Patents by Inventor Shigeru Sakamoto

Shigeru Sakamoto 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: 20240123834
    Abstract: A control device includes a switching control unit, an information acquisition unit, and a difference acquisition unit. The switching control unit performs switching control that increases braking torque of the braking device while decreasing braking torque of the rotating electrical machine, when a vehicle is decelerated. The information acquisition unit acquires information on a state of the vehicle. The difference acquisition unit acquires a braking torque difference indicating a difference between braking torque required for keeping a stopped state of the vehicle and braking torque of the braking device, when the vehicle is stopped. After the information acquisition unit detects the stopped state of the vehicle, the switching control unit corrects output torque of the rotating electrical machine based on the braking torque difference.
    Type: Application
    Filed: December 15, 2023
    Publication date: April 18, 2024
    Applicant: DENSO CORPORATION
    Inventors: Haibo LIU, Keisuke Kawai, Akira Sakamoto, Shigeru Kamio, Tatsuya Takagi
  • Patent number: 11958921
    Abstract: To provide a disposable diaper enabling reduction in re-wet amount and having an excellent speed of incorporating liquid regardless of concentration and configuration of a water-absorbing agent in an absorbent material. A water-absorbing agent having excellent Gel Capillary Absorption (GCA) and Free Gel Bed Permeability (FGBP) is obtained by crushing a crosslinked hydrogel polymer obtained in a polymerization step to have a specific weight average particle diameter while fluid retention capacity and a surface tension of a water-absorbing agent are adjusted in a specific range, drying the crushed crosslinked hydrogel polymer, and then adding a liquid permeability enhancer thereto during surface crosslinking or after surface crosslinking.
    Type: Grant
    Filed: November 16, 2022
    Date of Patent: April 16, 2024
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Tsuyoshi Yorino, Daisuke Takeda, Yoshitaka Ikeuchi, Shigeru Sakamoto, Yoshihiro Shobo, Yoshifumi Adachi, Ryota Wakabayashi, Daisuke Takagi, Sachie Kitabata
  • Publication number: 20240117129
    Abstract: A structure according to an embodiment of the present disclosure includes: a plurality of nanoparticles or a plurality of nanofibers surface-coated with an amphipathic molecule or an organic silane molecule; and a cross-linking part that couples the plurality of nanoparticles or the plurality of nanofibers to each other.
    Type: Application
    Filed: December 16, 2021
    Publication date: April 11, 2024
    Inventor: Shigeru SAKAMOTO
  • Patent number: 11931290
    Abstract: An object of the present invention is to provide a water absorbent resin powder for a heat-generating element composition, which suppresses the generation of the aggregates derived from the water absorbent resin and the adhesion of the water absorbent resin in the production of a heat-generating element composition. A present inventive water absorbent resin powder for a heat-generating element composition includes polyacrylic acid (salt)-based water absorbent resin powder which have a bulk specific gravity (specified by JIS K3362) of 0.630 g/cm3 or less, fluid retention capacity without load (CRC) for a 0.9% by weight aqueous solution of sodium chloride (specified by ERT441.01-2) of 32.0 g/g or less, a weight-average particle diameter (specified by sieve classification) of 250 ?m or more, and an amount of a residual glycidyl-based crosslinking agent of 10 ppm or less.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: March 19, 2024
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Sachie Kitabata, Shigeru Sakamoto, Sumito Kumagai, Kozo Nogi, Kunihiko Ishizaki
  • Publication number: 20230097487
    Abstract: To provide a disposable diaper enabling reduction in re-wet amount and having an excellent speed of incorporating liquid regardless of concentration and configuration of a water-absorbing agent in an absorbent material. A water-absorbing agent having excellent Gel Capillary Absorption (GCA) and Free Gel Bed Permeability (FGBP) is obtained by crushing a crosslinked hydrogel polymer obtained in a polymerization step to have a specific weight average particle diameter while fluid retention capacity and a surface tension of a water-absorbing agent are adjusted in a specific range, drying the crushed crosslinked hydrogel polymer, and then adding a liquid permeability enhancer thereto during surface crosslinking or after surface crosslinking.
