Patents by Inventor Akira Kishimoto

Akira Kishimoto 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: 20240001287
    Abstract: Provided is a regeneration device for heating a treatment liquid in a phase-separated state due to absorption of an acidic compound to release the acidic compound and regenerate the treatment liquid. The regeneration device includes a container for storing the treatment liquid, and a first wall that partitions a space in the container into a first space and a second space. The first space includes: a heating region that receives the treatment liquid supplied from an outside of the container and in which a heating unit for heating the treatment liquid is disposed; and a static region that receives the treatment liquid from the heating region, the treatment liquid having released the acidic compound by being heated by the heating unit. The second space allows the treatment liquid having released the acidic compound to be discharged. The first wall is provided with an opening through which the treatment liquid in the static region flows into the second space.
    Type: Application
    Filed: September 2, 2021
    Publication date: January 4, 2024
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Norihide MAEDA, Akira KISHIMOTO, Takuo SHIGEHISA, Ken NAKANISHI, Kunihiko SHIMIZU
  • Publication number: 20230395290
    Abstract: An object of the present invention is to provide a semi-hard magnetic white powder having characteristics suitable as a security pigment, such as the magnetic powder contained in magnetic inks used for MICR. The white powder includes base particles made of a semi-hard magnetic Alnico alloy, the base particles having a titanium oxide film and a metallic silver film in this order on the surfaces thereof.
    Type: Application
    Filed: August 22, 2023
    Publication date: December 7, 2023
    Applicant: NITTETSU MINING CO., LTD.
    Inventors: Akira KISHIMOTO, Takahiro ITO, Naoto KITAMURA
  • Publication number: 20230364549
    Abstract: Provided is a gas-treating device including: an absorption device that receives an absorbent to absorb an acidic compound in a gas to be treated into the absorbent; a release device into which the absorbent having absorbed the acidic compound in the absorption device is introduced; a heater for heating the absorbent in the release device to release the acidic compound contained in the absorbent from the absorbent; and a multi-fluid heat exchanger for heating the absorbent before being supplied from the absorption device to the release device by a fluid containing the acidic compound discharged from the release device and the absorbent before being supplied from the release device to the absorption device.
    Type: Application
    Filed: September 2, 2021
    Publication date: November 16, 2023
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Norihide MAEDA, Akira KISHIMOTO, Takuo SHIGEHISA, Ken NAKANISHI, Kunihiko SHIMIZU
  • Publication number: 20220316781
    Abstract: This ice making machine includes an ice making unit that includes an ice making surface and a cryogen flow channel through which a cryogen for cooling the ice making surface flows; a pump that pressurizes and discharges the cryogen cooled by a heat exchanger; and a control unit that controls a discharge amount of the pump. The cryogen is carbon dioxide, and the control unit controls the pump such that the cryogen is in a gas-liquid mixed state at an outlet of the cryogen flow channel.
    Type: Application
    Filed: May 15, 2020
    Publication date: October 6, 2022
    Inventors: Masanori KANDO, Akira KISHIMOTO, Toshio KUTSUNA, Takumi SHIRATO, Masaki KATAMI, Tomoaki AKIYAMA, Reina AKIYAMA, Bo HU, Keito AKIYAMA, Tetsuji INOUE
  • Publication number: 20220234910
    Abstract: Provided are cobalt ferrite particles having a micrometer-order average particle diameter and similar particle diameters. When a cobalt ferrite precursor is treated at a high temperature and a high pressure, an oxidation reaction is caused in the presence of a complexing agent, thereby obtaining intended cobalt ferrite magnetic particles.
    Type: Application
    Filed: April 8, 2020
    Publication date: July 28, 2022
    Applicant: NITTETSU MINING CO., LTD.
