Patents by Inventor Hidefumi Nikawa

Hidefumi Nikawa 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: 20230378783
    Abstract: A battery exchanger that holds a mobile battery, and includes a male connector that is connected to a female connector of the mobile battery held in a slot sleeve for holding the mobile battery, and a connector unit that moves the male connector in a direction toward the female connector. The slot sleeve includes a bottom cover having a bottom part, and the male connector and the connector unit are attached to the bottom cover, and supported by the bottom cover.
    Type: Application
    Filed: October 7, 2021
    Publication date: November 23, 2023
    Inventors: Takashi Matsumoto, Kazuhiro Yamamoto, Tsutomu Takahashi, Hidefumi Nikawa, Kuniaki Ikui
  • Patent number: 11417874
    Abstract: Provided is a non-aqueous electrolyte secondary battery capable of reliably operating an electricity shut-off mechanism at overcharging without deteriorating battery performance. The non-aqueous electrolyte secondary battery (1) includes, in a container (2): a positive electrode (41); in-container positive electrode terminals (21) and (23); a negative electrode (42); in-container negative electrode terminals (22) and (24); a non-aqueous electrolyte solution; and an electricity shut-off mechanism (68b) capable of shutting off energization with the outside of the container when the internal pressure of the container rises. A solid electrolyte layer that produces gas allowing the electricity shut-off mechanism (68b) to be operated is included in at least one member of a positive electrode mixture layer unformed portion (41b), a negative electrode mixture layer unformed portion (42b), the in-container positive electrode terminals (21) and (23), and the in-container negative electrode terminals (22) and (24).
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: August 16, 2022
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Hidefumi Nikawa, Kazuki Saimen
  • Publication number: 20220109308
    Abstract: A selecting device configured to select a combination of a plurality of secondary batteries that is used in a facility of a user is configured to acquire (A) period information about a period of time desired by the user, (B) facility consumption information about power consumption of the facility, and (C) output information including information of current peak power and information about a temporal change of future peak power of each secondary battery in a secondary battery group that becomes a candidate for the combination.
    Type: Application
    Filed: December 17, 2021
    Publication date: April 7, 2022
    Inventors: Hidefumi NIKAWA, Hirotaka ENDO, Takashi SONE
  • Publication number: 20210234156
    Abstract: Provided is a non-aqueous electrolyte secondary battery capable of reliably operating an electricity shut-off mechanism at overcharging without deteriorating battery performance. The non-aqueous electrolyte secondary battery (1) includes, in a container (2): a positive electrode (41); in-container positive electrode terminals (21) and (23); a negative electrode (42); in-container negative electrode terminals (22) and (24); a non-aqueous electrolyte solution; and an electricity shut-off mechanism (68b) capable of shutting off energization with the outside of the container when the internal pressure of the container rises. A solid electrolyte layer that produces gas allowing the electricity shut-off mechanism (68b) to be operated is included in at least one member of a positive electrode mixture layer unformed portion (41b), a negative electrode mixture layer unformed portion (42b), the in-container positive electrode terminals (21) and (23), and the in-container negative electrode terminals (22) and (24).
    Type: Application
    Filed: March 12, 2019
    Publication date: July 29, 2021
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Hidefumi Nikawa, Kazuki Saimen
  • Patent number: 10581077
    Abstract: Provided is an electrode for a secondary cell capable of obtaining excellent output values and input values when used in the secondary cell. The electrode for a secondary cell is formed of an electrode mixture layer molded body formed of an active material and at least one of a carbon nanotube and a three-dimensional carbon nanotube fiber bundle skeleton formed of a plurality of carbon nanotubes that intersect one another to form an aggregation, which are in intimate contact with the surface of the active material; and a current collector layered on the electrode mixture layer molded body. The electrode mixture layer molded body includes a first roughened surface, and the current collector includes a second roughened surface. The first roughened surface of the electrode mixture layer molded body and the second roughened surface of the current collector are pressed and attached to each other.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: March 3, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takahiro Komori, Ryogo Sakamoto, Akihisa Tanaka, Kazuki Saimen, Takuya Nishinuma, Toshio Tokune, Hidefumi Nikawa
  • Patent number: 10020439
    Abstract: An electrostrictive element that can prevent the breakage includes a current collector that is constituted by sheet-shaped carbon nanotube aggregates, and can expand in the fiber direction in a state in which carbon nanotubes overlap with each other, when a dielectric film expands.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: July 10, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Atsuo Orita, Hidefumi Nikawa
  • Patent number: 10020440
    Abstract: Provided are an electrostrictive element comprising film electrodes that have a good elasticity and conductivity, and a manufacturing method therefor. Film electrodes 3 of an electrostrictive element 1 are sheet-shaped carbon nanotube aggregates 6, and can expand in the fiber direction while maintaining a state in which carbon nanotubes 7 overlap with each other, when the dielectric film 2 expands.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: July 10, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Atsuo Orita, Hidefumi Nikawa
  • Publication number: 20180151881
    Abstract: Provided is an electrode for a secondary cell capable of obtaining excellent output values and input values when used in the secondary cell. The electrode for a secondary cell is formed of an electrode mixture layer molded body formed of an active material and at least one of a carbon nanotube and a three-dimensional carbon nanotube fiber bundle skeleton formed of a plurality of carbon nanotubes that intersect one another to form an aggregation, which are in intimate contact with the surface of the active material; and a current collector layered on the electrode mixture layer molded body. The electrode mixture layer molded body includes a first roughened surface, and the current collector includes a second roughened surface. The first roughened surface of the electrode mixture layer molded body and the second roughened surface of the current collector are pressed and attached to each other.
