Patents by Inventor Takahiro Tei

Takahiro Tei 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: 11817261
    Abstract: An ink includes a boron-doped nanodiamond having a specific surface area of 110 m2/g or greater, and electrical conductivity at 20° C. of 5.0×10?3 S/cm or greater.
    Type: Grant
    Filed: November 18, 2021
    Date of Patent: November 14, 2023
    Assignees: DAICEL CORPORATION, TOKYO UNIVERSITY OF SCIENCE FOUNDATION
    Inventors: Takeshi Kondo, Tatsuo Aikawa, Makoto Yuasa, Kenjo Miyashita, Masahiro Nishikawa, Takahiro Tei
  • Patent number: 11742153
    Abstract: Provided is an electrode-forming material for an electrochemical capacitor useful for forming an electrode of an electrochemical capacitor having a high storage capacity and a high energy density. The electrode-forming material for an electrochemical capacitor according to an embodiment of the present invention includes boron-doped nanodiamond (A) having a specific surface area of 110 m2/g or greater and an electrical conductivity at 20° C. of 5.0×10?3 S/cm or greater; and a metal oxide (B), and the content of the (B) is from 20 to 95 mass % with respect to the total content of the (A) and (B).
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: August 29, 2023
    Assignees: DAICEL CORPORATION, TOKYO UNIVERSITY OF SCIENCE FOUNDATION
    Inventors: Takeshi Kondo, Toshifumi Tojo, Makoto Yuasa, Kenjo Miyashita, Atori Miki, Masahiro Nishikawa, Takahiro Tei
  • Publication number: 20220169517
    Abstract: The present invention provides a nanocluster in which a carbon nanomaterial modified with a higher alkyl group or a higher alkenyl group is self-assembled.
    Type: Application
    Filed: March 3, 2020
    Publication date: June 2, 2022
    Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, DAICEL CORPORATION
    Inventors: Eijiro MIYAKO, Yue YU, Masahiro NISHIKAWA, Ming LIU, Takahiro TEI
  • Publication number: 20220157536
    Abstract: Provided is an electrode-forming material for an electrochemical capacitor useful for forming an electrode of an electrochemical capacitor having a high storage capacity and a high energy density. The electrode-forming material for an electrochemical capacitor according to an embodiment of the present invention includes boron-doped nanodiamond (A) having a specific surface area of 110 m2/g or greater and an electrical conductivity at 20° C. of 5.0×10?3 S/cm or greater; and a metal oxide (B), and the content of the (B) is from 20 to 95 mass % with respect to the total content of the (A) and (B).
    Type: Application
    Filed: February 28, 2020
    Publication date: May 19, 2022
    Applicants: DAICEL CORPORATION, TOKYO UNIVERSITY OF SCIENCE FOUNDATION
    Inventors: Takeshi KONDO, Toshifumi TOJO, Makoto YUASA, Kenjo MIYASHITA, Atori MIKI, Masahiro NISHIKAWA, Takahiro TEI
  • Publication number: 20220133914
    Abstract: The present invention provides a photo-exothermic composite material represented by Formula (I) of CNM-(Y1—R)n1 (I) (wherein, CNM denotes a carbon nanomaterial, Y1 denotes a divalent linking group, R denotes a group derived from a fluorescent substance or pigment; and n1 is an integer of 1 or greater).
    Type: Application
    Filed: March 3, 2020
    Publication date: May 5, 2022
    Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, DAICEL CORPORATION
    Inventors: Eijiro MIYAKO, Yue YU, Masahiro NISHIKAWA, Ming LIU, Takahiro TEI
  • Publication number: 20220076899
    Abstract: An ink includes a boron-doped nanodiamond having a specific surface area of 110 m2/g or greater, and electrical conductivity at 20° C. of 5.0×10?3 S/cm or greater.
    Type: Application
    Filed: November 18, 2021
    Publication date: March 10, 2022
    Applicants: DAICEL CORPORATION, TOKYO UNIVERSITY OF SCIENCE FOUNDATION
    Inventors: Takeshi KONDO, Tatsuo AIKAWA, Makoto YUASA, Kenjo MIYASHITA, Masahiro NISHIKAWA, Takahiro TEI
  • Publication number: 20200384111
    Abstract: The present invention provides a self-assembled nanocluster containing a carbon nanomaterial modified with a functional group represented by the following formula (I): —Y1—R (I) wherein Y1 represents a divalent linking group, and R represents an organic group.
