Patents by Inventor Kazuaki Matsumoto

Kazuaki Matsumoto 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: 11230087
    Abstract: Provided are heat insulating sheets that may include a resin film having a metal layer and a nonwoven fabric including resin fiber, wherein the resin film and the nonwoven fabric are joined by through holes penetrating the resin film and the nonwoven fabric, and wherein a ratio (La/Lb) of an average distance (La) between the through holes in the resin film to an average distance (Lb) between the through holes in the nonwoven fabric is 1.001 or more and 1.10 or less. Further provided are manufacturing methods of a heat insulating sheet that may include a resin film having a metal layer and a nonwoven fabric including a resin fiber.
    Type: Grant
    Filed: September 23, 2020
    Date of Patent: January 25, 2022
    Assignees: KANEKA CORPORATION, TOCHIGI KANEKA CORPORATION
    Inventors: Kazuaki Matsumoto, Hiroyuki Kikuchi, Shuzo Imai
  • Patent number: 11104753
    Abstract: The purpose of the present invention is to provide an organic polymer fine particle which can be hardly fallen off from a film when used as an anti-blocking agent for a film. The organic polymer fine particle according to the present invention is characterized in comprising a (meth)acrylate polymer crosslinked by a bifunctional crosslinkable monomer and a hindered phenol antioxidant or a component derived therefrom, wherein a ratio of a structure unit composed of the bifunctional crosslinkable monomer in the (meth)acrylate polymer crosslinked by the bifunctional crosslinkable monomer is 5 mass % or more and 35 mass % or less, the sedimentation start time is 16 seconds or more, an amount of Al measured by a high-frequency inductively coupled plasma emission spectrometric analysis method is 1 ppm or less, and an amount of a sulfur atom measured by a high-frequency inductively coupled plasma emission spectrometric analysis method is 300 ppm or less in the organic polymer fine particle.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: August 31, 2021
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Hiroko Okochi, Tomonari Takata, Kazuaki Matsumoto, Yasutaka Nakatani
  • Publication number: 20210104726
    Abstract: The present invention provides an electrolytic solution for a lithium ion secondary battery containing imide-based lithium salt, and a lithium ion secondary battery that are able to block corrosion of aluminum and improve battery performance, even without increasing the concentration of the imide-based lithium salt. A specific solvent mixture having a specific composition is used in the electrolytic solution containing the imide-based lithium salt. Specifically, the electrolytic solution uses a solvent mixture containing a first solvent and a second solvent mixed in a specific ratio, the first solvent interacting with an electrolyte salt and showing a shift of a peak attributed to vibration of the solvent to a different position in the Raman spectrum, the second solvent having no interaction with the electrolyte salt.
    Type: Application
    Filed: September 30, 2020
    Publication date: April 8, 2021
    Inventors: Kazuaki MATSUMOTO, Takeshi FUJINO
  • Publication number: 20210001605
    Abstract: Provided are heat insulating sheets that may include a resin film having a metal layer and a nonwoven fabric including resin fiber, wherein the resin film and the nonwoven fabric are joined by through holes penetrating the resin film and the nonwoven fabric, and wherein a ratio (La/Lb) of an average distance (La) between the through holes in the resin film to an average distance (Lb) between the through holes in the nonwoven fabric is 1.001 or more and 1.10 or less. Further provided are manufacturing methods of a heat insulating sheet that may include a resin film having a metal layer and a nonwoven fabric including a resin fiber.
