chassis member and disposed on a surface of the aluminum alloy layer. A grain size of an aluminum alloy in the aluminum alloy layer is between 40 ?m and 50 ?m.
    Type: Application
    Filed: February 16, 2017
    Publication date: August 17, 2017
    Inventor: TSUNENORI YANAGISAWA
  • Publication number: 20170197373
    Abstract: A method for processing a fiber-reinforced resin material is disclosed. A fiber-reinforced resin material is disposed between an upper die having a projection and a lower die having a recess corresponding to the projection. The fiber-reinforced resin material includes reinforced fibers having alternately intersecting warp yarns and weft yarns and are impregnated with a thermoplastic resin. The fiber-reinforced resin material is then heated to soften the thermoplastic resin, and the upper die and the lower die are placed close to each other in order to insert the projection into a gap between the warp yarns and the weft yarns of the reinforced fibers such that the gap between the warp yarns and the weft yarns is expanded to form a through hole.
    Type: Application
    Filed: January 13, 2017
    Publication date: July 13, 2017
    Inventor: TSUNENORI YANAGISAWA
  • Patent number: 9550876
    Abstract: Disclosed is a polylactic acid resin composition having excellent bleed resistance and molecular weight retention ratio. A polylactic acid resin molded body is also disclosed. The polylactic acid resin composition contains a polylactic acid resin (a), a metal hydrate (b) having an alkali metal-containing substance content of not more than 0.2% by mass, and a phosphazene derivative (c). The polylactic acid resin molded body is obtained by molding the polylactic acid resin composition. Specifically, a polylactic acid molded body can be produced by filling a melt of the polylactic acid resin composition into a mold at a temperature in the range from glass transition temperature of said polylactic acid resin (a) to 110° C. and molding the melt therein.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: January 24, 2017
    Assignee: NEC CORPORATION
    Inventors: Yukihiro Kiuchi, Tsunenori Yanagisawa, Masatoshi Iji, Kazuhiko Inoue, Shin Serizawa
  • Patent number: 8829098
    Abstract: The present invention provides a polylactic acid resin composition, containing a polylactic acid resin and a metal hydrate surface-treated with at least one silane coupling agent selected from an amino-silane coupling agent, a mercapto-silane coupling agent and an isocyanate-silane coupling agent, wherein the content of an alkali metal component in the metal hydrate is not more than 0.2% by mass and a polylactic acid resin molded article produced by molding the polylactic acid resin composition.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: September 9, 2014
    Assignees: KAO Corporation, NEC Corporation
    Inventors: Hiroaki Kishimoto, Akira Takenaka, Yukihiro Kiuchi, Tsunenori Yanagisawa, Kazuhiko Inoue, Masatoshi Iji, Shin Serizawa
  • Patent number: 8710145
    Abstract: Provided is a plant-derived resin composite material which has a sufficiently fast crystallization rate and excellent moldability and heat resistance by using a thermoplastic resin composition containing a plant-derived thermoplastic resin and an organic crystal nucleating agent which is composed of one or more low molecular weight compounds comprising at least two polar groups in the molecule, a spacing between any two of the polar groups being 34±4 angstroms.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: April 29, 2014
    Assignee: NEC Corporation
    Inventors: Tsunenori Yanagisawa, Yukihiro Kiuchi, Masatoshi Iji
  • Publication number: 20140009048
    Abstract: In a cabinet for electronic apparatus, when Mg—Li alloy is employed to reduce weight of the cabinet and depressions are molded on a surface of the cabinet through presswork by using the Mg—Li alloy, neither a rough surface nor a crack appears in any bent portion forming the depressions of the cabinet. In a cabinet for electronic apparatus including a bump shape including at least one surface formed by conducting presswork for magnesium-lithium alloy, the bump shape is a shape in which a new surface formed when a reference surface before the presswork of the magnesium-lithium alloy is pushed toward the inside of the cabinet by the presswork and is placed apart from the reference surface is surrounded by the reference surface, the surface has a plate thickness t (mm) in a range of 0.4?t?2.0, and at least one bent portion constituting the bump shape has a radius of curvature R (mm) in a range of t?R.
    Type: Application
    Filed: June 27, 2013
    Publication date: January 9, 2014
    Inventor: Tsunenori Yanagisawa
  • Publication number: 20140009047
    Abstract: In a cabinet for electronic apparatus, even when Mg—Li alloy is employed to reduce weight of the cabinet and the cabinet is molded through presswork by using the Mg—Li alloy, neither a rough surface nor a crack appears in any bent portion of the cabinet. In a cabinet for electronic apparatus including at least one surface formed by conducting presswork for Mg—Li alloy, the surface has a plate thickness t (mm) in a range of 0.4?t?2.0, at least one bent portion between at least two of the surfaces has a radius of curvature r (mm) on an inside of the bent portion in a range of t?r, and at least one side surface standing relative to a bottom surface selected from the surfaces has a height H (mm) in a range of 0?H?r+4.
    Type: Application
    Filed: June 27, 2013
    Publication date: January 9, 2014
    Inventor: Tsunenori Yanagisawa
  • Patent number: 8586658
    Abstract: Provided is a polylactic acid resin composition obtained by adding a carboxylic acid amide and a carboxylic acid ester each of which has at least one polar group in a molecule to a polylactic acid resin reacted with a (meth)acrylate compound. Also provided is a polylactic acid resin molded article which is a molded article obtained by molding the polylactic acid resin composition, manufactured by setting a mold temperature to a glass transition temperature of a polylactic acid resin plus 20° C. or higher and a melting point thereof minus 20° C. or lower, at the time of injection molding the polylactic acid resin composition. Thus, a resin composition in which a moldability is improved at a temperature at which a polylactic acid resin is crystallized, and a molded article therefrom are provided.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: November 19, 2013
    Assignees: NEC Corporation, Unitika, Ltd.
