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: 20220218098
    Abstract: Provided is a polyester-based monofilament for a toothbrush, the monofilament having exceptional flexibility (usage feel), durability (bristle breaking resistance), and restoration properties (bristle opening resistance). The present invention relates to: a polyester-based monofilament for a toothbrush, the monofilament being characterized in that polytrimethylene terephthalate (PTT) and polybutylene terephthalate (PBT) are mixed at a proportion ranging from 85/15 to 65/35 in terms of weight ratio, and the shrinkage in boiling water is less than 1.0%; and a toothbrush in which the aforementioned polyester-based monofilament for a toothbrush is used in an erected bristle section.
    Type: Application
    Filed: August 21, 2019
    Publication date: July 14, 2022
    Applicant: Asahi Kasei Advance Corporation
    Inventors: Shigeru Morita, Akihiro Saito, Haruka Sakamoto
  • 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: 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
  • 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
  • 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
  • Patent number: 10541385
    Abstract: A display device according to an embodiment of the present invention includes: a substrate; an organic light-emitting diode provided for each pixel on the substrate; an insulating layer that is formed along a boundary of the pixel and has an opening portion in a light-emitting region of the pixel; a first refractive index layer; and a second refractive index layer. The first refractive index layer is disposed on the insulating layer and the organic light-emitting diode, is made of a material having a first refractive index, and has a first recessed portion overlapping with a formation region of the insulating layer in plan view. The second refractive index layer is disposed inside the first recessed portion and is made of a material having a second refractive index lower than the first refractive index.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: January 21, 2020
    Assignee: Japan Display Inc.
    Inventor: Shigeru Sakamoto
  • Publication number: 20190359358
    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: August 6, 2019
    Publication date: November 28, 2019
    Inventors: Kazushi TORII, Shigeru SAKAMOTO, Kenji TADA, Kazuki KIMURA, Yusuke WATANABE
  • Patent number: 10434495
    Abstract: An object of the present invention is to provide a method for producing water absorbent resin powder in which permeability potential (SFC) is improved while a water absorbing rate (FSR) is being kept. The method is a method for producing water absorbent polyacrylic acid (salt) resin powder including the steps of: (i) polymerizing an acrylic acid (salt) monomer aqueous solution; (ii) during or after the step of (i), performing gel grinding of a hydrogel crosslinked polymer obtained by the polymerization, wherein the hydrogel crosslinked polymer has resin solid content of 10 wt % to 80 wt %, and the gel grinding is carried out with gel grinding energy (GGE) of 18 [J/g] to 60 [J/g]; (iii) drying a particulate hydrogel crosslinked polymer obtained by the gel grinding, wherein the drying is performed at 150° C. to 250° C.; and (iv) carrying out a surface treatment to the particulate hydrogel crosslinked polymer thus dried.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: October 8, 2019
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Sayaka Machida, Kazushi Torii, Yoko Shirai, Hiroyuki Ikeuchi, Shigeru Sakamoto, Koji Tachi, Reiko Nakatsuru
  • Patent number: 10439157
    Abstract: A display device includes an organic electroluminescence layer including a plurality of emission layers respectively emitting light of a plurality of colors, and a reflective layer configured to reflect the light emitted from the emission layers. A shortest optical path length between the emission layers and the reflective layer is longer than at least three times of a wavelength of blue light.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: October 8, 2019
    Assignee: Japan Display Inc.
    Inventor: Shigeru Sakamoto
  • Publication number: 20190275192
    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: Application
    Filed: May 29, 2019
    Publication date: September 12, 2019
    Inventors: Kazushi TORII, Kohei OMORI, Nobuya TANAKA, Shigeru SAKAMOTO, Kenji TADA, Hironori SATO
  • Patent number: 10406256
    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: August 28, 2014
    Date of Patent: September 10, 2019
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Kazushi Torii, Kohei Omori, Nobuya Tanaka, Shigeru Sakamoto, Kenji Tada, Hironori Sato