Patents by Inventor Shoji Nozato

Shoji Nozato 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: 11489152
    Abstract: Provided is a sulfur-carbon material composite body which, when used for an electrode of a secondary battery, is unlikely to degrade cycle characteristics at the time of charging and discharging of the secondary battery. Disclosed is a sulfur-carbon material composite body including a first carbon material having a graphene layered structure; a spacer at least partially disposed between graphene layers of the first carbon material or at an end of the first carbon material; and sulfur or a sulfur-containing compound at least partially disposed between the graphene layers of the first carbon material or at the end of the first carbon material.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: November 1, 2022
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Hiroyuki Nakatani, Shoji Nozato, Hiromori Tsutsumi, Kazuhide Ueno
  • Patent number: 11479716
    Abstract: A light-modulating material of which the light transmittance can be controlled over a wide region from visible light to infrared light by voltage application is provided. The light-modulating material comprises a graphene-like carbon material having an aspect ratio of 3 or more and 330 or less.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: October 25, 2022
    Assignees: SEKISUI CHEMICAL CO., LTD., HIROSHIMA UNIVERSITY
    Inventors: Rende Sun, Akira Nakasuga, Shoji Nozato, Keigo Oowashi, Hiroji Fukui, Takeharu Haino, Ryo Sekiya
  • Publication number: 20220266222
    Abstract: The present invention provides a column filler for liquid chromatography that has a great adsorption capacity, adjustable adsorption selectivity, and high shape retainability and therefore is usable for measurement of various substances and capable of achieving excellent separation performance and a high filling rate in a column when used as a column filler for liquid chromatography. Provided is a column filler for liquid chromatography including carbon-coated porous particles, the carbon-coated porous particles including porous particles each having a coating layer containing an amorphous carbon on a surface.
    Type: Application
    Filed: May 13, 2022
    Publication date: August 25, 2022
    Applicants: SEKISUI CHEMICAL CO., LTD., NATIONAL UNIVERSITY CORPORATION KUMAMOTO UNIVERSITY
    Inventors: Ren-de SUN, Shoji NOZATO, Akira NAKASUGA, Hirotaka IHARA, Makoto TAKAFUJI, Yutaka KUWAHARA, Hiroki NOGUCHI, Tianhang LIU
  • Patent number: 11404686
    Abstract: The present invention provides a negative electrode active material for lithium ion batteries which has high adhesiveness and followability to a negative electrode active material in volume expansion and contraction during charging and discharging, excellent contact and adhesiveness to a conductive aid, a binder, and a current collector, and a high suppressing effect on decomposition of an electrolyte solution. Due to these features, the negative electrode active material for lithium ion batteries is capable of achieving excellent cycle characteristics and rate characteristics and high coulombic efficiency. The present invention also provides a negative electrode for lithium ion secondary batteries and a lithium ion secondary battery each including the negative electrode active material for lithium ion batteries, and a method for producing a negative electrode active material for lithium ion batteries.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: August 2, 2022
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Ren-de Sun, Shoji Nozato, Akira Nakasuga
  • Patent number: 11261321
    Abstract: Provided is a gas barrier material having superior gas barrier properties. This gas barrier material 1 comprises a matrix resin 2, and a carbon material 3 disposed in the matrix resin 2, wherein the carbon material 3 contains a partially exfoliated graphite having a structure in which graphite is partially exfoliated.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: March 1, 2022
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Mikitoshi Suematsu, Hiroji Fukui, Akira Nakasuga, Shoji Nozato
  • Publication number: 20210367228
    Abstract: A negative electrode material for a secondary battery is provided that can prevent deterioration of the cycle characteristic during the charge and discharge of the secondary battery and can enhance the initial coulombic efficiency. A negative electrode material for a secondary battery, including: a negative electrode active material containing a metal or a metal compound that can absorb and release an alkali metal ion or an alkaline earth metal ion, and containing a first carbon material that can absorb and release the alkali metal ion or the alkaline earth metal ion; and a conductive auxiliary containing a second carbon material different from the first carbon material, the negative electrode material having a capacity of 400 mAh/g or more, and the second carbon material being partially exfoliated graphite having a graphite structure in which graphite is partially exfoliated.
    Type: Application
    Filed: June 7, 2019
    Publication date: November 25, 2021
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Rende SUN, Shoji NOZATO, Akira NAKASUGA
  • Publication number: 20210283576
    Abstract: The present invention provides a column filler for liquid chromatography that has a great adsorption capacity, adjustable adsorption selectivity, and high shape retainability and therefore is usable for measurement of various substances and capable of achieving excellent separation performance and a high filling rate in a column when used as a column filler for liquid chromatography. Provided is a column filler for liquid chromatography including carbon-coated porous particles, the carbon-coated porous particles including porous particles each having a coating layer containing an amorphous carbon on a surface.