    Type: Application
    Filed: October 26, 2017
    Publication date: May 31, 2018
    Inventors: Takahiro KOMORI, Ryogo SAKAMOTO, Akihisa TANAKA, Kazuki SAIMEN, Takuya NISHINUMA, Toshio TOKUNE, Hidefumi NIKAWA
  • Publication number: 20160351782
    Abstract: Provided are an electrostrictive element comprising film electrodes that have a good elasticity and conductivity, and a manufacturing method therefor. Film electrodes 3 of an electrostrictive element 1 are sheet-shaped carbon nanotube aggregates 6, and can expand in the fiber direction while maintaining a state in which carbon nanotubes 7 overlap with each other, when the dielectric film 2 expands.
    Type: Application
    Filed: May 28, 2015
    Publication date: December 1, 2016
    Inventors: Atsuo Orita, Hidefumi Nikawa
  • Publication number: 20160351785
    Abstract: Provided is an electrostrictive element that can prevent the breakage. A current collector 5 of an electrostrictive element 1 is constituted by sheet-shaped carbon nanotube aggregates 6, and can expand in the fiber direction in a state in which carbon nanotubes 7 overlap with each other, when a dielectric film 2 expands.
    Type: Application
    Filed: May 28, 2015
    Publication date: December 1, 2016
    Inventors: Atsuo Orita, Hidefumi Nikawa
  • Publication number: 20160036059
    Abstract: A current collector also serving as an electrode for a battery includes a three-dimensional fiber composite in which a plurality of conductors are disposed in a three-dimensional void of a three-dimensional fiber assembly skeleton, the three-dimensional fiber assembly skeleton being formed by intersecting and assembling a plurality of irregular shaped carbon nano-tubes. An active material that is carried on the carbon nano-tubes or an active material that is carried on the conductors is accommodated in the three-dimensional void inside the three-dimensional fiber composite, and the three-dimensional fiber composite is shaped in a sheet shape.
    Type: Application
    Filed: July 27, 2015
    Publication date: February 4, 2016
    Inventors: Toshio Tokune, Hidefumi Nikawa, Natsuo Nakamura, Takahiro Komori
  • Publication number: 20140295293
    Abstract: Provided is an electrode that contributes to higher performance improvement of batteries and capacitors by selecting a dispersant not only for uniformalizing an electrode structure but also playing the performance improvement role for the batteries or capacitors. An electrode 1 includes an active material 2 and a conductive additive 3. The electrode 1 also includes a dispersant 5, and the dispersant 5 is adsorbed onto the surfaces of the conductive additive 3 and the active material 2. More preferably, the electrode 1 includes the dispersant 5 having at least one kind selected from a group consisting of molecular structures, atoms, and ions which acts as a charge transfer medium, and most preferably, the electrode 1 includes the dispersant 5 having the same charge as the charge transfer medium contained in the active material 2.
    Type: Application
    Filed: March 24, 2014
    Publication date: October 2, 2014
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Hidefumi NIKAWA, Toshio TOKUNE
  • Patent number: 8828349
    Abstract: A substrate for growing carbon nanotubes capable of elongating single-walled carbon nanotubes of an average diameter of less than 2 nm is provided. The substrate for growing carbon nanotubes 1 is equipped with a reaction prevention layer 3 formed on a base material 2, a catalyst material layer 4 formed on the reaction prevention layer 3, a dispersion layer 5 formed on the catalyst material layer 4, and a dispersion promotion layer 6 formed on the dispersion layer 5.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: September 9, 2014
    Assignees: Honda Motor Co., Ltd., Waseda University
    Inventors: Toshiyuki Ohashi, Toshio Tokune, Masahiro Ota, Hidefumi Nikawa, Hiroshi Kawarada, Takumi Ochiai
  • Patent number: 8815168
    Abstract: A carbon nanotube synthesizing apparatus in which the state of generated plasma can be stabilized is provided. A carbon nanotube synthesizing apparatus 1 comprises a chamber 2, an antenna 3 including a tip 3a, a microwave conductor 4, a gas introducing unit 5, a gas discharging unit 6, a substrate holding unit 7, and a heating unit 8. The shape of the inner wall of the chamber 2 is symmetrical with respect to the tip 3a of the antenna 3.