    Type: Application
    Filed: November 16, 2022
    Publication date: March 30, 2023
    Inventors: Tsuyoshi YORINO, Daisuke TAKEDA, Yoshitaka IKEUCHI, Shigeru SAKAMOTO, Yoshihiro SHOBO, Yoshifumi ADACHI, Ryota WAKABAYASHI, Daisuke TAKAGI, Sachie KITABATA
  • Patent number: 11535689
    Abstract: To provide a disposable diaper enabling reduction in re-wet amount and having an excellent speed of incorporating liquid regardless of concentration and configuration of a water-absorbing agent in an absorbent material. A water-absorbing agent having excellent Gel Capillary Absorption (GCA) and Free Gel Bed Permeability (FGBP) is obtained by crushing a crosslinked hydrogel polymer obtained in a polymerization step to have a specific weight average particle diameter while fluid retention capacity and a surface tension of a water-absorbing agent are adjusted in a specific range, drying the crushed crosslinked hydrogel polymer, and then adding a liquid permeability enhancer thereto during surface crosslinking or after surface crosslinking.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: December 27, 2022
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Tsuyoshi Yorino, Daisuke Takeda, Yoshitaka Ikeuchi, Shigeru Sakamoto, Yoshihiro Shobo, Yoshifumi Adachi, Ryota Wakabayashi, Daisuke Takagi, Sachie Kitabata
  • Patent number: 11485847
    Abstract: The present invention provides a methacrylic resin composition comprising 75 to 99.8 mass % of a methacrylic resin [A], 0.1 to 15 mass % of a UV absorber [B], and 0.1 to 10 mass % of a polymer [C] having an SP value of 6.0 to 9.7 (cal/cm3)1/2 calculated by the Fedors method.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: November 1, 2022
    Assignee: KURARAY CO., LTD.
    Inventors: Shigeru Sakamoto, Takuro Niimura, Taketomo Yamashita, Atsuhiro Nakahara
  • Publication number: 20220212995
    Abstract: Provided is an additive for concrete in which viscosity of a cement composition is low and fluidity is high at an initial stage of casting even when the additive is added, and long-term strength of concrete or the like improves by the addition. A cement additive comprising a water-absorbent resin, wherein the water-absorbent resin is formed by polymerizing a monomer mixture containing no less than 50 mol % of a nonionic non-crosslinkable monomer and no less than 0.1 mol % of a nonionic crosslinkable monomer, and a content of an anionic monomer in the monomer mixture is no more than 20 mol %.
    Type: Application
    Filed: March 24, 2020
    Publication date: July 7, 2022
    Inventors: Takeshi TAKAYAMA, Kunihiko ISHIZAKI, Shigeru SAKAMOTO
  • Patent number: 11225930
    Abstract: An engine includes a cylinder head, an intake manifold, and a partition wall. The cylinder head includes an intake port communicating with a combustion chamber. The intake manifold is fixed to the cylinder head and includes an intake passage communicating with the intake port. The partition wall that separates at least part of the intake port into a first channel and a second channel. The partition wall includes a partition wall member extending from the intake port to the intake passage and fixed to an inner wall of the intake port and an inner wall of the intake passage.
    Type: Grant
    Filed: June 11, 2020
    Date of Patent: January 18, 2022
    Assignee: SUBARU CORPORATION
    Inventors: Tetsu Naito, Shigeru Sakamoto
  • Publication number: 20210100684
    Abstract: An object of the present invention is to provide a water absorbent resin powder for a heat-generating element composition, which suppresses the generation of the aggregates derived from the water absorbent resin and the adhesion of the water absorbent resin in the production of a heat-generating element composition. A present inventive water absorbent resin powder for a heat-generating element composition includes polyacrylic acid (salt)-based water absorbent resin powder which have a bulk specific gravity (specified by JIS K3362) of 0.630 g/cm3 or less, fluid retention capacity without load (CRC) for a 0.9% by weight aqueous solution of sodium chloride (specified by ERT441.01-2) of 32.0 g/g or less, a weight-average particle diameter (specified by sieve classification) of 250 ?m or more, and an amount of a residual glycidyl-based crosslinking agent of 10 ppm or less.