    Type: Application
    Filed: September 23, 2020
    Publication date: January 7, 2021
    Applicants: KANEKA CORPORATION, TOCHIGI KANEKA CORPORATION
    Inventors: Kazuaki Matsumoto, Hiroyuki Kikuchi, Shuzo Imai
  • Patent number: 10355188
    Abstract: The present invention provides an LED lamp heat sink which has excellent thermal conductivity and moldability, is light in weight, and can be produced at low cost. The LED lamp heat sink is partially or wholly made of a thermally conductive resin composition and cools an LED module. The thermally conductive resin composition contains at least: 10 to 50 wt. % of thermoplastic polyester resin (A) having a number average molecular weight of 12,000 to 70,000; 10 to 50 wt. % of polyester-polyether copolymer (B); and 40 to 70 wt. % of scale-like graphite (C) having a fixed carbon content of 98 wt. % or more and an aspect ratio of 21 or more. Specific gravity of the thermally conductive resin composition is 1.7 to 2.0. Heat conductivity of the thermally conductive resin composition in a surface direction is 15 W/(m·K) or more.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: July 16, 2019
    Assignee: KANEKA CORPORATION
    Inventors: Toshiaki Ezaki, Kazuaki Matsumoto
  • Patent number: 10290894
    Abstract: An exemplary embodiment of the present invention is a secondary battery which comprises a negative electrode and a battery electrolyte liquid comprising a supporting salt and a non-aqueous electrolyte solvent; wherein the negative electrode is obtained by pre-forming a SEI coating film on a negative electrode structure which is formed by binding a negative electrode active substance comprising a metal (a). that can be alloyed with lithium, a metal oxide (b) that can absorb and desorb lithium ion and a carbon material (c) that can absorb and desorb lithium ion, to a negative electrode current collector with a negative electrode binder, and wherein the non-aqueous electrolyte solvent contains at least an ionic liquid.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: May 14, 2019
    Assignee: NEC CORPORATION
    Inventors: Kazuaki Matsumoto, Daisuke Kawasaki, Masahiro Suguro, Midori Shimura, Yoko Hashizume
  • Patent number: 10253178
    Abstract: A method of improving flowability of polycarbonate or polyarylate includes mixing the polycarbonate or the polyarylate with a flowability improver including a polyester. The polyester is a polycondensate of monomers including a bisphenol component (B) and a dicarboxylic acid component (C) at a molar ratio satisfying (B):(C)=45:55-55:45. The polyester includes a portion derived from the bisphenol component (B) and the dicarboxylic acid component (C) in an amount of 50 mol % or more.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: April 9, 2019
    Assignee: KANEKA CORPORATION
    Inventors: Shusuke Yoshihara, Hidekazu Kawakubo, Keika Hattori, Kazuaki Matsumoto, Kazunori Saegusa
  • Patent number: 10222051
    Abstract: An LED heat sink for vehicles includes an injection molded product of a thermally conductive resin composition. The thermally conductive resin composition includes 50 to 90 weight % of a thermoplastic polyester resin having a number average molecular weight of 12,000 to 70,000, and 10 to 50 weight % of a flaked graphite having a fixed carbon content of at least 98 mass %, and an aspect ratio of at least 21, and the thermally conductive resin composition has a specific gravity of 1.4 to 1.7, and an in-plane thermal conductivity of at least 1 W/(m·K).
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: March 5, 2019
    Assignee: KANEKA CORPORATION
    Inventors: Toshiaki Ezaki, Soichi Uchida, Kazuaki Matsumoto
  • Patent number: 10224568
    Abstract: It is an object of the present invention to provide an electrolytic solution capable of suppressing gas generation. The present exemplary embodiment is an electrolytic solution comprising a supporting salt, a nonaqueous solvent that dissolves the supporting salt, a cyclic sulfonic acid ester compound represented by predetermined formula (1), and an acid anhydride. According to the exemplary embodiment, an electrolytic solution capable of suppressing gas generation can be provided.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: March 5, 2019
    Assignee: NEC Corporation
    Inventors: Noboru Yoshida, Shinsaku Saitho, Kazuaki Matsumoto, Ikiko Shimanuki, Daisuke Kawasaki, Yuukou Katou, Hitoshi Ishikawa
  • Publication number: 20180171050
    Abstract: The purpose of the present invention is to provide an organic polymer fine particle which can be hardly fallen off from a film when used as an anti-blocking agent for a film. The organic polymer fine particle according to the present invention is characterized in comprising a (meth)aclylate polymer crosslinked by a bifunctional crosslinkable monomer and a hindered phenol antioxidant or a component derived therefrom, wherein a ratio of a structure unit composed of the bifunctional crosslinkable monomer in the (meth)aclylate polymer crosslinked by the bifunctional crosslinkable monomer is 5 mass % or more and 35 mass % or less, the sedimentation start time is 16 seconds or more, an amount of Al measured by a high-frequency inductively coupled plasma emission spectrometric analysis method is 1 ppm or less, and an amount of a sulfur atom measured by a high-frequency inductively coupled plasma emission spectrometric analysis method is 300 ppm or less in the organic polymer fine particle.