    Inventors: Tsubasa ARAI, Naoki MURATANI, Akira KISHIMOTO, Hideyuki TAKAHASHI
  • Publication number: 20220226769
    Abstract: An aspect of the present invention is a gas treatment method including: an absorption step of bringing a gas to be treated, which contains carbon dioxide and a sulfur compound, into contact with an absorption liquid to be phase-separated by carbon dioxide absorption, to cause the absorption liquid to absorb the carbon dioxide and the sulfur compound; and a first release step of heating the absorption liquid brought into contact with the gas to be treated to a temperature equal to or higher than a temperature at which the carbon dioxide absorbed by the absorption liquid is released from the absorption liquid and lower than a temperature at which the sulfur compound absorbed by the absorption liquid is released from the absorption liquid, to release the carbon dioxide from the absorption liquid.
    Type: Application
    Filed: April 10, 2020
    Publication date: July 21, 2022
    Applicants: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.), National University Corporation Tokai National Higher Education and Research System
    Inventors: Norihide MAEDA, Akira KISHIMOTO, Ken NAKANISHI, Hiroshi MACHIDA, Tsuyoshi YAMAGUCHI, Koyo NORINAGA
  • Publication number: 20220194813
    Abstract: Provided are magnetic particles (cobalt ferrite) having a micrometer-order average particle diameter and similar particle diameters. A cobalt ferrite precursor is heated in the presence of a sulfite, thereby obtaining intended cobalt ferrite magnetic particles.
    Type: Application
    Filed: April 8, 2020
    Publication date: June 23, 2022
    Applicant: NITTETSU MINING CO., LTD.
    Inventors: Naoki MURATANI, Tsubasa ARAI, Akira KISHIMOTO
  • Patent number: 11331625
    Abstract: A gas treatment method includes an absorption step in which a gas to be treated containing an acidic compound, such as carbon dioxide, is brought into contact, in an absorber, with a treatment liquid that absorbs the acidic compound; and a regeneration step in which the treatment liquid, having the acidic compound absorbed therein, is sent to a regenerator, and the treatment liquid is then heated to separate the acidic compound from the treatment liquid. In the regeneration step, a gas almost insoluble to the treatment liquid, such as hydrogen gas, is brought into contact with the treatment liquid.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: May 17, 2022
    Assignees: Kobe Steel, Ltd., National University Corporation Tokai National Higher Education and Research System
    Inventors: Akira Kishimoto, Katsuya Akiyama, Hiroshi Machida, Tsuyoshi Yamaguchi, Takehiro Esaki, Koyo Norinaga
  • Publication number: 20220006080
    Abstract: A nonaqueous electrolyte secondary battery including a positive electrode, a negative electrode, and a nonaqueous electrolyte, the positive electrode containing, as a positive active material, a lithium transition metal composite oxide having an ?-NaFeO2 type crystal structure, a molar ratio of Li to Me, Li/Me of more than 1, Me representing transition metal elements including Ni and Mn or including Ni, Mn, and Co, and a molar ratio of Mn to Me, Mn/Me of 0.40 or more and 0.65 or less, and the nonaqueous electrolyte containing, as an electrolyte salt, LiPF6 and a lithium imide salt.
    Type: Application
    Filed: October 25, 2019
    Publication date: January 6, 2022
    Inventors: Ryo HARADA, Akira KISHIMOTO
  • Patent number: 11185814
    Abstract: The absorption agent of the present invention contains water, an amine compound, and an organic solvent, and a value obtained by subtracting a solubility parameter of the organic solvent from a solubility parameter of the amine compound is 1.1 (cal/cm3)1/2 or more and 4.2 (cal/cm3)1/2 or less. The method for separation and recovery of an acidic compound of the present invention includes the steps of: bringing a mixed gas containing an acidic compound into contact with an absorption agent containing water, an amine compound, and an organic solvent to absorb the acidic compound into the absorption agent; causing the absorption agent that has absorbed the acidic compound to be phase-separated into a first phase containing the acidic compound in a high content and a second phase containing the acidic compound in a low content; and heating the first phase to release the acidic compound from the first phase.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: November 30, 2021
    Assignees: KOBE STEEL, LTD., NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY
    Inventors: Akira Matsuoka, Akira Kishimoto, Hiroshi Machida, Hirotoshi Horizoe
  • Publication number: 20210257665
    Abstract: A nonaqueous electrolyte secondary battery including a positive electrode, a negative electrode, and a nonaqueous electrolyte, in which the positive electrode includes, as an active material, a lithium-transition metal composite oxide that has an ?-NaFeO2-type crystal structure, and is represented by the general formula Li1+?Me1??O2 (0<?, Me is a transition metal element containing Ni and Mn, or containing Ni, Mn, and Co), and has a diffraction peak observed in the range of 20° or more and 22° or less in an X-ray diffraction pattern obtained with a CuK? line.
