Patents by Inventor Soichiro Okubo

Soichiro Okubo 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: 11939219
    Abstract: The carbon nanotube assembled wire includes a plurality of carbon nanotubes oriented at a degree of orientation of 0.9 or more and 1 or less.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: March 26, 2024
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., UNIVERSITY OF TSUKUBA
    Inventors: Toshihiko Fujimori, Takeshi Hikata, Soichiro Okubo, Jun-ichi Fujita
  • Patent number: 11866330
    Abstract: A method for manufacturing a carbon nanotube includes: a mist generating step of generating a mist including a catalyst particle and a liquid carbon source; and a growing step of growing a carbon nanotube from the catalyst particle by heating the mist.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: January 9, 2024
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., UNIVERSITY OF TSUKUBA
    Inventors: Takeshi Hikata, Toshihiko Fujimori, Soichiro Okubo, Jun Otsuka, Jun-ichi Fujita
  • Patent number: 11685655
    Abstract: A carbon nanostructure producing method includes a growth step in which a plurality of catalyst particles in close contact with each other are separated in a flow of a carbon-containing gas so as to grow carbon nanotubes between the plurality of catalyst particles, and an elongation step in which the carbon nanotube is elongated by a wind pressure of the carbon-containing gas with at least one of the catalyst particles being retained.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: June 27, 2023
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., UNIVERSITY OF TSUKUBA
    Inventors: Takeshi Hikata, Soichiro Okubo, Ryusuke Nakai, Jun-ichi Fujita
  • Patent number: 11673806
    Abstract: A carbon nanotube composite assembled wire is a carbon nanotube composite assembled wire including a plurality of carbon nanotube composites, each of the plurality of carbon nanotube composites including one carbon nanotube and an amorphous carbon-containing layer that coats the carbon nanotube, the carbon nanotube having a D/G ratio of 0.1 or less, the D/G ratio being a ratio of a peak intensity of a D band to a peak intensity of a G band in Raman spectroscopic analysis with a wavelength of 532 nm, each of the plurality of carbon nanotube composites being fibrous and having a diameter of 0.1 ?m or more and 50 ?m or less, the plurality of carbon nanotube composites being oriented in a longitudinal direction of the carbon nanotube composite assembled wire.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: June 13, 2023
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., UNIVERSITY OF TSUKUBA
    Inventors: Toshihiko Fujimori, Takeshi Hikata, Soichiro Okubo, Jun-ichi Fujita
  • Patent number: 11511996
    Abstract: A carbon nanotube composite is a carbon nanotube composite including one carbon nanotube and an amorphous carbon-containing layer that coats the carbon nanotube, the carbon nanotube having a D/G ratio of 0.1 or less, the D/G ratio being a ratio of a peak intensity of a D band to a peak intensity of a G band in Raman spectroscopic analysis with a wavelength of 532 nm, the carbon nanotube composite being fibrous and having a diameter of 0.1 ?m or more and 50 ?m or less.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: November 29, 2022
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., UNIVERSITY OF TSUKUBA
    Inventors: Toshihiko Fujimori, Takeshi Hikata, Soichiro Okubo, Jun-ichi Fujita
  • Publication number: 20220341065
    Abstract: A carbon nanotube-resin composite includes: a carbon nanotube assembled wire including a plurality of carbon nanotubes; and a resin, wherein in the carbon nanotube assembled wire, the carbon nanotubes are oriented at a degree of orientation of 0.9 or more and 1 or less.
    Type: Application
    Filed: August 28, 2020
    Publication date: October 27, 2022
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., UNIVERSITY OF TSUKUBA
    Inventors: Toshihiko FUJIMORI, Takeshi HIKATA, Soichiro OKUBO, Jun-ichi FUJITA
  • Publication number: 20220315427
    Abstract: A carbon nanotube assembled wire includes a plurality of carbon nanotubes, wherein in a Raman spectrum of the carbon nanotube assembled wire, a ratio IB/IA of an integrated intensity IA in a range of a Raman shift of 120 cm?1 or more and 210 cm?1 or less and an integrated intensity IB in a range of a Raman shift of more than 210 cm?1 and 280 cm?1 or less is 0.1 or more.
    Type: Application
    Filed: August 28, 2020
    Publication date: October 6, 2022
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., UNIVERSITY OF TSUKUBA
    Inventors: Takeshi HIKATA, Toshihiko FUJIMORI, Soichiro OKUBO, Jun OTSUKA, Jun-ichi FUJITA
  • Publication number: 20220153585
    Abstract: A method for manufacturing a carbon nanotube includes: a mist generating step of generating a mist including a catalyst particle and a liquid carbon source; and a growing step of growing a carbon nanotube from the catalyst particle by heating the mist.
