Patents by Inventor Takayuki Hirai

Takayuki Hirai 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: 12124198
    Abstract: An image forming method includes: forming a toner image on a sheet by using a toner including a first binder resin; and applying, to the toner image, a fixing solution capable of softening the first binder resin so as to fix the toner image to the sheet. The first binder resin is a condensate of a first alcohol component and a first carboxylic acid component. The first alcohol component contains 1,4-butanediol, and the first carboxylic acid component contains polyvalent carboxylic acid. A molar ratio of the 1,4-butanediol in the first alcohol component is not less than 30 mol %.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: October 22, 2024
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Takayuki Higuchi, Kumiko Sakaguchi, Beibei Yang, Norihiro Hirai
  • Publication number: 20240310648
    Abstract: A stereoscopic display apparatus having high display performance independently of a temperature environment is provided. A stereoscopic display apparatus of the present disclosure includes a display panel and a lens array unit. The display panel includes a display surface in which multiple display pixels are arranged. The lens array unit is disposed to be opposed to the display surface of the display panel. The lens array unit includes a stacked structure. The stacked structure includes a resin lens array and a buffer layer. The resin lens array has a first coefficient of thermal expansion within a first range that includes a coefficient of thermal expansion of glass. The buffer layer has a second coefficient of thermal expansion higher than the first coefficient of thermal expansion.
    Type: Application
    Filed: January 14, 2022
    Publication date: September 19, 2024
    Inventors: NORIYUKI HIRAI, TOMOYA YANO, TAKAYUKI KURIHARA
  • Patent number: 12076923
    Abstract: A three-dimensional shaping device includes: an ejection head including a nozzle configured to eject a binder containing water, a water-soluble resin, and a wetting agent, an individual liquid chamber communicating with the nozzle, an inflow path configured to flow the binder into the individual liquid chamber, and an outflow path configured to flow the binder out of the individual liquid chamber; and a circulation flow path configured to circulate the binder flowing out of the outflow path to the inflow path.
    Type: Grant
    Filed: February 23, 2022
    Date of Patent: September 3, 2024
    Assignee: Seiko Epson Corporation
    Inventors: Eiji Okamoto, Toshimitsu Hirai, Kaoru Momose, Takayuki Yokoyama
  • Publication number: 20240279944
    Abstract: Provided is a hatch for a capsule unit which opens and closes an opening of a capsule unit for sleeping. The hatch comprises: one plate-shaped member configured to cover the whole of the opening; and an inward opening mechanism that supports the plate-shaped member so as to be movable between a position at which the plate-shaped member is accommodated inside the capsule unit so that the opening is in an open state and a position at which the plate-shaped member covers the whole of the opening so that the opening is in a closed state.
    Type: Application
    Filed: July 22, 2022
    Publication date: August 22, 2024
    Inventors: Yugo HIRAI, Yusuke ASHIDA, Takayuki SUSAKI, Jun KOMINE, Katsuya AONUMA
  • Patent number: 11492149
    Abstract: A multi-layer insulation includes a plurality of layers that are laminated on each other. A detection layer that is at least one of the plurality of layers has a piezoelectric film, and a pair of electrode parts installed on both surfaces of the piezoelectric film.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: November 8, 2022
    Inventors: Takayuki Hirai, Hajime Yano
  • Patent number: 11365295
    Abstract: A fiber-reinforced resin composition includes a polyamide resin and a polyolefin resin, and when one resin between the polyamide resin and the polyolefin resin is set as a first resin, and the other resin is set as a second resin, the composition has a sea-island structure including a continuous phase C consisting of the first resin and a dispersed phase c consisting of the second resin dispersed in the continuous phase C, and in a resin phase separation cross-sectional structure, a total of cross-sectional areas of dispersed phases having a cross-sectional area equal to or smaller than an average cross-sectional area of the reinforcing fiber is 20% or less with respect to a total of cross-sectional areas of all dispersed phases.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: June 21, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takayuki Hirai, Kenzo Fukumori, Tetsuya Oda, Takayuki Nagai
