Patents by Inventor Nobuaki Sato

Nobuaki Sato 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: 20250051322
    Abstract: Crystals of compounds represented by formula (I) having potential as drug substances for pharmaceuticals, as well as salts of compounds represented by formula (I) and their crystals.
    Type: Application
    Filed: January 12, 2023
    Publication date: February 13, 2025
    Inventors: Ikuo Kushida, Yoko Ito, So Yasui, Takashi Fukuyama, Nobuaki Sato, Taro Asaba
  • Publication number: 20250035967
    Abstract: An optical modulator includes an electro-optic layer including an electro-optic material, and a material layer arranged below the electro-optic layer and having a dielectric constant lower than a dielectric constant of the electro-optic layer. The optical modulator includes a core layer arranged below the material layer and having a refractive index higher than refractive indices of the electro-optic layer and the material layer, and an electrode that applies an electric signal to the electro-optic layer. The refractive index of the material layer is 0.85 times the refractive index of the electro-optic layer or higher.
    Type: Application
    Filed: June 25, 2024
    Publication date: January 30, 2025
    Applicant: FUJITSU OPTICAL COMPONENTS LIMITED
    Inventors: Kazumasa SATO, Nobuaki MITAMURA
  • Patent number: 11884806
    Abstract: A resin composition contains an ethylene-vinyl alcohol copolymer, wherein the ratio (Y/Z) of a lactone ring content (Y) to the sum (Z) of a carboxylic acid content (X) and the lactone ring content (Y) in terminal structures of the ethylene-vinyl alcohol copolymer is not less than 55 mol %, and at least one of a cinnamic acid component, a lubricant, a boron compound, and a conjugated polyene compound is present as a thermally stabilizing substance in a predetermined proportion based on the weight of the resin composition. Therefore, the resin composition is excellent in high-temperature thermal decomposition suppressing effect and thermal stability, and is free from odor emanation and coloration even if being processed at a higher temperature.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: January 30, 2024
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Kota Inoue, Honoka Hashimoto, Nobuaki Sato
  • Patent number: 11420980
    Abstract: Salts of the compound represented by formula (I) or crystals thereof have a potential use as drug substances for pharmaceuticals.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: August 23, 2022
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Kenshi Yoshida, Yoshiaki Ohashi, Tamaki Hoshikawa, Nobuaki Sato, Ikuo Kushida
  • Patent number: 11401355
    Abstract: An ethylene-vinyl alcohol copolymer has an ethylene content of 20 to 60 mol % and includes a carboxylic acid group and a lactone ring group present at terminals thereof, wherein the molar concentration (Y/Z) of a lactone ring molar content (Y) to a sum (Z) of a carboxylic acid molar content (X) and the lactone ring molar content (Y) is not less than 58 mol %. The ethylene-vinyl alcohol copolymer is excellent in high-temperature thermal stability substantially without thermal decomposition, and is free from odor emanation and coloration even if being processed at a higher temperature.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: August 2, 2022
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Tomonori Yoshida, Nobuaki Sato, Masahiko Taniguchi
  • Patent number: 11358972
    Abstract: The present invention provides compounds represented by formulas (I) to (XVII) or pharmaceutically acceptable salts thereof:
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: June 14, 2022
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Yoshiaki Ohashi, Yoshihiko Norimine, Tamaki Hoshikawa, Yu Yoshida, Yoshihisa Kobayashi, Nobuhiro Sato, Koji Hagiwara, Nobuaki Sato, Shinsuke Hirota, Takaaki Harada, Hikaru Yoshimura
  • Patent number: 11292860
    Abstract: Ethylene-vinyl alcohol copolymer pellets comprise an ethylene-vinyl alcohol copolymer and water, and have a water content of not higher than 0.5 wt. %, wherein the ratio (Y/Z) of a lactone ring content (Y) to the sum (Z) of a carboxylic acid content (X) and the lactone ring content (Y) in terminal structures of the ethylene-vinyl alcohol copolymer is not less than 60 mol %. The pellets are excellent in high-temperature thermal decomposition-suppressing effect and thermal stability, and are free from odor emanation and coloration even if being processed at a higher temperature.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: April 5, 2022