    Inventors: Shin Serizawa, Tsunenori Yanagisawa, Kazuhiko Inou, Masatoshi Iji, Yohei Kabashima, Kazue Ueda, Hiroo Kamikawa, Norio Fukawa
  • Patent number: 8202450
    Abstract: A flame-retardant thermoplastic resin composition comprising at least a plant-derived resin (A) and a flame retardant (B), wherein the weight proportions of the individual components in the flame-retardant thermoplastic resin composition are: 30?W1<55.5 44.5<X1?70 wherein W1 is the percentage by mass of the plant-derived resin (A) and X1 is the percentage by mass of the flame retardant (B), and 90% by mass or more of the flame retardant (B) is composed of a metal hydrate containing an alkali metal-based substance in an amount of 0.2% by mass or less.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: June 19, 2012
    Assignee: NEC Corporation
    Inventors: Yukihiro Kiuchi, Tsunenori Yanagisawa, Syukichi Tanaka, Makoto Soyama, Kazuhiko Inoue, Masatoshi Iji
  • Publication number: 20110118395
    Abstract: Disclosed is a polylactic acid resin composition having excellent bleed resistance and molecular weight retention ratio. A polylactic acid resin molded body is also disclosed. The polylactic acid resin composition contains a polylactic acid resin (a), a metal hydrate (b) having an alkali metal-containing substance content of not more than 0.2% by mass, and a phosphazene derivative (c). The polylactic acid resin molded body is obtained by molding the polylactic acid resin composition. Specifically, a polylactic acid molded body can be produced by filling a melt of the polylactic acid resin composition into a mold at a temperature in the range from glass transition temperature of said polylactic acid resin (a) to 110° C. and molding the melt therein.
    Type: Application
    Filed: April 16, 2009
    Publication date: May 19, 2011
    Applicant: NEC COPORATION
    Inventors: Yukihiro Kiuchi, Tsunenori Yanagisawa, Masatoshi Iji, Kazuhiko Inoue, Shin Serizawa
  • Publication number: 20110060080
    Abstract: The present invention provides a polylactic acid resin composition, containing a polylactic acid resin and a metal hydrate surface-treated with at least one silane coupling agent selected from an amino-silane coupling agent, a mercapto-silane coupling agent and an isocyanate-silane coupling agent, wherein the content of an alkali metal component in the metal hydrate is not more than 0.2% by mass and a polylactic acid resin molded article produced by molding the polylactic acid resin composition.
    Type: Application
    Filed: April 8, 2009
    Publication date: March 10, 2011
    Inventors: Hiroaki Kishimoto, Akira Takenaka, Yukihiro Kiuchi, Tsunenori Yanagisawa, Kazuhiko Inoue, Masatoshi Iji, Shin Serizawa
  • Publication number: 20100311886
    Abstract: A flame-retardant thermoplastic resin composition comprising at least a plant-derived resin (A) and a flame retardant (B), wherein the weight proportions of the individual components in the flame-retardant thermoplastic resin composition are: 30?W1<55.5 44.5<X1?70 wherein W1 is the percentage by mass of the plant-derived resin (A) and X1 is the percentage by mass of the flame retardant (B), and 90% by mass or more of the flame retardant (B) is composed of a metal hydrate containing an alkali metal-based substance in an amount of 0.2% by mass or less.
    Type: Application
    Filed: July 28, 2010
    Publication date: December 9, 2010
    Inventors: Yukihiro Kiuchi, Tsunenori Yanagisawa, Syukichi Tanaka, Makoto Soyama, Kazuhiko Inoue, Masatoshi Iji
  • Patent number: 7790069
    Abstract: A flame-retardant thermoplastic resin composition comprising at least a plant-derived resin (A) and a flame retardant (B), wherein the weight proportions of the individual components in the flame-retardant thermoplastic resin composition are: 30?W1<55.5 44.5<X1?70 wherein W1 is the percentage by mass of the plant-derived resin (A) and X1 is the percentage by mass of the flame retardant (B), and 90% by mass or more of the flame retardant (B) is composed of a metal hydrate containing an alkali metal-based substance in an amount of 0.2% by mass or less.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: September 7, 2010
    Assignee: NEC Corporation
    Inventors: Yukihiro Kiuchi, Tsunenori Yanagisawa, Syukichi Tanaka, Makoto Soyama, Kazuhiko Inoue, Masatoshi Iji
  • Publication number: 20090286075
    Abstract: The thermally conductive resin material of the present invention has an excellent thermal conductive property without impairing the intrinsic practical properties such as the forming processability, lightness in weight and mechanical strength possessed by resins and has an anisotropic thermal conductive property capable of controlling the directionality and the transfer amount of the thermal conduction. The thermally conductive resin material of the present invention is a thermally conductive resin material including a base material of a thermoplastic resin (A) and a fibrous filler (C), wherein an organic compound (B) incompatible with the resin component is present as dispersed particles in the resin component, and two or more elements of the fibrous filler (C) are in contact with the surface of each of the dispersed particles or are located in each of the dispersed particles.
    Type: Application
    Filed: April 6, 2007
    Publication date: November 19, 2009
    Applicant: NEC CORPORATION
    Inventors: Akinobu Nakamura, Masatoshi Iji, Tsunenori Yanagisawa, Keiji Hirano