  • Patent number: 11124414
    Abstract: The present invention provides a hydrogen peroxide production method and a hydrogen peroxide production kit that are capable of producing hydrogen peroxide more efficiently and at lower costs than conventional methods. Specifically, the present invention provides a hydrogen peroxide production method comprising: (1) a hydrogen peroxide generation step of generating hydrogen peroxide by irradiating a reaction system containing water, an organic polymer photocatalyst, and O2 with light, wherein (2) the organic polymer photocatalyst comprises an organic polymer having a structure such that a monocyclic or polycyclic aromatic compound and/or a monocyclic or polycyclic heteroaromatic compound is/are linked by a bridging group, and (3) the organic polymer has a band structure such that a conduction band (CB) has a potential lower than the potential of two-electron reduction of O2, and a valance band (VB) has a potential higher than the potential of four-electron oxidation of water.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: September 21, 2021
    Assignee: OSAKA UNIVERSITY
    Inventors: Yasuhiro Shiraishi, Takayuki Hirai
  • Patent number: 11114215
    Abstract: An object of the present disclosure is to provide a core electric wire for a multi-core cable that is superior in flex resistance at low temperature, and a multi-core cable employing the same. A core electric wire for a multi-core cable according to an aspect of the present disclosure comprises a conductor obtained by twisting element wires, and an insulating layer covering the conductor, wherein a linear expansion coefficient C of the insulating layer at from 25° C. to ?35° C. is no less than 1×10?5 K?1 and no greater than 2.5×10?4 K?1.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: September 7, 2021
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shigeyuki Tanaka, Shinya Nishikawa, Hiroyuki Okawa, Takaya Kohori, Yuhei Mayama, Takayuki Hirai
  • Patent number: 10964452
    Abstract: Provided are a core electric wire for multi-core cable that is superior in flex resistance at low temperature, and a multi-core cable employing the same. A core electric wire for multi-core cable according to an aspect of the present invention comprises a conductor obtained by twisting element wires, and an insulating layer that covers an outer periphery of the conductor, in which, in a transverse cross section of the conductor, a percentage of an area occupied by void regions among the element wires is from 5% to 20%. An average area of the conductor in the transverse cross section is preferably from 1.0 mm2 to 3.0 mm2. An average diameter of the element wires in the conductor is preferably from 40 ?m to 100 ?m, and the number of the element wires is preferably from 196 to 2,450. The conductor is preferably obtained by twisting stranded element wires obtained by twisting subsets of element wires.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: March 30, 2021
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shigeyuki Tanaka, Shinya Nishikawa, Hiroyuki Okawa, Takaya Kohori, Yuhei Mayama, Takayuki Hirai
  • Publication number: 20200273606
    Abstract: Provided are a core electric wire for multi-core cable that is superior in flex resistance at low temperature, and a multi-core cable employing the same. A core electric wire for multi-core cable according to an aspect of the present invention comprises a conductor obtained by twisting element wires, and an insulating layer that covers an outer periphery of the conductor, in which, in a transverse cross section of the conductor, a percentage of an area occupied by void regions among the element wires is from 5% to 20%. An average area of the conductor in the transverse cross section is preferably from 1.0 mm2 to 3.0 mm2. An average diameter of the element wires in the conductor is preferably from 40 ?m to 100 ?m, and the number of the element wires is preferably from 196 to 2,450. The conductor is preferably obtained by twisting stranded element wires obtained by twisting subsets of element wires.