    Type: Application
    Filed: June 2, 2016
    Publication date: June 21, 2018
    Applicant: NIPPON SHOKUBAI CO., LTD.
    Inventors: Hiroko OKOCHI, Tomonari TAKATA, Kazuaki MATSUMOTO, Yasutaka NAKATANI
  • Patent number: 9991561
    Abstract: The present invention provides a lithium ion secondary battery comprising: a positive electrode; a negative electrode comprising a negative electrode active material comprising at least one carbon material selected from the group consisting of a natural graphite, an artificial graphite, a non-graphitizable carbon and a graphitizable carbon; and an electrolyte solution comprising a specific cyclic disulfonate ester compound and an acid anhydride.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: June 5, 2018
    Assignee: NEC Corporation
    Inventors: Takeshi Azami, Hitoshi Ishikawa, Noboru Yoshida, Ikiko Shimanuki, Kazuaki Matsumoto, Makihiro Otohata
  • Patent number: 9920155
    Abstract: The object of the present invention is to provide a resin particle having a protrusion that is more resistant to the detachment and having a uniform protrusion size and protrusion distribution density. The resin particle of the present invention comprises: a spherical part and a peripheral part having a plurality of convex part formed on the surface of the spherical part, wherein the spherical part and the peripheral part comprise a vinyl polymer and/or a polysiloxane component, the spherical part and the peripheral part are different in the composition, the melting point of the peripheral part is not less than 200° C., and the curvature center of the boundary between the peripheral part and the spherical part determined by a transmission electron microscope observation of the cross-section of the resin particle exists in the spherical part.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: March 20, 2018
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Kazuaki Matsumoto, Yohei Okubo, Tomonari Takata, Junko Kita, Naoki Kobayashi
  • Patent number: 9859589
    Abstract: It is an object of the present invention to provide a method for producing a secondary battery in which water in the outer package can be removed even when the secondary battery includes an electrolytic solution containing a halogen-containing compound.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: January 2, 2018
    Assignee: NEC Corporation
    Inventors: Jiro Iriyama, Makihiro Otohata, Kazuaki Matsumoto, Ikiko Shimanuki
  • Patent number: 9809735
    Abstract: The present invention relates to: (i) a resin composition having excellent thermal conductivity and capable of being processed into a thin-walled and flexible molded article, the resin composition containing: (a) a resin consisting of 40 to 60 mol % of a unit (A) having a biphenyl group, and 5 to 40 mol % of a linear unit (B), and 5 to 40 mol % of a linear unit (C), where a thermal conductivity of the resin itself is not less than 0.4 W/(m·K); and (b) an inorganic filler having thermal conductivity of not less than 1 W/(m·K), (ii) a heat-dissipating or heat-transferring resin material containing the resin composition, and (iii) a thermally conductive membrane containing the resin composition.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: November 7, 2017
    Assignee: Kaneka Corporation
    Inventors: Shusuke Yoshihara, Syoji Ubukata, Kazuaki Matsumoto
  • Publication number: 20170317257
    Abstract: The present invention provides an LED lamp heat sink which has excellent thermal conductivity and moldability, is light in weight, and can be produced at low cost. The LED lamp heat sink is partially or wholly made of a thermally conductive resin composition and cools an LED module. The thermally conductive resin composition contains at least: 10 to 50 wt. % of thermoplastic polyester resin (A) having a number average molecular weight of 12,000 to 70,000; 10 to 50 wt. % of polyester-polyether copolymer (B); and 40 to 70 wt. % of scale-like graphite (C) having a fixed carbon content of 98 wt. % or more and an aspect ratio of 21 or more. Specific gravity of the thermally conductive resin composition is 1.7 to 2.0. Heat conductivity of the thermally conductive resin composition in a surface direction is 15 W/(m·K) or more.
