Patents by Inventor Hajime Ota

Hajime Ota 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: 11196235
    Abstract: An electrode material includes a composite including a core wire that is composed of a nickel base material containing 96% by mass or more of Ni and a covering that covers an outer peripheral surface of the core wire and that does not cover but exposes an end face of the core wire. The covering is composed of a nickel alloy containing 10% by mass or more and 30% by mass or less of Cr and 0.1% by mass or more and 6% by mass or less of Al. The composite has a specific resistance of less than 50 ??·cm.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: December 7, 2021
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hajime Ota, Yasuhisa Uehara
  • Publication number: 20210252474
    Abstract: A fibrous granulation binder that is for active carbon granules that are formed from aggregates of active carbon particles and has a D50 particle size, as measured by laser diffraction, of 3.5-86.7 ?m. When a fibrous binder is used to produce active carbon granules, setting an appropriate particle size for the fibrous binder makes it possible to reliably produce high-strength active carbon granules.
    Type: Application
    Filed: April 1, 2019
    Publication date: August 19, 2021
    Inventors: Kazuhiro SATO, Masanari TOYAMA, Hirohito NAKAJIMA, Takeyuki YAMAMOTO, Takahisa ISHIKAWA, Hiroki MAENAMI, Hajime OTA, Takao OTSUKA, Daiki HONDA, Hiroto TASAKI
  • Publication number: 20210252473
    Abstract: An active carbon molded body that comprises a plurality of active carbon granules that are foiled from aggregates of active carbon particles. The active carbon granules include a fibrous granulation binder. A plurality of communicating holes are foamed in the active carbon molded body. A pore size distribution curve obtained for the active carbon molded body by a mercury intrusion has: a first peak that is from first pores that are famed between active carbon particles; and a second peak that is from second pores that are foamed between active carbon particles and is for a smaller pore size than the first peak. The present invention thereby provides an active carbon molded body that has high water purification capacity and has a filtration flow rate that is at least a prescribed value.
    Type: Application
    Filed: April 1, 2019
    Publication date: August 19, 2021
    Inventors: Kazuhiro SATO, Masanari TOYAMA, Hirohito NAKAJIMA, Takeyuki YAMAMOTO, Takahisa ISHIKAWA, Hiroki MAENAMI, Hajime OTA, Takao OTSUKA, Daiki HONDA, Hiroto TASAKI
  • Publication number: 20210245134
    Abstract: An active carbon molded body that comprises a plurality of active carbon granules that are formed from aggregates of active carbon particles. The active carbon granules include a fibrous granulation binder. The active carbon molded body is formed as a result of the plurality of active carbon granules being aggregated by means of the fibrous granulation binder in the active carbon granules. The present invention is also an active carbon molded body production method in which active carbon granules that have been formed by aggregating active carbon particles by means of a fibrous binder are molded by simultaneous application of heat and pressure without separate addition of a molding binder. The present invention thereby provides: an active carbon molded body that has high purification capacity and good production efficiency; and a production method for the active carbon molded body.
    Type: Application
    Filed: April 1, 2019
    Publication date: August 12, 2021
    Inventors: Kazuhiro SATO, Masanari TOYAMA, Hirohito NAKAJIMA, Takeyuki YAMAMOTO, Takahisa ISHIKAWA, Hiroki MAENAMI, Hajime OTA, Takao OTSUKA, Daiki HONDA, Hiroto TASAKI
  • Publication number: 20210242665
    Abstract: An electrode material includes a composite including a core wire that is composed of a nickel base material containing 96% by mass or more of Ni and a covering that covers an outer peripheral surface of the core wire and that does not cover but exposes an end face of the core wire. The covering is composed of a nickel alloy containing 10% by mass or more and 30% by mass or less of Cr and 0.1% by mass or more and 6% by mass or less of Al. The composite has a specific resistance of less than 50 ??·cm.
    Type: Application
    Filed: February 7, 2018
    Publication date: August 5, 2021
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hajime OTA, Yasuhisa UEHARA
  • Publication number: 20200282377
    Abstract: Provided is a granular activated carbon which has a filtered flow rate of a predetermined value or higher, and a high water purification performance; and a method for manufacturing the same. A granular activated carbon comprises a plurality of activated carbon granules and a binder for binding the plurality of activated carbon granules, wherein the binder is composed of net-like fibers. Also, a method for manufacturing the granular activated carbon includes a step for spraying and drying slurry which is obtained by dispersing the activated carbon granules and the fibers in water.