    Type: Application
    Filed: December 21, 2018
    Publication date: April 8, 2021
    Inventors: Sachie KITABATA, Shigeru SAKAMOTO, Sumito KUMAGAI, Kozo NOGI, Kunihiko ISHIZAKI
  • Publication number: 20210095615
    Abstract: An engine includes a cylinder head, an intake manifold, and a partition wall. The cylinder head includes an intake port communicating with a combustion chamber. The intake manifold is fixed to the cylinder head and includes an intake passage communicating with the intake port. The partition wall that separates at least part of the intake port into a first channel and a second channel. The partition wall includes a partition wall member extending from the intake port to the intake passage and fixed to an inner wall of the intake port and an inner wall of the intake passage.
    Type: Application
    Filed: June 11, 2020
    Publication date: April 1, 2021
    Inventors: Tetsu NAITO, Shigeru SAKAMOTO
  • Publication number: 20210079207
    Abstract: The present invention provides a methacrylic resin composition comprising 75 to 99.8 mass % of a methacrylic resin [A], 0.1 to 15 mass % of a UV absorber [B], and 0.1 to 10 mass % of a polymer [C] having an SP value of 6.0 to 9.7 (cal/cm3)1/2 calculated by the Fedors method.
    Type: Application
    Filed: December 20, 2018
    Publication date: March 18, 2021
    Applicant: KURARAY CO., LTD.
    Inventors: Shigeru SAKAMOTO, Takuro NIMURA, Taketomo YAMASHITA, Atsuhiro NAKAHARA
  • Patent number: 10934031
    Abstract: A method for filling a particulate water absorbing agent includes a filling step of filling a particulate water absorbing agent into a filling container and a vibrating step of vibrating the filling container at the outside of the filling container, the vibrating step being conducted at least one time between the start and the end of the filling step, in which a vibration condition in the vibrating step satisfies the following conditions (a) and (b):(a) vibration by a vibrating body in contact with the filling container has a vertical directional component and a vibrational angle is within 90°±30°; and (b) total amplitude at no load and a vibration frequency at no load of the vibrating body are set so as to satisfy Equation 1-1 and Equation 2 or Equation 1-2 and Equation 2.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: March 2, 2021
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Kazushi Torii, Shigeru Sakamoto, Kenji Tada, Kazuki Kimura, Yusuke Watanabe
  • Patent number: 10696895
    Abstract: The present invention provides a novel acrylic acid crosslinked polymer and the use thereof. The present invention provides the acrylic acid crosslinked polymer in which the content of soluble components is 40 wt. % or higher. The present invention also provides a method for adjusting the viscosity of a fracturing fluid in a hydraulic fracturing method, the viscosity adjustment method including: A) a step of measuring the types and quantities of metal cations which are in water and which are the object of viscosity adjustment; B) a step of selecting the type and quantity of an acrylic acid crosslinked polymer on the basis of the types and quantities of metal cations and the pH so as to achieve a viscosity that is required for fracturing in a hydraulic fracturing method; and C) a step of adjusting the viscosity of the fracturing fluid using the acrylic acid crosslinked polymer of the selected type and quantity.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: June 30, 2020
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Shigeru Sakamoto, Kozo Nogi, Tomoyuki Arake, Erina Minami, Shinichi Fujino
  • Patent number: 10640588
    Abstract: Disclosed are a polyacrylate (salt) and a polyacrylate (salt) water-absorbent resin containing a tracer which can be verified back to the manufacturing process of the water-absorbent resin when dealing with various problems with the water-absorbent resin which can occur from the manufacturing process of the water-resistant resin, during the use thereof by a consumer, up until the disposal thereof. The disclosed polyacrylate (salt) and the polyacrylate (salt) water-absorbent resin have a carbon stable isotope ratio (?13C) of at least ?20‰ when measured by accelerator mass spectrometry.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: May 5, 2020
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Satoshi Matsumoto, Yuki Kabeya, Kunihiko Ishizaki, Shigeru Sakamoto
  • Patent number: 10624983