    Type: Application
    Filed: October 23, 2015
    Publication date: November 2, 2017
    Applicant: Kaneka Corporation
    Inventors: Toshiaki Ezaki, Kazuaki Matsumoto
  • Patent number: 9748608
    Abstract: The present invention relates to a secondary battery, comprising an electrode element comprising a positive electrode and a negative electrode placed opposite to each other, an electrolyte, and an outer package housing the electrode element and the electrolyte; wherein the negative electrode is formed by binding a negative electrode active material, which comprises a metal (a) capable of being alloyed with lithium, a metal oxide (b) capable of intercalating/deintercalating lithium ions, and a carbon material (c) capable of intercalating/deintercalating lithium ions, to a negative electrode current collector with a negative electrode binder; and the electrolyte comprises a lithium salt dissolved in a solvent comprising 65 vol % or more of a phosphate ester compound, and more than 0 vol % and less than 20 vol % of a fluorinated carbonate compound.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: August 29, 2017
    Assignee: NEC Corporation
    Inventors: Daisuke Kawasaki, Kazuaki Matsumoto
  • Publication number: 20170204262
    Abstract: A method of improving flowability of polycarbonate or polyarylate includes mixing the polycarbonate or the polyarylate with a flowability improver including a polyester. The polyester is a polycondensate of monomers including a bisphenol component (B) and a dicarboxylic acid component (C) at a molar ratio satisfying (B):(C)=45:55?55:45. The polyester includes a portion derived from the bisphenol component (B) and the dicarboxylic acid component (C) in an amount of 50 mol % or more.
    Type: Application
    Filed: April 3, 2017
    Publication date: July 20, 2017
    Applicant: KANEKA CORPORATION
    Inventors: Shusuke YOSHIHARA, Hidekazu KAWAKUBO, Keika HATTORI, Kazuaki MATSUMOTO, Kazunori SAEGUSA
  • Publication number: 20170167716
    Abstract: An LED heat sink for vehicles includes an injection molded product of a thermally conductive resin composition. The thermally conductive resin composition includes 50 to 90 weight % of a thermoplastic polyester resin having a number average molecular weight of 12,000 to 70,000, and 10 to 50 weight % of a flaked graphite having a fixed carbon content of at least 98 mass %, and an aspect ratio of at least 21, and the thermally conductive resin composition has a specific gravity of 1.4 to 1.7, and an in-plane thermal conductivity of at least 1 W/(m·K).
    Type: Application
    Filed: March 1, 2017
    Publication date: June 15, 2017
    Applicant: Kaneka Corporation
    Inventors: Toshiaki Ezaki, Soichi Uchida, Kazuaki Matsumoto
  • Publication number: 20170096515
    Abstract: The object of the present invention is to provide a resin particle having a protrusion that is more resistant to the detachment and having a uniform protrusion size and protrusion distribution density. The resin particle of the present invention comprises: a spherical part and a peripheral part having a plurality of convex part formed on the surface of the spherical part, wherein the spherical part and the peripheral part comprise a vinyl polymer and/or a polysiloxane component, the spherical part and the peripheral part are different in the composition, the melting point of the peripheral part is not less than 200° C., and the curvature center of the boundary between the peripheral part and the spherical part determined by a transmission electron microscope observation of the cross-section of the resin particle exists in the spherical part.
    Type: Application
    Filed: March 18, 2015
    Publication date: April 6, 2017
    Applicant: NIPPON SHOKUBAI CO., LTD.
    Inventors: Kazuaki MATSUMOTO, Yohei OKUBO, Tomonari TAKATA, Junko KITA, Naoki KOBAYASHI
  • Patent number: 9543618
    Abstract: An objection is to provide a high performance secondary battery having good flame retardancy and cycle properties. The present exemplary embodiment provides a secondary battery comprising an electrode assembly in which a positive electrode and a negative electrode are arranged to face each other, an electrolyte liquid and a package accommodating the electrode assembly and the electrolyte liquid, wherein the negative electrode is formed by binding a negative electrode active substance comprising a metal (a) capable of being alloyed with lithium, a metal oxide (b) capable of occluding and releasing lithium ions and a carbon material (c) capable of occluding and releasing lithium ions, to a negative electrode current collector, with a negative electrode binder, and the electrolyte liquid comprises a supporting salt and an electrolytic solvent, the electrolytic solvent comprising at least one phosphate ester compound selected from phosphite esters, phosphonate esters and bisphosphonate esters.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: January 10, 2017
    Assignee: NEC CORPORATION
    Inventors: Kazuaki Matsumoto, Daisuke Kawasaki, Masahiro Suguro, Midori Shimura, Yoko Hashizume