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Kota Inoue, Honoka Hashimoto, Nobuaki Sato
  • Patent number: 11267821
    Abstract: The present invention provides compounds represented by formulas (I) to (XVII) or pharmaceutically acceptable salts thereof:
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: March 8, 2022
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Yoshiaki Ohashi, Yoshihiko Norimine, Tamaki Hoshikawa, Yu Yoshida, Yoshihisa Kobayashi, Nobuhiro Sato, Koji Hagiwara, Nobuaki Sato, Shinsuke Hirota, Takaaki Harada, Hikaru Yoshimura
  • Patent number: 11225537
    Abstract: The present invention provides an ethylene-vinyl alcohol copolymer which can be melt-molded at lower temperatures than conventional ethylene-vinyl alcohol copolymers to give molded objects that are inhibited from suffering undesirable coloration or having fish-eyes and that have excellent gas barrier properties. The ethylene-vinyl alcohol copolymer of the invention has a carboxylic acid ester group at a polymer terminal.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: January 18, 2022
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Nobuaki Sato
  • Patent number: 11161970
    Abstract: The purpose of the present invention is to provide: an EVOH resin-based composition (pellet) which has a desired melt viscosity without increasing the boron content, thereby being effective for surging prevention; and a method for producing the resin composition. The EVOH-based resin composition contains a boric acid compound and the boric acid compound contains tetracoordinated boron. An EVOH-based resin paste containing a boric acid compounds is brought into contact with an aqueous solution containing a boric acid compound and alkali metal salt at an elevated temperature and an elevated pressure so that the amount of alkali metal salt is from 300 to 1000 ppm based on the EVOH-based resin paste, thereby converting the boron of the boric acid compound to tetracoordinated structure.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: November 2, 2021
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Nobuaki Sato, Taiji Kanda, Ayano Nakashima
  • Publication number: 20210024541
    Abstract: Salts of the compound represented by formula (I) or crystals thereof have a potential use as drug substances for pharmaceuticals.
    Type: Application
    Filed: September 15, 2020
    Publication date: January 28, 2021
    Applicant: Eisai R&D Management Co., Ltd.
    Inventors: Kenshi Yoshida, Yoshiaki Ohashi, Tamaki Hoshikawa, Nobuaki Sato, Ikuo Kushida
  • Patent number: 10903146
    Abstract: [Problem] To provide an electrode connection structure and the like in which a plurality of elongated leads are arranged in parallel and a longitudinal side surface of each lead is connected to an electrode by plating treatment with high quality. [Solution] An electrode connection structure in which a semiconductor chip 12 electrode and/or a substrate electrode is connected to a plurality of elongated leads 11 of a lead frame 10 by plating. The plurality of elongated leads 11 of the lead frame 10 are arranged in parallel, and a longitudinal side surface of each lead 11 is connected to the semiconductor chip 12 electrode and/or the substrate electrode by plating.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: January 26, 2021
    Assignees: WASEDA UNIVERSITY, MITSUI HIGH-TEC, INC.
    Inventors: Kohei Tatsumi, Kazutoshi Ueda, Nobuaki Sato, Koji Shimizu
  • Patent number: 10858685
    Abstract: Provided is a method for industrially mass-producing a modified xylopolysaccharide from biomass. The biomass used as a raw material includes xylan in plant cell walls, having at least one kind of substituents selected from acetyl, feruloyl arabinofuranosyl and coumaroyl arabinofuranosyl groups in the side chains of xylan. A passage controlling mechanism is internally arranged to generate plug-flow onto a slurry containing the biomass at a solid content in 10 mass % to 30 mass %. The hydrothermal treatment is performed under the controlled conditions: at a temperature of 160° C. or more, at a pressure equal to or higher than the saturated water vapor pressure at said temperature, and with a reaction severity R0 ranging from 3000 to 7000. A modified xylopolysaccharide is obtained as preserving the substituents in the side chains of xylan by performing a continuous hydrothermal treatment in a cylindrical plug-flow reactor.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: December 8, 2020
    Assignees: B Food Science Co., Ltd., Kimura Chemical Plants Co., Ltd.