    Type: Application
    Filed: April 30, 2020
    Publication date: August 27, 2020
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shigeyuki TANAKA, Shinya NISHIKAWA, Hiroyuki OKAWA, Takaya KOHORI, Yuhei MAYAMA, Takayuki HIRAI
  • Patent number: 10699824
    Abstract: Provided are a core electric wire for multi-core cable that is superior in flex resistance at low temperature, and a multi-core cable employing the same. A core electric wire for multi-core cable according to an aspect of the present invention comprises a conductor obtained by twisting element wires, and an insulating layer that covers an outer periphery of the conductor, in which, in a transverse cross section of the conductor, a percentage of an area occupied by void regions among the element wires is from 5% to 20%. An average area of the conductor in the transverse cross section is preferably from 1.0 mm2 to 3.0 mm2. An average diameter of the element wires in the conductor is preferably from 40 ?m to 100 ?m, and the number of the element wires is preferably from 196 to 2,450. The conductor is preferably obtained by twisting stranded element wires obtained by twisting subsets of element wires.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: June 30, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shigeyuki Tanaka, Shinya Nishikawa, Hiroyuki Okawa, Takaya Kohori, Yuhei Mayama, Takayuki Hirai
  • Patent number: 10699825
    Abstract: Provided are a core electric wire for multi-core cable that is superior in flex resistance at low temperature, and a multi-core cable employing the same. A core electric wire for multi-core cable according to an aspect of the present invention comprises a conductor obtained by twisting element wires, and an insulating layer that covers an outer periphery of the conductor, in which, in a transverse cross section of the conductor, a percentage of an area occupied by void regions among the element wires is from 5% to 20%. An average area of the conductor in the transverse cross section is preferably from 1.0 mm2 to 3.0 mm2. An average diameter of the element wires in the conductor is preferably from 40 ?m to 100 ?m, and the number of the element wires is preferably from 196 to 2,450. The conductor is preferably obtained by twisting stranded element wires obtained by twisting subsets of element wires.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: June 30, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shigeyuki Tanaka, Shinya Nishikawa, Hiroyuki Okawa, Takaya Kohori, Yuhei Mayama, Takayuki Hirai
  • Publication number: 20200048089
    Abstract: The present invention provides a hydrogen peroxide production method and a hydrogen peroxide production kit that are capable of producing hydrogen peroxide more efficiently and at lower costs than conventional methods. Specifically, the present invention provides a hydrogen peroxide production method comprising: (1) a hydrogen peroxide generation step of generating hydrogen peroxide by irradiating a reaction system containing water, an organic polymer photocatalyst, and O2 with light, wherein (2) the organic polymer photocatalyst comprises an organic polymer having a structure such that a monocyclic or polycyclic aromatic compound and/or a monocyclic or polycyclic heteroaromatic compound is/are linked by a bridging group, and (3) the organic polymer has a band structure such that a conduction band (CB) has a potential lower than the potential of two-electron reduction of O2, and a valance band (VB) has a potential higher than the potential of four-electron oxidation of water.
    Type: Application
    Filed: October 17, 2017
    Publication date: February 13, 2020
    Applicant: OSAKA UNIVERSITY
    Inventors: Yasuhiro Shiraishi, Takayuki Hirai
  • Publication number: 20190367689
    Abstract: A fiber-reinforced resin composition includes a polyamide resin and a polyolefin resin, and when one resin between the polyamide resin and the polyolefin resin is set as a first resin, and the other resin is set as a second resin, the composition has a sea-island structure including a continuous phase C consisting of the first resin and a dispersed phase c consisting of the second resin dispersed in the continuous phase C, and in a resin phase separation cross-sectional structure, a total of cross-sectional areas of dispersed phases having a cross-sectional area equal to or smaller than an average cross-sectional area of the reinforcing fiber is 20% or less with respect to a total of cross-sectional areas of all dispersed phases.
    Type: Application
    Filed: April 18, 2019
    Publication date: December 5, 2019
    Inventors: Takayuki HIRAI, Kenzo FUKUMORI, Tetsuya ODA, Takayuki NAGAI
  • Publication number: 20190318847
    Abstract: Provided are a core electric wire for multi-core cable that is superior in flex resistance at low temperature, and a multi-core cable employing the same. A core electric wire for multi-core cable according to an aspect of the present invention comprises a conductor obtained by twisting element wires, and an insulating layer that covers an outer periphery of the conductor, in which, in a transverse cross section of the conductor, a percentage of an area occupied by void regions among the element wires is from 5% to 20%. An average area of the conductor in the transverse cross section is preferably from 1.0 mm2 to 3.0 mm2. An average diameter of the element wires in the conductor is preferably from 40 ?m to 100 ?m, and the number of the element wires is preferably from 196 to 2,450. The conductor is preferably obtained by twisting stranded element wires obtained by twisting subsets of element wires.
    Type: Application
    Filed: June 26, 2019
    Publication date: October 17, 2019
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shigeyuki TANAKA, Shinya NISHIKAWA, Hiroyuki OKAWA, Takaya KOHORI, Yuhei MAYAMA, Takayuki HIRAI
  • Publication number: 20190318846
    Abstract: Provided are a core electric wire for multi-core cable that is superior in flex resistance at low temperature, and a multi-core cable employing the same. A core electric wire for multi-core cable according to an aspect of the present invention comprises a conductor obtained by twisting element wires, and an insulating layer that covers an outer periphery of the conductor, in which, in a transverse cross section of the conductor, a percentage of an area occupied by void regions among the element wires is from 5% to 20%. An average area of the conductor in the transverse cross section is preferably from 1.0 mm2 to 3.0 mm2. An average diameter of the element wires in the conductor is preferably from 40 ?m to 100 ?m, and the number of the element wires is preferably from 196 to 2,450. The conductor is preferably obtained by twisting stranded element wires obtained by twisting subsets of element wires.