    Type: Application
    Filed: June 19, 2019
    Publication date: August 19, 2021
    Inventors: Hiromasa MURAMATSU, Shinya OTANI, Ryo HARADA, Akira KISHIMOTO
  • Publication number: 20210016226
    Abstract: A gas treatment method includes an absorption step in which a gas to be treated containing an acidic compound, such as carbon dioxide, is brought into contact, in an absorber, with a treatment liquid that absorbs the acidic compound; and a regeneration step in which the treatment liquid, having the acidic compound absorbed therein, is sent to a regenerator, and the treatment liquid is then heated to separate the acidic compound from the treatment liquid. In the regeneration step, a gas almost insoluble to the treatment liquid, such as hydrogen gas, is brought into contact with the treatment liquid.
    Type: Application
    Filed: November 12, 2018
    Publication date: January 21, 2021
    Applicants: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.), National University Corporation Tokai National Higher Education and Research System
    Inventors: Akira KISHIMOTO, Katsuya AKIYAMA, Hiroshi MACHIDA, Tsuyoshi YAMAGUCHI, Takehiro ESAKI, Koyo NORINAGA
  • Patent number: 10576412
    Abstract: A gas treatment device uses a gas to be treated which contains an acid compound that dissolves into water to produce acid and a treatment liquid which absorbs the acid compound to phase-separate, to separate an acid compound from the gas to be treated. The gas treatment device includes an absorber which brings the gas to be treated into contact with the treatment liquid; a regenerator 14 which heats the treatment liquid contacting the gas to be treated to separate an acid compound; and a liquid feeding portion which feeds the treatment liquid contacting the gas to be treated in the absorber to the regenerator. In the absorber, the treatment liquid contacting the gas to be treated phase-separates into a first phase portion having a high acid compound content and a second phase portion having a low acid compound content. The liquid feeding portion is configured to introduce, into the regenerator, the treatment liquid with the phase-separated first phase portion and second phase portion mixed.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: March 3, 2020
    Assignees: Kobe Steel, Ltd., NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY
    Inventors: Akira Kishimoto, Akira Matsuoka, Katsuya Akiyama, Makoto Nishimura, Hiroshi Machida, Tsuyoshi Yamaguchi, Takehiro Esaki, Hirotoshi Horizoe
  • Patent number: 10476108
    Abstract: A non-aqueous electrolyte solution for a secondary battery, including a boron compound represented by Formula (1). In Formula (1), R represents an alkyl group having from 1 to 12 carbon atoms, an alkenyl group having from 2 to 12 carbon atoms, or a group represented by Formula (2). In Formula (2), each of R1 to R3 independently represents a hydrogen atom, a halogen atom, an alkyl group having from 1 to 12 carbon atoms, an alkenyl group having from 2 to 12 carbon atoms, or an aryl group having from 6 to 12 carbon atoms, and * represents a bonding site with an oxygen atom in Formula (1).
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: November 12, 2019
    Assignees: MITSUI CHEMICALS, INC., GS YUASA INTERNATIONAL LTD.
    Inventors: Masataka Miyasato, Takashi Hayashi, Satoko Fujiyama, Akira Kishimoto, Hiroe Nakagawa
  • Patent number: 10449495
    Abstract: A gas treatment system includes an absorber, a liquid separator, a regenerator, a circulation mechanism and a heat transfer apparatus. The absorber contacts the gas with the treatment liquid. The liquid separator separates the treatment liquid having been in contact with the gas into a first phase portion having a high content of the acidic compound and a second phase portion having a low content of the acidic compound. The regenerator heats the first phase portion to eliminate the acidic compound from the first phase portion. The circulation mechanism recycles the second phase portion and the treatment liquid from which the acidic compound has been eliminated by the regenerator, in the absorber as a treatment liquid with which the gas is to be contacted. The heat transfer apparatus transfers heat from the treatment liquid discharged by the absorber and from the gas having undergone separation of the acidic compound, to the treatment liquid in the regenerator.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: October 22, 2019
    Assignee: Kobe Steel, Ltd.