    Abstract: Provided is a water absorbent resin that is useful to sanitary materials such as a disposable diaper, a sanitary napkin, and a blood absorbent for medical use each having a higher liquid permeability and a higher water absorbing speed. Further provided is a water absorbent resin powder that is useful to sanitary materials such as a disposable diaper, a sanitary napkin, and a blood absorbent for medical use each having increased in absorbency of a liquid and in heat retaining property. A gel grinding device to be used to produce a water absorbent resin, includes: a screw; a feed opening; an extrusion opening; a porous plate; and a barrel, the barrel including a return preventing member provided on an inner surface thereof, and the return preventing member satisfying at least one of specific parameters.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: April 21, 2020
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Kazushi Torii, Kohei Omori, Nobuya Tanaka, Shigeru Sakamoto, Kenji Tada, Hironori Sato
  • Patent number: 10577135
    Abstract: An object of the invention is to provide a technique in which a decrease in physical properties is suppressed or consumer complaints are diminished. A method includes a filling step of filling a particulate water absorbing agent into a filling container and a vibrating step of vibrating the filling container at the outside of the filling container, the vibrating step being conducted at least one time between the start and the end of the filling step. A vibration condition in the vibrating step satisfies the following conditions: (a) vibration by a vibrating body in contact with the filling container has a vertical directional component and a vibrational angle is within 90°±30°; and (b) total amplitude at no load and a vibration frequency at no load of the vibrating body are set so as to satisfy Equation 1-1 and Equation 2 or Equation 1-2 and Equation 2.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: March 3, 2020
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Kazushi Torii, Shigeru Sakamoto, Kenji Tada, Kazuki Kimura, Yusuke Watanabe
  • Patent number: 10566567
    Abstract: A display device includes a thin film transistor; a first organic insulating film covering the thin film transistor and containing a resin material; an inorganic insulating film on the first organic insulating film; a pixel electrode electrically connected with the thin film transistor; a second organic insulating film covering an end of the pixel electrode and exposing a top surface of the pixel electrode; and an organic layer provided on the top surface of the pixel electrode and including a light emitting layer. As seen in a plan view, the inorganic insulating film has an opening, overlapping the second organic insulating film, at a position not overlapping an opening provided in the first organic insulating film. The first and second organic insulating films face each other in the opening in the inorganic insulating film, with an oxide conductive film being between the first and second organic insulating films.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: February 18, 2020
    Assignee: Japan Display Inc.
    Inventors: Yasukazu Kimura, Shigeru Sakamoto
  • Patent number: 10566578
    Abstract: A display device includes a first substrate, a coloring layer formed on the first substrate, a transparent insulating layer having a first refractive index formed on the coloring layer, a first transparent electrode having a higher second refractive index than the first refractive index formed on the transparent insulating layer, an organic layer having a light emitting layer formed on the first transparent electrode, and a second transparent electrode formed on the organic layer.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: February 18, 2020
    Assignee: Japan Display Inc.
    Inventors: Shigeru Sakamoto, Hajime Akimoto
  • Publication number: 20200031503
    Abstract: An object of the invention is to provide a technique in which a decrease in physical properties is suppressed or consumer complaints are diminished. A method for filling a particulate water absorbing agent includes a filling step of filling a particulate water absorbing agent into a filling container and a vibrating step of vibrating the filling container at the outside of the filling container, the vibrating step being conducted at least one time between the start and the end of the filling step, in which a vibration condition in the vibrating step satisfies the following conditions (a) and (b): (a) vibration by a vibrating body in contact with the filling container has a vertical directional component and a vibrational angle is within 90°±30°; and (b) total amplitude at no load and a vibration frequency at no load of the vibrating body are set so as to satisfy Equation 1-1 and Equation 2 or Equation 1-2 and Equation 2.
    Type: Application
    Filed: October 3, 2019
    Publication date: January 30, 2020
    Inventors: Kazushi TORII, Shigeru SAKAMOTO, Kenji TADA, Kazuki KIMURA, Yusuke WATANABE