    Type: Application
    Filed: June 26, 2019
    Publication date: October 17, 2019
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shigeyuki TANAKA, Shinya NISHIKAWA, Hiroyuki OKAWA, Takaya KOHORI, Yuhei MAYAMA, Takayuki HIRAI
  • Patent number: 10418150
    Abstract: A core electric wire for a multi-core cable according to an aspect of the present invention comprises a conductor obtained by twisting element wires, and an insulating layer covering the conductor, a principal component of the insulating layer being a copolymer of ethylene and an ?-olefin having a carbonyl group; the ?-olefin content in the copolymer being 14% to 46% by mass; and a mathematical product C*E being 0.01 to 0.9, wherein C is a linear expansion coefficient of the insulating layer at from 25° C. to ?35° C., and E is a modulus of elasticity thereof at ?35° C. Average area of the conductor in the transverse cross section is 1.0 to 3.0 mm2. Average diameter of the element wires in the conductor is 40 to 100 ?m, and number of the element wires is 196 to 2,450.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: September 17, 2019
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shigeyuki Tanaka, Shinya Nishikawa, Hiroyuki Okawa, Takaya Kohori, Yuhei Mayama, Takayuki Hirai
  • Patent number: 10388433
    Abstract: Provided are a core electric wire for multi-core cable that is superior in flex resistance at low temperature, and a multi-core cable employing the same. A core electric wire for multi-core cable according to an aspect of the present invention comprises a conductor obtained by twisting element wires, and an insulating layer that covers an outer periphery of the conductor, in which, in a transverse cross section of the conductor, a percentage of an area occupied by void regions among the element wires is from 5% to 20%. An average area of the conductor in the transverse cross section is preferably from 1.0 mm2 to 3.0 mm2. An average diameter of the element wires in the conductor is preferably from 40 ?m to 100 ?m, and the number of the element wires is preferably from 196 to 2,450. The conductor is preferably obtained by twisting stranded element wires obtained by twisting subsets of element wires.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: August 20, 2019
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shigeyuki Tanaka, Shinya Nishikawa, Hiroyuki Okawa, Takaya Kohori, Yuhei Mayama, Takayuki Hirai
  • Patent number: 10388432
    Abstract: Provided are a core electric wire for multi-core cable that is superior in flex resistance at low temperature, and a multi-core cable employing the same. A core electric wire for multi-core cable according to an aspect of the present invention comprises a conductor obtained by twisting element wires, and an insulating layer that covers an outer periphery of the conductor, in which, in a transverse cross section of the conductor, a percentage of an area occupied by void regions among the element wires is from 5% to 20%. An average area of the conductor in the transverse cross section is preferably from 1.0 mm2 to 3.0 mm2. An average diameter of the element wires in the conductor is preferably from 40 ?m to 100 ?m, and the number of the element wires is preferably from 196 to 2,450. The conductor is preferably obtained by twisting stranded element wires obtained by twisting subsets of element wires.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: August 20, 2019
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shigeyuki Tanaka, Shinya Nishikawa, Hiroyuki Okawa, Takaya Kohori, Yuhei Mayama, Takayuki Hirai
  • Publication number: 20190198193
    Abstract: An object of the present disclosure is to provide a core electric wire for a multi-core cable that is superior in flex resistance at low temperature, and a multi-core cable employing the same. A core electric wire for a multi-core cable according to an aspect of the present disclosure comprises a conductor obtained by twisting element wires, and an insulating layer covering the conductor, wherein a linear expansion coefficient C of the insulating layer at from 25° C. to ?35° C. is no less than 1×10?5 K?and no greater than 2.5×10?4 K?1.
    Type: Application
    Filed: January 29, 2019
    Publication date: June 27, 2019
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shigeyuki TANAKA, Shinya NISHIKAWA, Hiroyuki OKAWA, Takaya KOHORI, Yuhei MAYAMA, Takayuki HIRAI