    Type: Application
    Filed: August 6, 2018
    Publication date: September 10, 2020
    Applicant: LIXIL Corporation
    Inventors: Kazuhiro SATO, Masanari TOYAMA, Hirohito NAKAJIMA, Takeyuki YAMAMOTO, Takahisa ISHIKAWA, Hiroki MAENAMI, Naoya TAMURA, Hajime OTA
  • Patent number: 10731235
    Abstract: There is provided a wire for a reed switch used for a material of a reed piece comprised by a reed switch, the wire being composed of an iron-group alloy containing Fe and 0 mass % or more and less than 10 mass % of Ni, with a total content of the Fe and the Ni satisfying 10 mass % or more and less than 20 mass %, with a balance of Co and an impurity, the iron-group alloy having a cubic crystal structure, the wire having a Curie temperature of 900° C. or higher and a specific resistance of 15 ??·cm or less at normal temperature, a ratio of a thermal expansion coefficient of a glass tube comprised by the reed switch to a thermal expansion coefficient of the wire for the reed switch being 90% or more, the wire having a diameter of 1 mm or less.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: August 4, 2020
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hajime Ota, Tetsuya Kuwabara, Kazuo Yamazaki, Naoki Sugihara, Norimasa Kawano, Hiroyasu Torazawa
  • Patent number: 10323303
    Abstract: An electrode material is composed of at least 0.2 mass % and at most 1.0 mass % of Y, at least 0 mass % and at most 0.2 mass % of Al, at least 0.2 mass % and at most 1.6 mass % of Si, at least 0.05 mass % and at most 1.0 mass % of Cr, at least 0.05 mass % and at most 0.5 mass % of Ti, at least 0.1 mass % and at most 0.5 mass in total of one or more elements selected from among Yb, Sb, Ir, Zr, Hf, Pt, Re, Pd, Rh, Ru, Nb, V, W, Mo, and Ta, and a remainder composed of Ni and an inevitable impurity.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: June 18, 2019
    Assignees: Sumitomo Electric Industries, Ltd., DENSO CORPORATION
    Inventors: Hajime Ota, Kazuo Yamazaki, Naoki Sugihara, Nobuo Abe
  • Publication number: 20190017152
    Abstract: There is provided a wire for a reed switch used for a material of a reed piece comprised by a reed switch, the wire being composed of an iron-group alloy containing Fe and 0 mass % or more and less than 10 mass % of Ni, with a total content of the Fe and the Ni satisfying 10 mass % or more and less than 20 mass %, with a balance of Co and an impurity, the iron-group alloy having a cubic crystal structure, the wire having a Curie temperature of 900° C. or higher and a specific resistance of 15 ??·cm or less at normal temperature, a ratio of a thermal expansion coefficient of a glass tube comprised by the reed switch to a thermal expansion coefficient of the wire for the reed switch being 90% or more, the wire having a diameter of 1 mm or less.
    Type: Application
    Filed: June 24, 2016
    Publication date: January 17, 2019
    Applicants: Sumitomo Electric Industries, Ltd., STANDEX ELECTRONICS JAPAN CORPORATION
    Inventors: Hajime OTA, Tetsuya KUWABARA, Kazuo YAMAZAKI, Naoki SUGIHARA, Norimasa KAWANO, Hiroyasu TORAZAWA
  • Publication number: 20180363102
    Abstract: An electrode material is composed of at least 0.2 mass % and at most 1.0 mass % of Y, at least 0 mass % and at most 0.2 mass % of Al, at least 0.2 mass % and at most 1.6 mass % of Si, at least 0.05 mass % and at most 1.0 mass % of Cr, at least 0.05 mass % and at most 0.5 mass % of Ti, at least 0.1 mass % and at most 0.5 mass in total of one or more elements selected from among Yb, Sb, Ir, Zr, Hf, Pt, Re, Pd, Rh, Ru, Nb, V, W, Mo, and Ta, and a remainder composed of Ni and an inevitable impurity.