    Type: Application
    Filed: November 30, 2018
    Publication date: December 10, 2020
    Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, DAICEL CORPORATION
    Inventors: Eijiro MIYAKO, Yue YU, Masahiro NISHIKAWA, Ming LIU, Takahiro TEI
  • Publication number: 20200357578
    Abstract: Provided are a boron-doped nanodiamond having a large specific surface area and high electrical conductivity, an electrode containing the boron-doped nanodiamond, and a sensor or an electricity storage device provided with the electrode. The boron-doped nanodiamond of the present invention has a specific surface area of 110 m2/g or greater and electrical conductivity at 20° C. of 5.0×10?3 S/cm or greater. The boron-doped nanodiamond preferably has a median diameter of 200 nm or smaller. Additionally, the electrode of the present invention contains the boron-doped nanodiamond.
    Type: Application
    Filed: August 28, 2018
    Publication date: November 12, 2020
    Applicants: DAICEL CORPORATION, TOKYO UNIVERSITY OF SCIENCE FOUNDATION
    Inventors: Takeshi KONDO, Tatsuo AIKAWA, Makoto YUASA, Kenjo MIYASHITA, Masahiro NISHIKAWA, Takahiro TEI
  • Publication number: 20170298535
    Abstract: Provided are: a high-melting-point resin fiber having heat resistance and solvent resistance, offering excellent workability/formability, and having a diameter of 4 ?m or less; and a nonwoven fabric including the high-melting-point resin fiber. Also provided is a method for efficiently producing a high-melting-point resin fiber having a diameter of 4 ?m or less, via laser melt electrospinning. The high-melting-point resin fiber according to the present invention includes a resin having a melting point of 250° C. or higher and has a diameter of 4 ?m or less. In the high-melting-point resin fiber, the resin having a melting point of 250° C. or higher is preferably a PEEK. The fiber preferably has a degree of crystallinity of 30% or less.
    Type: Application
    Filed: August 26, 2015
    Publication date: October 19, 2017
    Applicant: Daicel Corporation
    Inventors: Takahiro TEI, Aya YOKOYAMA
  • Publication number: 20150362728
    Abstract: Provided is a polarization laminate that allows a distinct transmission image to be displayed on a translucent screen while maintaining the visibility of a projection image from a projector even in a case where the translucent screen contains a diffusion-polarization plate. A transparent polarization laminate as a member of a translucent projector screen for displaying a projection image from a projector comprises a diffusion polarization layer and an absorption polarization layer, the diffusion polarization layer comprises a continuous phase comprising a first transparent thermoplastic resin and a dispersed phase comprising a second transparent thermoplastic resin and having a refractive index different from that of the continuous phase, and these layers are laminated so that the diffusion polarization layer may have a transmission axis substantially parallel with a transmission axis of the absorption polarization layer.
    Type: Application
    Filed: January 8, 2014
    Publication date: December 17, 2015
    Applicant: DAICEL CORPORATION
    Inventor: Takahiro TEI
  • Publication number: 20130102734
    Abstract: A photosemiconductor protective material comprising a chain olefin-cyclic olefin copolymer elastomer composed of a chain olefin and a cyclic olefin as polymerizable components is prepared. The elastomer may comprise an ?-chain C2-4olefin and a polycyclic olefin as polymerizable components, and the molar ratio of the ?-chain C2-4olefin relative to the polycyclic olefin may be 80/20 to 99/1 in a ratio of the ?-chain C2-4olefin/the polycyclic olefin. The photosemiconductor protective material may further contain an organic silicon compound having a hydrolytically condensable group. The organic silicon compound may be a silane coupling agent having a (meth)acryloyl group. A photosemiconductor protective material 1 as the protective material is suitable as a solar cell encapsulant or filler 3 for encapsulating a solar cell 4. The photosemiconductor protective material has a high transparency and a high weather resistance and a proper elasticity and effectively protects a photosemiconductor.
    Type: Application
    Filed: April 13, 2011
    Publication date: April 25, 2013
    Applicant: DAICEL CORPORATION
    Inventors: Akira Takaragi, Takahiro Iwahama, Takahiro Tei, Ryuta Tomoyose