    Inventors: Akira Kishimoto, Akira Matsuoka, Norihide Maeda, Makoto Nishimura
  • Patent number: 10272358
    Abstract: A distillation apparatus includes a separator, a cooler, a heater, and a heat collection circuit. The heat collection circuit includes a circulation channel, a compressor, an expanding mechanism, a storing section capable of storing a working medium in a liquid state, and a circulation-amount adjusting section that adjusts a circulation amount of the working medium. The circulation-amount adjusting section adjusts an outflow amount of the working medium, which is stored in the storing section, to the circulation channel or an inflow amount of the working medium, which is circulating in the circulation channel, to the storing section such that the circulation amount increases or decreases according to an increase or a decrease in a flow rate of the first output fluid.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: April 30, 2019
    Assignee: Kobe Steel, Ltd.
    Inventors: Akira Kishimoto, Keiichiro Tomari, Masatake Toshima, Makoto Nishimura
  • Publication number: 20190105606
    Abstract: A gas sorbent is characterized in that a gas sorbing material that undergoes a phase change from solid to liquid at time of gas sorption and also undergoes a phase change from liquid to solid at time of gas desorption is supported in a carrier and the sorbent keeps its solid-like outer shape before/after the phase changes of the gas sorbing material.
    Type: Application
    Filed: March 10, 2017
    Publication date: April 11, 2019
    Inventors: Kentaro Ueda, Akira Kishimoto, Saki Nakayama
  • Publication number: 20190099710
    Abstract: A carbon dioxide sorbent characterized in that carbon dioxide sorbing material incorporated in pores of the porous inorganic particles is sealed in the pores with a resin.
    Type: Application
    Filed: March 10, 2017
    Publication date: April 4, 2019
    Inventors: Kentaro Ueda, Akira Kishimoto, Junji Oshima
  • Publication number: 20190001259
    Abstract: The absorption agent of the present invention contains water, an amine compound, and an organic solvent, and a value obtained by subtracting a solubility parameter of the organic solvent from a solubility parameter of the amine compound is 1.1 (cal/cm3)1/2 or more and 4.2 (cal/cm3)1/2 or less.
    Type: Application
    Filed: December 13, 2016
    Publication date: January 3, 2019
    Applicants: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.), NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY
    Inventors: Akira MATSUOKA, Akira KISHIMOTO, Hiroshi MACHIDA, Hirotoshi HORIZOE
  • Publication number: 20180311610
    Abstract: A gas treatment device uses a gas to be treated which contains an acid compound that dissolves into water to produce acid and a treatment liquid which absorbs the acid compound to phase-separate, to separate an acid compound from the gas to be treated. The gas treatment device includes an absorber which brings the gas to be treated into contact with the treatment liquid; a regenerator 14 which heats the treatment liquid contacting the gas to be treated to separate an acid compound; and a liquid feeding portion which feeds the treatment liquid contacting the gas to be treated in the absorber to the regenerator. In the absorber, the treatment liquid contacting the gas to be treated phase-separates into a first phase portion having a high acid compound content and a second phase portion having a low acid compound content. The liquid feeding portion is configured to introduce, into the regenerator, the treatment liquid with the phase-separated first phase portion and second phase portion mixed.
    Type: Application
    Filed: April 27, 2018
    Publication date: November 1, 2018
    Applicants: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.), NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY
    Inventors: Akira KISHIMOTO, Akira MATSUOKA, Katsuya AKIYAMA, Makoto NISHIMURA, Hiroshi MACHIDA, Tsuyoshi YAMAGUCHI, Takehiro ESAKI, Hirotoshi HORIZOE