    Type: Grant
    Filed: March 9, 2013
    Date of Patent: August 26, 2014
    Assignees: Honda Motor Co., Ltd., Waseda University
    Inventors: Hiroshi Kawarada, Toshiyuki Ohashi, Masahiro Ohta, Ryogo Kato, Toshio Tokune, Hidefumi Nikawa
  • Patent number: 8808812
    Abstract: Disclosed is a method capable of accelerating the growth of oriented carbon nanotubes when manufacturing the oriented carbon nanotubes by a plasma CVD. Under the circulation of a gas which is the raw material of the carbon nanotubes, plasma is generated by an antenna (6) provided in a depressurized treatment chamber (2), and substrates (9, 15) provided with a reaction prevention layer and a catalyst material layer which are formed on a base material are held at a distance, to which a radical can reach and an attack of an ion generated as a by-product of the radical can be avoided, from a plasma generation area (7). The tip (6a) of the antenna (6) can be controlled so as to match with the position of the anti-node of a stationary wave (27) of microwaves.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: August 19, 2014
    Assignees: Honda Motor Co., Ltd., Waseda University
    Inventors: Hiroshi Kawarada, Ryogo Kato, Toshiyuki Ohashi, Toshio Tokune, Hidefumi Nikawa
  • Publication number: 20140217643
    Abstract: There are provided carbon nanotube fibers having excellent mechanical property and a method for producing the same. In a long carbon nanotube fiber 11 in which a plurality of carbon nanotubes 12 are assembled, the carbon nanotubes 12 comprise a diameter ranging from 0.4 to 100 nm and are oriented in an angle ranging from 0 to 5° with respect to axial direction of the carbon nanotube fiber 11.
    Type: Application
    Filed: February 3, 2014
    Publication date: August 7, 2014
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Hidefumi Nikawa, Masahiro Ohta, Toshio Tokune
  • Publication number: 20130259763
    Abstract: A carbon nanotube synthesizing apparatus in which the state of generated plasma can be stabilized is provided. A carbon nanotube synthesizing apparatus 1 comprises a chamber 2, an antenna 3 including a tip 3a, a microwave conductor 4, a gas introducing unit 5, a gas discharging unit 6, a substrate holding unit 7, and a heating unit 8. The shape of the inner wall of the chamber 2 is symmetrical with respect to the tip 3a of the antenna 3.
    Type: Application
    Filed: March 9, 2013
    Publication date: October 3, 2013
    Applicants: WASEDA UNIVERSITY, HONDA MOTOR CO., LTD.
    Inventors: Hiroshi KAWARADA, Toshiyuki OHASHI, Masahiro OHTA, Ryogo KATO, Toshio TOKUNE, Hidefumi NIKAWA
  • Publication number: 20120230908
    Abstract: A substrate for growing carbon nanotubes capable of elongating single-walled carbon nanotubes of an average diameter of less than 2 nm is provided. The substrate for growing carbon nanotubes 1 is equipped with a reaction prevention layer 3 formed on a base material 2, a catalyst material layer 4 formed on the reaction prevention layer 3, a dispersion layer 5 formed on the catalyst material layer 4, and a dispersion promotion layer 6 formed on the dispersion layer 5.
    Type: Application
    Filed: March 7, 2012
    Publication date: September 13, 2012
    Applicants: WASEDA UNIVERSITY, HONDA MOTOR CO., LTD.
    Inventors: Toshiyuki OHASHI, Toshio TOKUNE, Masahiro OTA, Hidefumi NIKAWA, Hiroshi KAWARADA, Takumi OCHIAI
  • Publication number: 20120156392
    Abstract: Disclosed is a method capable of accelerating the growth of oriented carbon nanotubes when manufacturing the oriented carbon nanotubes by a plasma CVD. Under the circulation of a gas which is the raw material of the carbon nanotubes, plasma is generated by an antenna (6) provided in a depressurized treatment chamber (2), and substrates (9, 15) provided with a reaction prevention layer and a catalyst material layer which are formed on a base material are held at a distance, to which a radical can reach and an attack of an ion generated as a by-product of the radical can be avoided, from a plasma generation area (7). The tip (6a) of the antenna (6) can be controlled so as to match with the position of the anti-node of a stationary wave (27) of microwaves.
    Type: Application
    Filed: August 30, 2010
    Publication date: June 21, 2012
    Applicants: WASEDA UNIVERSITY, HONDA MOTOR CO., LTD.
    Inventors: Hiroshi Kawarada, Ryogo Kato, Toshiyuki Ohashi, Toshio Tokune, Hidefumi Nikawa