    Type: Application
    Filed: November 11, 2017
    Publication date: September 16, 2021
    Applicants: SEKISUI CHEMICAL CO., LTD., NATIONAL UNIVERSITY CORPORATION KUMAMOTO UNIVERSITY
    Inventors: Ren-de SUN, Shoji NOZATO, Akira NAKASUGA, Hirotaka IHARA, Makoto TAKAFUJI, Yutaka KUWAHARA, Hiroki NOGUCHI, Tianhang LIU
  • Patent number: 11078209
    Abstract: Provided is a new polycyclic aromatic hydrocarbon derivative. The polycyclic aromatic hydrocarbon derivative is a derivative of a polycyclic aromatic hydrocarbon having 6 or more aromatic rings and has a substituent represented by the following formula (1). (In the formula (1), R1 and R2 are carbon atoms of the aromatic rings in the polycyclic aromatic hydrocarbon, and R3 to R5 are carbon atoms of an aromatic ring or a heterocyclic ring in a group having the aromatic ring or the heterocyclic ring. n is 0 or 1, and m is the number of substituents.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: August 3, 2021
    Assignees: SEKISUI CHEMICAL CO., LTD., HIROSHIMA UNIVERSITY
    Inventors: Akira Nakasuga, Shoji Nozato, Hiroji Fukui, Takeharu Haino, Ryo Sekiya
  • Publication number: 20210168972
    Abstract: A heat conductive sheet having excellent heat conductivity in the thickness direction is provided. A heat conductive sheet (1) comprises a first carbon material having a graphene laminated structure (2), orientation-controlling particles (3), and a first resin (4), wherein at least a part of the first carbon material (2) is oriented in a direction different from the surface direction of the heat conductive sheet (1) due to the presence of the orientation-controlling particles (3), and the ratio of the average particle diameter of the first carbon material (2) to the average particle diameter of the orientation-controlling particles (3) (the first carbon material (2)/the orientation-controlling particles (3)) is 0.09 or more and less than 4.0.
    Type: Application
    Filed: December 10, 2018
    Publication date: June 3, 2021
    Inventors: Kouji Ashiba, Keigo Oowashi, Shoji Nozato, Makoto Takafuji, Hirotaka Ihara
  • Patent number: 10984921
    Abstract: Provided is a conductive paste which makes it possible to form a conductive layer having excellent conductivity even when spherical copper powder having a small particle diameter is used. Disclosed is a conductive paste containing a conductive filler and a binder resin.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: April 20, 2021
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Masahiro Ishii, Akira Nakasuga, Shoji Nozato, Shigekatsu Ohnishi
  • Publication number: 20200388826
    Abstract: The present invention provides a negative electrode active material for lithium ion batteries which has high adhesiveness and followability to a negative electrode active material in volume expansion and contraction during charging and discharging, excellent contact and adhesiveness to a conductive aid, a binder, and a current collector, and a high suppressing effect on decomposition of an electrolyte solution. Due to these features, the negative electrode active material for lithium ion batteries is capable of achieving excellent cycle characteristics and rate characteristics and high coulombic efficiency. The present invention also provides a negative electrode for lithium ion secondary batteries and a lithium ion secondary battery each including the negative electrode active material for lithium ion batteries, and a method for producing a negative electrode active material for lithium ion batteries.
    Type: Application
    Filed: April 26, 2018
    Publication date: December 10, 2020
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Ren-de SUN, Shoji NOZATO, Akira NAKASUGA
  • Patent number: 10741832
    Abstract: A positive electrode active material for a lithium ion battery includes a coating layer comprising amorphous carbon on a surface of a positive electrode active material, wherein the amorphous carbon is derived from carbon contained in an oxazine resin, a ratio of a peak intensity of a G band to a peak intensity of a D band is 1.0 or greater when the amorphous carbon is measured by Raman spectroscopy, an average film thickness of the coating layer is 100 nm or less, and a coefficient of variation (CV value) of a film thickness of the coating layer is 10% or less.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: August 11, 2020
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Ren-de Sun, Shoji Nozato, Akira Nakasuga, Masanori Nakamura
  • Publication number: 20200207777
    Abstract: Provided is a new polycyclic aromatic hydrocarbon derivative. The polycyclic aromatic hydrocarbon derivative is a derivative of a polycyclic aromatic hydrocarbon having 6 or more aromatic rings and has a substituent represented by the following formula (1). (In the formula (1), R1 and R2 are carbon atoms of the aromatic rings in the polycyclic aromatic hydrocarbon, and R3 to R5 are carbon atoms of an aromatic ring or a heterocyclic ring in a group having the aromatic ring or the heterocyclic ring. n is 0 or 1, and m is the number of substituents.