    Type: Application
    Filed: February 18, 2020
    Publication date: May 19, 2022
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., UNIVERSITY OF TSUKUBA
    Inventors: Takeshi HIKATA, Toshihiko FUJIMORI, Soichiro OKUBO, Jun OTSUKA, Jun-ichi FUJITA
  • Publication number: 20220064002
    Abstract: The carbon nanotube assembled wire includes a plurality of carbon nanotubes oriented at a degree of orientation of 0.9 or more and 1 or less.
    Type: Application
    Filed: December 26, 2019
    Publication date: March 3, 2022
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., UNIVERSITY OF TSUKUBA
    Inventors: Toshihiko FUJIMORI, Takeshi HIKATA, Soichiro OKUBO, Jun-ichi FUJITA
  • Publication number: 20220064003
    Abstract: A method for manufacturing a carbon nanotube includes: a growing step of growing a carbon nanotube from a catalyst particle by supplying a carbon-containing gas to the catalyst particle in a suspended state; and a drawing step of drawing the carbon nanotube by applying a tensile force to the carbon nanotube in a suspended state.
    Type: Application
    Filed: December 26, 2019
    Publication date: March 3, 2022
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., UNIVERSITY OF TSUKUBA
    Inventors: Toshihiko FUJIMORI, Takeshi HIKATA, Soichiro OKUBO, Jun-ichi FUJITA, Jun OTSUKA
  • Patent number: 11220432
    Abstract: A method for producing a carbon nanostructure according to an aspect of the present invention is a method in which a carbon nanostructure is produced between a base body and a separable body while the separable body is relatively moved away from the base body, the base body including a carburizable metal that is a principal constituent, the separable body including a carburizable metal that is a principal constituent, the separable body being joined to or in contact with the base body in a linear or strip-like shape. The method includes a carburizing gas feed step, an oxidizing gas feed step, a heating step in which the portion of the base body at which the base body and the separable body are joined to or in contact with each other is heated, and a separation step in which the separable body is relatively moved away from the base body.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: January 11, 2022
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takeshi Hikata, Soichiro Okubo, Ryusuke Nakai, Daisuke Tanioka
  • Publication number: 20210309522
    Abstract: A carbon nanotube composite assembled wire is a carbon nanotube composite assembled wire including a plurality of carbon nanotube composites, each of the plurality of carbon nanotube composites including one carbon nanotube and an amorphous carbon-containing layer that coats the carbon nanotube, the carbon nanotube having a D/G ratio of 0.1 or less, the D/G ratio being a ratio of a peak intensity of a D band to a peak intensity of a G band in Raman spectroscopic analysis with a wavelength of 532 nm, each of the plurality of carbon nanotube composites being fibrous and having a diameter of 0.1 ?m or more and 50 ?m or less, the plurality of carbon nanotube composites being oriented in a longitudinal direction of the carbon nanotube composite assembled wire.
    Type: Application
    Filed: August 29, 2019
    Publication date: October 7, 2021
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., UNIVERSITY OF TSUKUBA
    Inventors: Toshihiko FUJIMORI, Takeshi HIKATA, Soichiro OKUBO, Jun-ichi FUJITA
  • Publication number: 20210214228
    Abstract: A carbon nanotube composite is a carbon nanotube composite including one carbon nanotube and an amorphous carbon-containing layer that coats the carbon nanotube, the carbon nanotube having a D/G ratio of 0.1 or less, the D/G ratio being a ratio of a peak intensity of a D band to a peak intensity of a G band in Raman spectroscopic analysis with a wavelength of 532 nm, the carbon nanotube composite being fibrous and having a diameter of 0.1 ?m or more and 50 ?m or less.
    Type: Application
    Filed: August 29, 2019
    Publication date: July 15, 2021
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., UNIVERSITY OF TSUKUBA
    Inventors: Toshihiko FUJIMORI, Takeshi HIKATA, Soichiro OKUBO, Jun-ichi FUJITA
  • Patent number: 10807908
    Abstract: An optical component according to an embodiment of the present invention includes a translucent substrate, one or more intermediate layers stacked on at least one of an incident surface and an exit surface of the substrate, and a surface layer stacked on an outermost layer of the one or more intermediate layers, the surface layer containing diamond-like carbon as a main component. At least one intermediate layer among the one or more intermediate layers contains silicon as a main component, and the intermediate layer containing silicon as a main component has an oxygen content of 10 atomic % or less.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: October 20, 2020
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Ryota Yamaguchi, Soichiro Okubo
  • Publication number: 20200290877
    Abstract: A carbon nanostructure producing method includes a growth step in which a plurality of catalyst particles in close contact with each other are separated in a flow of a carbon-containing gas so as to grow carbon nanotubes between the plurality of catalyst particles, and an elongation step in which the carbon nanotube is elongated by a wind pressure of the carbon-containing gas with at least one of the catalyst particles being retained.