    Type: Application
    Filed: October 31, 2016
    Publication date: December 20, 2018
    Applicants: Sumitomo Electric Industries, Ltd., DENSO CORPORATION
    Inventors: Hajime OTA, Kazuo YAMAZAKI, Naoki SUGIHARA, Nobuo ABE
  • Patent number: 10020126
    Abstract: A three-dimensional network aluminum porous body which enables to produce an electrode continuously, an electrode using the aluminum porous body, and a method for producing the electrode is disclosed. A long sheet-shaped three-dimensional network aluminum porous body is provided to be used as a base material in a method for producing an electrode including at least winding off, a thickness adjustment step, a lead welding step, an active material filling step, a drying step, a compressing step, a cutting step and winding-up, wherein the three-dimensional network aluminum porous body has a tensile strength of 0.2 MPa or more and 5 MPa or less.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: July 10, 2018
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC TOYAMA CO., LTD.
    Inventors: Akihisa Hosoe, Kazuki Okuno, Hajime Ota, Koutarou Kimura, Kengo Goto, Junichi Nishimura, Hideaki Sakaida
  • Patent number: 9711801
    Abstract: Provided are a three-dimensional net-like aluminum porous body in which the diameter of cells in the porous body is uneven in the thickness direction of the porous body; a current collector and an electrode each using the aluminum porous body; and methods for producing these members. The porous body is a three-dimensional net-like aluminum porous body in a sheet form, for a current collector, in which the diameter of cells in the porous body is uneven in the thickness direction of the porous body. When a cross section in the thickness direction of the three-dimensional net-like aluminum porous body is divided into three regions of a region 1, a region 2 and a region 3 in this order, the average cell diameter of the regions 1 and 3 is preferably different from the cell diameter of the region 2.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: July 18, 2017
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC TOYAMA CO., LTD.
    Inventors: Nobuhiro Ota, Akihisa Hosoe, Masatoshi Majima, Koji Nitta, Hajime Ota, Kazuki Okuno, Koutaro Kimura, Kengo Goto, Junichi Nishimura
  • Patent number: 9702838
    Abstract: A sample composed of a nickel-based metal is immersed in a corrosive solution (aqueous solution containing an acid and sodium chloride). The sample that has been immersed in the corrosive solution is exposed to a flame of engine oil, and further heated. By immersing the sample in the particular corrosive solution, a Ni-enriched phase which is deficient in additional elements and in which the Ni concentration increases is formed in a surface layer region of the sample. By exposing the sample having the Ni-enriched phase to the flame of the engine oil, components in the engine oil are activated and brought into contact with the sample to form a low-melting point phase in the surface layer region of the sample. By heating the sample having the low-melting point phase to melt the low-melting point phase and resolidifying the low-melting point phase, particles and the like can be formed depending on the type of material of the sample.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: July 11, 2017
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hajime Ota, Taichiro Nishikawa, Kazuo Yamazaki, Masao Sakuta, Takeshi Tokuda
  • Patent number: 9570215
    Abstract: A method for manufacturing a superconducting wire includes the following steps. A laminate metal having a first metal layer and a Ni layer formed on the first metal layer is prepared. An intermediate layer (20) is formed on the Ni layer of the laminate metal. A superconducting layer (30) is formed on the intermediate layer (20). By subjecting the laminate metal to a heat treatment after at least either of the step of forming a intermediate layer (20) and the step of forming a superconducting layer (30), a nonmagnetic Ni alloy layer (12) is formed from the laminate metal.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: February 14, 2017
    Assignees: Sumitomo Electric Industries, Ltd., TOYO KOHAN CO., LTD.