    Type: Application
    Filed: July 17, 2018
    Publication date: July 2, 2020
    Inventors: Akira Nakasuga, Shoji Nozato, Hiroji Fukui, Takeharu Haino, Ryo Sekiya
  • Patent number: 10680237
    Abstract: There is provided an active material-exfoliated graphite composite that allows a lithium ion secondary battery to be obtained in which the initial capacity is large and deterioration in charge and discharge cycle characteristics is less likely to occur, when used for a negative electrode material for lithium ion secondary batteries. An active material-exfoliated graphite composite comprising: partially exfoliated graphite having a structure in which graphite is partially exfoliated; and an active material that is in the form of particles capable of intercalating and deintercalating lithium ions by composite formation with the partially exfoliated graphite, or particles capable of adsorbing and desorbing lithium ions by composite formation with the partially exfoliated graphite, wherein the active material has an average particle diameter of 1 ?m or more and 100 ?m or less.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: June 9, 2020
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Akihiko Fujiwara, Shoji Nozato, Akira Nakasuga, Hiroshi Yoshitani
  • Publication number: 20200176763
    Abstract: Provided is a sulfur-carbon material composite body which, when used for an electrode of a secondary battery, is unlikely to degrade cycle characteristics at the time of charging and discharging of the secondary battery. Disclosed is a sulfur-carbon material composite body including a first carbon material having a graphene layered structure; a spacer at least partially disposed between graphene layers of the first carbon material or at an end of the first carbon material; and sulfur or a sulfur-containing compound at least partially disposed between the graphene layers of the first carbon material or at the end of the first carbon material.
    Type: Application
    Filed: May 31, 2018
    Publication date: June 4, 2020
    Inventors: Hiroyuki Nakatani, Shoji Nozato, Hiromori Tsutsumi, Kazuhide Ueno
  • Patent number: 10658126
    Abstract: There is provided a capacitor electrode material that does not require the use of a conductive aid and can increase the capacitance of an electric double layer capacitor. A capacitor electrode material comprising resin-remaining partially exfoliated graphite obtained by pyrolyzing a resin in a composition in which the resin is fixed to graphite or primary exfoliated graphite by grafting or adsorption, the resin-remaining partially exfoliated graphite having a structure in which graphite is partially exfoliated, with part of the resin remaining; and a binder resin.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: May 19, 2020
    Assignees: SEKISUI CHEMICAL CO., LTD., OITA UNIVERSITY
    Inventors: Akihiko Fujiwara, Shoji Nozato, Akira Nakasuga, Shunji Hyodo, Hiroshi Yoshitani, Masahiro Toyoda
  • Patent number: 10647912
    Abstract: A carbon-coated vanadium dioxide particle includes a vanadium dioxide particle; and a coating layer containing amorphous carbon on a surface of the vanadium dioxide particle, the amorphous carbon being derived from carbon contained in an oxazine resin, and having a peak intensity ratio of a G band to a band of 1.5 or greater as determined from a Raman spectrum. The coating layer has an average thickness of 50 nm or less. The coating layer has a coefficient of variation (CV value) of thickness of 7% or less.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: May 12, 2020
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Ren-de Sun, Shoji Nozato, Akira Nakasuga, Masanori Nakamura, Naoyuki Nagatani, Keigo Oowashi
  • Patent number: 10644318
    Abstract: Provided is a carbonaceous material capable of enhancing the initial charge and discharge efficiency and the cycle characteristics of lithium ion secondary batteries. The carbonaceous material is used as an electrode material for a lithium ion secondary battery and has a volume resistivity of 0.7 ?·cm or less as measured at a pressure of 13 MPa in the form of a mixture of 5 wt % of the carbonaceous material and 95 wt % of lithium cobaltate.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: May 5, 2020
    Assignee: SEKESUI CHEMICAL CO., LTD.
    Inventors: Takuya Wada, Hiroki Masuda, Naoki Sasagawa, Akira Nakasuga, Shoji Nozato
  • Publication number: 20200118702
    Abstract: Provided is a conductive paste which makes it possible to form a conductive layer having excellent conductivity even when spherical copper powder having a small particle diameter is used. Disclosed is a conductive paste containing a conductive filler and a binder resin.
    Type: Application
    Filed: June 28, 2018
    Publication date: April 16, 2020
    Inventors: Masahiro Ishii, Akira Nakasuga, Shoji Nozato, Shigekatsu Ohnishi
  • Publication number: 20190292444
    Abstract: A light-modulating material of which the light transmittance can be controlled over a wide region from visible light to infrared light by voltage application is provided. The light-modulating material comprises a graphene-like carbon material having an aspect ratio of 3 or more and 330 or less.
    Type: Application
    Filed: July 21, 2017
    Publication date: September 26, 2019
    Inventors: Rende Sun, Akira Nakasuga, Shoji Nozato, Keigo Oowashi, Hiroji Fukui, Takeharu Haino, Ryo Sekiya