    Type: Application
    Filed: June 29, 2018
    Publication date: September 17, 2020
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., UNIVERSITY OF TSUKUBA
    Inventors: Takeshi HIKATA, Soichiro OKUBO, Ryusuke NAKAI, Jun-ichi FUJITA
  • Patent number: 10767282
    Abstract: A method for manufacturing a carbon nanostructure according to an embodiment of the present invention is a method for manufacturing a carbon nanostructure, the method including a preparation step of preparing a substrate containing a carburizable metal as a main component, and a carbon nanostructure growth step of supplying a carbon-containing gas while heating the substrate, in which the carbon nanostructure growth step includes gradually cleaving a heated portion of the substrate. The cleaving in the carbon nanostructure growth step is preferably performed by subjecting the substrate to shearing. The heating in the carbon nanostructure growth step is preferably performed by irradiating a cleaving portion of the substrate with a laser. The preparation step preferably includes forming, in the substrate, a notch for inducing cleavage. Preferably, the substrate in the carbon nanostructure growth step is not oxidized.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: September 8, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takeshi Hikata, Soichiro Okubo, Ryusuke Nakai, Daisuke Tanioka
  • Publication number: 20190169030
    Abstract: A method for producing a carbon nanostructure according to an aspect of the present invention is a method in which a carbon nanostructure is produced between a base body and a separable body while the separable body is relatively moved away from the base body, the base body including a carburizable metal that is a principal constituent, the separable body including a carburizable metal that is a principal constituent, the separable body being joined to or in contact with the base body in a linear or strip-like shape. The method includes a carburizing gas feed step, an oxidizing gas feed step, a heating step in which the portion of the base body at which the base body and the separable body are joined to or in contact with each other is heated, and a separation step in which the separable body is relatively moved away from the base body.
    Type: Application
    Filed: March 14, 2017
    Publication date: June 6, 2019
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takeshi HIKATA, Soichiro OKUBO, Ryusuke NAKAI, Daisuke TANIOKA
  • Publication number: 20190023609
    Abstract: An optical component according to an embodiment of the present invention includes a translucent substrate, one or more intermediate layers stacked on at least one of an incident surface and an exit surface of the substrate, and a surface layer stacked on an outermost layer of the one or more intermediate layers, the surface layer containing diamond-like carbon as a main component. At least one intermediate layer among the one or more intermediate layers contains silicon as a main component, and the intermediate layer containing silicon as a main component has an oxygen content of 10 atomic % or less.
    Type: Application
    Filed: January 12, 2017
    Publication date: January 24, 2019
    Inventors: Ryota YAMAGUCHI, Soichiro OKUBO
  • Publication number: 20180327934
    Abstract: A method for manufacturing a carbon nanostructure according to an embodiment of the present invention is a method for manufacturing a carbon nanostructure, the method including a preparation step of preparing a substrate containing a carburizable metal as a main component, and a carbon nanostructure growth step of supplying a carbon-containing gas while heating the substrate, in which the carbon nanostructure growth step includes gradually cleaving a heated portion of the substrate. The cleaving in the carbon nanostructure growth step is preferably performed by subjecting the substrate to shearing. The heating in the carbon nanostructure growth step is preferably performed by irradiating a cleaving portion of the substrate with a laser. The preparation step preferably includes forming, in the substrate, a notch for inducing cleavage. Preferably, the substrate in the carbon nanostructure growth step is not oxidized.
    Type: Application
    Filed: July 21, 2016
    Publication date: November 15, 2018
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takeshi HIKATA, Soichiro OKUBO, Ryusuke NAKAI, Daisuke TANIOKA
  • Patent number: 10105683
    Abstract: A porous member includes a base member and carbon nanostructures. The base member includes a porous body having a porosity of more than or equal to 80%. The carbon nanostructures are formed on a surface of the base member, and have a width of less than or equal to 100 nm. A catalyst member includes a catalyst arranged on surfaces of the carbon nano structures.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: October 23, 2018
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Soichiro Okubo, Takeshi Hikata, Risa Utsunomiya, Teruaki Matsuba, Hitoshi Matsumoto, Yugo Higashi