    Inventor: Hajime Ota
  • Patent number: 9553300
    Abstract: The invention offers an electrode material that can accomplish both high capacity and high output and a battery, a nonaqueous-electrolyte battery, and a capacitor all incorporating the electrode material. The electrode material has a sheet-shaped aluminum porous body carrying an active material. The above-described aluminum porous body has a skeleton structure that is formed of an aluminum layer and that has a vacant space at the interior. When observed by performing cutting in a direction parallel to the direction of thickness of the sheet, the above-described vacant space in the skeleton structure has an average area of 500 ?m2 or more and 6,000 ?m2 or less.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: January 24, 2017
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kazuki Okuno, Kengo Goto, Koutarou Kimura, Hajime Ota, Junichi Nishimura, Akihisa Hosoe
  • Patent number: 9490550
    Abstract: Provided are an aluminum-based terminal fitting in which a Sn layer has high peel resistance, and a terminal connecting structure of an electric wire provided with the terminal fitting. The aluminum-based terminal fitting includes a wire barrel portion (110) for connection to a conductor (210) constituted by aluminum or an aluminum alloy and provided in an electric wire (200), and a fitting portion (female fitting portion (130) or male fitting portion (140)) provided to extend from the wire barrel portion (110) and electrically connected to a separate terminal fitting. A Sn layer formed directly on a base material constituting the terminal fitting is provided on the contact region in the fitting portion.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: November 8, 2016
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Takuji Otsuka, Hiroki Hirai, Junichi Ono, Kingo Furukawa, Teruyoshi Munekata, Hajime Ota, Yoshihiro Nakai, Taichiro Nishikawa, Tetsuya Kuwabara, Yoshiyuki Takaki, Hiroyuki Kobayashi
  • Patent number: 9484570
    Abstract: It is an object of the present invention to provide a method for producing an electrode for an electrochemical element, which can easily adjust a capacity and can produce the electrochemical element at low cost. The method for producing an electrode for an electrochemical element of the present invention includes a thickness adjustment step of compressing an aluminum porous body having continuous pores to adjust the thickness of the aluminum porous body to a predetermined thickness, and a filling step of filling the aluminum porous body, the thickness of which is adjusted, with an active material.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: November 1, 2016
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC TOYAMA CO., LTD.
    Inventors: Akihisa Hosoe, Kazuki Okuno, Hajime Ota, Koutarou Kimura, Kengo Goto, Junichi Nishimura, Hideaki Sakaida
  • Publication number: 20160284482
    Abstract: It is an object of the present invention to provide a current collector including an aluminum porous body suitable for an electrode for a nonaqueous electrolyte battery and an electrode for a capacitor electrode, and an electrode using the current collector. In the three-dimensional network aluminum porous body for a current collector of the present invention, when a sheet-shaped three-dimensional aluminum porous body is divided in the width direction into a central region and two end regions with the central region situated therebetween, the weight per unit area of aluminum in the aluminum porous body at the two end regions is larger than the weight per unit area of aluminum in the aluminum porous body at the central region.
    Type: Application
    Filed: June 6, 2016
    Publication date: September 29, 2016
    Inventors: Akihisa HOSOE, Kazuki OKUNO, Hajime OTA, Koutarou KIMURA, Kengo GOTO, Hideaki SAKAIDA, Junichi NISHIMURA
  • Patent number: 9390866
    Abstract: It is an object of the present invention to provide a current collector including an aluminum porous body suitable for an electrode for a nonaqueous electrolyte battery and an electrode for a capacitor electrode, and an electrode using the current collector. In the three-dimensional network aluminum porous body for a current collector of the present invention, when a sheet-shaped three-dimensional aluminum porous body is divided in the width direction into a central region and two end regions with the central region situated therebetween, the weight per unit area of aluminum in the aluminum porous body at the two end regions is larger than the weight per unit area of aluminum in the aluminum porous body at the central region.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: July 12, 2016
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC TOYAMA CO., LTD.
    Inventors: Akihisa Hosoe, Kazuki Okuno, Hajime Ota, Koutarou Kimura, Kengo Goto, Hideaki Sakaida, Junichi Nishimura
  • Patent number: 9337492
    Abstract: It is an object of the present invention to provide an electrochemical element which has a high capacity and is low in cost. The electrochemical element of the present invention is an electrochemical element including an electrode for an electrochemical element, wherein a current collector of positive electrode and/or a current collector of negative electrode is a metal porous body having continuous pores and a mixture containing an active material is filled into the continuous pores.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: May 10, 2016
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC TOYAMA CO., LTD.
    Inventors: Akihisa Hosoe, Kazuki Okuno, Hajime Ota, Koutarou Kimura, Kengo Goto, Junichi Nishimura, Hideaki Sakaida