Patents by Inventor Kenji Ikeuchi

Kenji Ikeuchi 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: 10669646
    Abstract: Provided are nickel manganese composite hydroxide particles having a small and uniform particle size and having a double structure which enables to obtain a cathode active material having a hollow structure, and a manufacturing method thereof. When obtaining the nickel manganese composite hydroxide by a reaction crystallization, using an aqueous solution for nucleation, which includes at least a metallic compound that contains nickel, a metallic compound that contains manganese and an ammonium ion donor and controlling the pH value that is measured at a standard solution temperature of 25° C. is 10.5 to 12.0, nucleation is performed in an oxidizing atmosphere in which the oxygen concentration is greater than 1% by volume, and then nuclei are grown by switching the atmosphere from the oxidizing atmosphere to a mixed atmosphere of oxygen and inert gas in which the oxygen concentration is 1% by volume or less.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: June 2, 2020
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hiroyuki Toya, Kensaku Mori, Shin Imaizumi, Kenji Ikeuchi, Toshiyuki Osako
  • Publication number: 20200044250
    Abstract: An object of the present invention is to provide nickel cobalt manganese composite hydroxide particles having a small particle diameter and a uniform particle size distribution, and a method for producing the same. A method for producing a nickel cobalt manganese composite hydroxide by a crystallization reaction is provided. The method includes: a nucleation step of performing nucleation by controlling a pH of an aqueous solution for nucleation including metal compounds containing nickel, cobalt and manganese, and an ammonium ion donor to 12.0 to 14.0 in teams of the pH as measured at a liquid temperature of 25° C. as a standard; and a particle growth step of growing nuclei by controlling a pH of an aqueous solution for particle growth containing nuclei formed in the nucleation step to 10.5 to 12.0 in terms of the pH as measured at a liquid temperature of 25° C. as a standard.
    Type: Application
    Filed: October 3, 2019
    Publication date: February 6, 2020
    Applicants: SUMITOMO METAL MINING CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki TOYA, Shin IMAIZUMI, Kensaku MORI, Atsushi FUKUI, Kenji IKEUCHI, Kazuomi RYOSHI, Toshiyuki OSAKO, Hiroki NAGAI
  • Patent number: 10516165
    Abstract: An object of the present invention is to provide nickel cobalt manganese composite hydroxide particles having a small particle diameter and a uniform particle size distribution, and a method for producing the same. A method for producing a nickel cobalt manganese composite hydroxide by a crystallization reaction is provided. The method includes: a nucleation step of performing nucleation by controlling a pH of an aqueous solution for nucleation including metal compounds containing nickel, cobalt and manganese, and an ammonium ion donor to 12.0 to 14.0 in terms of the pH as measured at a liquid temperature of 25° C. as a standard; and a particle growth step of growing nuclei by controlling a pH of an aqueous solution for particle growth containing nuclei formed in the nucleation step to 10.5 to 12.0 in terms of the pH as measured at a liquid temperature of 25° C. as a standard.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: December 24, 2019
    Assignees: SUMITOMO METAL MINING CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki Toya, Shin Imaizumi, Kensaku Mori, Atsushi Fukui, Kenji Ikeuchi, Kazuomi Ryoshi, Toshiyuki Osako, Hiroki Nagai
  • Patent number: 10490815
    Abstract: An object of the present invention is to provide nickel cobalt manganese composite hydroxide particles having a small particle diameter and a uniform particle size distribution, and a method for producing the same. [Solution] A method for producing a nickel cobalt manganese composite hydroxide by a crystallization reaction is provided. The method includes: a nucleation step of performing nucleation by controlling a pH of an aqueous solution for nucleation including metal compounds containing nickel, cobalt and manganese, and an ammonium ion donor to 12.0 to 14.0 in terms of the pH as measured at a liquid temperature of 25° C. as a standard; and a particle growth step of growing nuclei by controlling a pH of an aqueous solution for particle growth containing nuclei formed in the nucleation step to 10.5 to 12.0 in terms of the pH as measured at a liquid temperature of 25° C. as a standard.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: November 26, 2019
    Assignees: SUMITOMO METAL MINING CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki Toya, Shin Imaizumi, Kensaku Mori, Atsushi Fukui, Kenji Ikeuchi, Kazuomi Ryoshi, Toshiyuki Osako, Hiroki Nagai
  • Publication number: 20180347069
    Abstract: Provided are nickel manganese composite hydroxide particles having a small and uniform particle size and having a double structure which enables to obtain a cathode active material having a hollow structure, and a manufacturing method thereof. When obtaining the nickel manganese composite hydroxide by a reaction crystallization, using an aqueous solution for nucleation, which includes at least a metallic compound that contains nickel, a metallic compound that contains manganese and an ammonium ion donor and controlling the pH value that is measured at a standard solution temperature of 25° C. is 10.5 to 12.0, nucleation is performed in an oxidizing atmosphere in which the oxygen concentration is greater than 1% by volume, and then nuclei are grown by switching the atmosphere from the oxidizing atmosphere to a mixed atmosphere of oxygen and inert gas in which the oxygen concentration is 1% by volume or less.
