Patents by Inventor Mayumi Kosaka

Mayumi Kosaka 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: 11642627
    Abstract: A nanocarbon separation device includes a separation tank which is configured to accommodate a dispersion liquid including a nanocarbon, a first electrode that is provided at an upper part in the separation tank, a second electrode that is provided at a lower part in the separation tank, and a plurality of electrode tubes that extend in the separation tank in a height direction of the separation tank. The second electrode is disposed at a lower end of the electrode tubes.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: May 9, 2023
    Assignee: NEC CORPORATION
    Inventor: Mayumi Kosaka
  • Patent number: 11559769
    Abstract: A nanocarbon separation device includes a first porous structure configured to hold a solution containing a surfactant, a second porous structure configured to hold a dispersion medium, a holding part provided between the first porous structure and the second porous structure and configured to hold the dispersion liquid containing the nanocarbons and the surfactant and having a smaller content of the surfactant than that of the solution, a separation tank in which the first porous structure, the holding part and the second porous structure are disposed and accommodated in an order of the first porous structure, the holding part and the second porous structure, a first electrode provided on a lower section of the first porous structure, and a second electrode provided on an upper section of the second porous structure.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: January 24, 2023
    Assignee: NEC CORPORATION
    Inventor: Mayumi Kosaka
  • Publication number: 20220364933
    Abstract: An object of the present invention is to provide a bolometer having a high TCR value and a low resistance, and a method for manufacturing the same. The present invention relates to a bolometer manufacturing method including: fabricating a set of two carbon nanotube wires that are approximately parallel to each other at edges of a line shape, or fabricating a circular shape carbon nanotube wire at a circular circumference of a circular shape, by applying a semiconducting carbon nanotube dispersion liquid in the line shape or the circular shape on a substrate, and drying the dispersion liquid, a width of each wire being 5 ?m or more; and connecting a part of each wire to a first electrode and a second electrode.
    Type: Application
    Filed: April 28, 2022
    Publication date: November 17, 2022
    Applicant: NEC Corporation
    Inventor: Mayumi KOSAKA
  • Publication number: 20220364931
    Abstract: An object of the present invention is to provide a method for manufacturing a microscopic bolometer film and a bolometer using the same via a simple method. The present invention relates to a bolometer manufacturing method including: forming an interlayer having a function that enhances binding between a substrate and a semiconducting carbon nanotube, in a predetermined pattern shape on the substrate; and providing a droplet of a semiconducting carbon nanotube dispersion liquid on the formed interlayer.
    Type: Application
    Filed: April 28, 2022
    Publication date: November 17, 2022
    Applicant: NEC Corporation
    Inventor: Mayumi KOSAKA
  • Publication number: 20220364928
    Abstract: An object of the present invention is to provide a bolometer having a high TCR value and a low resistance, and a method for manufacturing the same. According to the present invention, a bolometer manufacturing method including: fabricating an interlayer having a function that enhances binding between a substrate and a carbon nanotube, in a predetermined shape on the substrate; and, making a semiconducting carbon nanotube dispersion liquid move on the interlayer in one direction relative to the fabricated interlayer is provided.
    Type: Application
    Filed: April 28, 2022
    Publication date: November 17, 2022
    Applicant: NEC Corporation
    Inventor: Mayumi KOSAKA
  • Patent number: 11383984
    Abstract: A nanocarbon separation device includes a separation tank which is configured to accommodate a dispersion liquid including a nanocarbon, a first electrode that is provided at an upper part in the separation tank, a second electrode that is provided at a lower part in the separation tank, and a partition member that is provided between the first electrode and the second electrode in the separation tank, and the partition member partitions the separation tank into a plurality of regions.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: July 12, 2022
    Assignee: NEC CORPORATION
    Inventors: Kazuki Ihara, Mayumi Kosaka, Ryota Yuge, Hideaki Numata, Fumiyuki Nihey
  • Publication number: 20210214230
    Abstract: The purpose of the present invention is to provide a carbon mixture having high electrical conductivity. A carbon mixture according to the present invention is characterized by including a fibrous carbon nanohorn aggregate having a length of 1 ?m or more in an amount of 20 wt % or more.
    Type: Application
    Filed: May 1, 2018
    Publication date: July 15, 2021
    Applicant: NEC CORPORATION
    Inventor: Mayumi KOSAKA
  • Publication number: 20200316525
    Abstract: A nanocarbon separation device includes a separation tank which is configured to accommodate a dispersion liquid including a nanocarbon, a first electrode that is provided at an upper part in the separation tank, a second electrode that is provided at a lower part in the separation tank, and a plurality of electrode tubes that extend in the separation tank in a height direction of the separation tank. The second electrode is disposed at a lower end of the electrode tubes.
    Type: Application
    Filed: October 10, 2017
    Publication date: October 8, 2020
    Applicant: NEC CORPORATION
    Inventor: Mayumi KOSAKA
  • Publication number: 20200283296
    Abstract: A nanocarbon separation device includes a separation tank which is configured to accommodate a dispersion liquid including a nanocarbon, a first electrode that is provided at an upper part in the separation tank, a second electrode that is provided at a lower part in the separation tank, and a partition member that is provided between the first electrode and the second electrode in the separation tank, and the partition member partitions the separation tank into a plurality of regions.
    Type: Application
    Filed: October 10, 2017
    Publication date: September 10, 2020
    Applicant: NEC CORPORATION
    Inventors: Kazuki IHARA, Mayumi KOSAKA, Ryota YUGE, Hideaki NUMATA, Fumiyuki NIHEY
  • Publication number: 20200261848
    Abstract: A nanocarbon separation device includes a first porous structure configured to hold a solution containing a surfactant, a second porous structure configured to hold a dispersion medium, a holding part provided between the first porous structure and the second porous structure and configured to hold the dispersion liquid containing the nanocarbons and the surfactant and having a smaller content of the surfactant than that of the solution, a separation tank in which the first porous structure, the holding part and the second porous structure are disposed and accommodated in an order of the first porous structure, the holding part and the second porous structure, a first electrode provided on a lower section of the first porous structure, and a second electrode provided on an upper section of the second porous structure.
    Type: Application
    Filed: October 3, 2018
    Publication date: August 20, 2020
    Applicant: NEC CORPORATION
    Inventor: Mayumi KOSAKA
  • Patent number: 7267866
    Abstract: A heat controller for an object, having a composite material formed of a base material radiating a large amount of heat at a high-temperature phase and a phase-change substance having insulation properties at a high-temperature phase, having metallic properties at a low-temperature phase, radiating a small amount of heat at a low-temperature phase, and having a high reflectivity in the thermal infrared region at a low-temperature phase.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: September 11, 2007
    Assignee: NEC Corporation
    Inventors: Ichiro Mase, Yasuyuki Nakamura, Yuichi Shimakawa, Mayumi Kosaka, Yoshimi Kubo
  • Publication number: 20020003229
    Abstract: A heat controller has a composite material formed by combining a base material radiating a large amount of heat at a high-temperature phase with a phase-change substance having insulation properties at a high-temperature phase, having metallic properties at a low-temperature phase, radiating a small amount of heat at a low-temperature phase, and having a high reflectivity in the thermal infrared region at a low-temperature phase, so as to control the temperature of an object.
    Type: Application
    Filed: July 6, 2001
    Publication date: January 10, 2002
    Applicant: NEC Corporation
    Inventors: Ichiro Mase, Yasuyuki Nakamura, Yuichi Shimakawa, Mayumi Kosaka, Yoshimi Kubo