    Inventors: Satoshi Makishima, Hirofumi Ikeda, Yousuke Yamakawa, Yoshihiko Amano, Nobuaki Sato, Tsutomu Arai
  • Patent number: 10858498
    Abstract: An ethylene-vinyl alcohol copolymer resin composition pellet group is provided, which is excellent in long-run processability. The ethylene-vinyl alcohol copolymer resin composition pellet group is a group of pellets of an ethylene-vinyl alcohol copolymer resin composition containing an ethylene-vinyl alcohol copolymer and a divalent metal salt, wherein not greater than 3% of the pellets have a b*-value of not less than 5 after the pellets are heat-treated at 230° C. for 30 minutes.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: December 8, 2020
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Ayano Nakashima, Takamichi Tanabe, Nobuaki Sato, Eisaku Yokoya, Seiichi Honda, Kaoru Inoue
  • Publication number: 20200283452
    Abstract: The present invention provides compounds represented by formulas (I) to (XVII) or pharmaceutically acceptable salts thereof:
    Type: Application
    Filed: March 3, 2020
    Publication date: September 10, 2020
    Inventors: Yoshiaki Ohashi, Yoshihiko Norimine, Tamaki Hoshikawa, Yu Yoshida, Yoshihisa Kobayashi, Nobuhiro Sato, Koji Hagiwara, Nobuaki Sato, Shinsuke Hirota, Takaaki Harada, Hikaru Yoshimura
  • Patent number: 10738184
    Abstract: Provided is an EVOH resin pellet which is capable of reducing the occurrence of fish eyes in a melt molded article of an EVOH resin. The occurrence of fish eyes in a melt molded article such as a film that is produced by melt molding using pellets is able to be suppressed by setting the abundance of a conjugated polyene in a surface portion of the pellet to an intended amount or more.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: August 11, 2020
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Ryuta Seno, Shinichi Hori, Nobuaki Sato
  • Patent number: 10676605
    Abstract: An ethylene-vinyl alcohol copolymer composition can be formed into a product having very few minute fisheyes. The ethylene-vinyl alcohol copolymer composition comprises: an ethylene-vinyl alcohol copolymer; and an iron compound; wherein the ethylene-vinyl alcohol copolymer is a saponification product of an ethylene-vinyl ester copolymer prepared by using an organic compound having a half-life of 10 to 300 minutes at 60° C. as a polymerization initiator; wherein an amount of the iron compound is 0.001 to 2 ppm in terms of a metal by weight of the ethylene-vinyl alcohol copolymer composition.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: June 9, 2020
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Nobuaki Sato, Koji Yamada
  • Patent number: 10626197
    Abstract: An object of the invention is to provide an EVOH which has improved melt moldability and is excellent in terms of gas barrier property and secondary formability. The present invention relates to an ethylene-vinyl alcohol copolymer that, when examined by liquid chromatography, gives an ethylene content distribution curve which has at least two peaks and in which the ethylene content (a) of a component that shows a highest peak (A), the ethylene content (b) of a component that shows a second highest peak (B), and the proportion (v) and distribution of component(s) (V) having ethylene contents (w) corresponding to specific regions (W) are within specific ranges.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: April 21, 2020
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Kazuki Kawamoto, Takashi Suzuki, Nobuaki Sato, Koji Yamada
  • Publication number: 20190300632
    Abstract: Ethylene-vinyl alcohol copolymer pellets comprise an ethylene-vinyl alcohol copolymer and water, and have a water content of not higher than 0.5 wt. %, wherein the ratio (Y/Z) of a lactone ring content (Y) to the sum (Z) of a carboxylic acid content (X) and the lactone ring content (Y) in terminal structures of the ethylene-vinyl alcohol copolymer is not less than 60 mol %. The pellets are excellent in high-temperature thermal decomposition-suppressing effect and thermal stability, and are free from odor emanation and coloration even if being processed at a higher temperature.
    Type: Application
    Filed: June 7, 2019
    Publication date: October 3, 2019
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Kota INOUE, Honoka HASHIMOTO, Nobuaki SATO
  • Publication number: 20190292359
    Abstract: A resin composition contains an ethylene-vinyl alcohol copolymer, wherein the ratio (Y/Z) of a lactone ring content (Y) to the sum (Z) of a carboxylic acid content (X) and the lactone ring content (Y) in terminal structures of the ethylene-vinyl alcohol copolymer is not less than 55 mol %, and at least one of a cinnamic acid component, a lubricant, a boron compound, and a conjugated polyene compound is present as a thermally stabilizing substance in a predetermined proportion based on the weight of the resin composition. Therefore, the resin composition is excellent in high-temperature thermal decomposition suppressing effect and thermal stability, and is free from odor emanation and coloration even if being processed at a higher temperature.
    Type: Application
    Filed: June 5, 2019
    Publication date: September 26, 2019
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kota INOUE, Honoka HASHIMOTO, Nobuaki SATO