    Type: Application
    Filed: May 24, 2018
    Publication date: December 6, 2018
    Applicant: SUMITO METAL MINING CO., LTD.
    Inventors: Hiroyuki TOYA, Kensaku MORI, Shin IMAIZUMI, Kenji IKEUCHI, Toshiyuki OSAKO
  • Publication number: 20180205080
    Abstract: An object of the present invention is to provide nickel cobalt manganese composite hydroxide particles having a small particle diameter and a uniform particle size distribution, and a method for producing the same. [Solution] A method for producing a nickel cobalt manganese composite hydroxide by a crystallization reaction is provided. The method includes: a nucleation step of performing nucleation by controlling a pH of an aqueous solution for nucleation including metal compounds containing nickel, cobalt and manganese, and an ammonium ion donor to 12.0 to 14.0 in terms of the pH as measured at a liquid temperature of 25° C. as a standard; and a particle growth step of growing nuclei by controlling a pH of an aqueous solution for particle growth containing nuclei formed in the nucleation step to 10.5 to 12.0 in terms of the pH as measured at a liquid temperature of 25° C. as a standard.
    Type: Application
    Filed: March 12, 2018
    Publication date: July 19, 2018
    Applicants: SUMITOMO METAL MINING CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki TOYA, Shin Imaizumi, Kensaku Mori, Atsushi Fukui, Kenji Ikeuchi, Kazuomi Ryoshi, Toshiyuki Osako, Hiroki Nagai
  • Patent number: 10017875
    Abstract: Provided are nickel manganese composite hydroxide particles having a small and uniform particle size and having a double structure which enables to obtain a cathode active material having a hollow structure, and a manufacturing method thereof. When obtaining the nickel manganese composite hydroxide by a reaction crystallization, using an aqueous solution for nucleation, which includes at least a metallic compound that contains nickel, a metallic compound that contains manganese and an ammonium ion donor and controlling the pH value that is measured at a standard solution temperature of 25° C. is 10.5 to 12.0, nucleation is performed in an oxidizing atmosphere in which the oxygen concentration is greater than 1% by volume, and then nuclei are grown by switching the atmosphere from the oxidizing atmosphere to a mixed atmosphere of oxygen and inert gas in which the oxygen concentration is 1% by volume or less.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: July 10, 2018
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hiroyuki Toya, Kensaku Mori, Shin Imaizumi, Kenji Ikeuchi, Toshiyuki Osako
  • Patent number: 9954224
    Abstract: An object of the present invention is to provide nickel cobalt manganese composite hydroxide particles having a small particle diameter and a uniform particle size distribution, and a method for producing the same. [Solution] A method for producing a nickel cobalt manganese composite hydroxide by a crystallization reaction is provided. The method includes: a nucleation step of performing nucleation by controlling a pH of an aqueous solution for nucleation including metal compounds containing nickel, cobalt and manganese, and an ammonium ion donor to 12.0 to 14.0 in terms of the pH as measured at a liquid temperature of 25° C. as a standard; and a particle growth step of growing nuclei by controlling a pH of an aqueous solution for particle growth containing nuclei formed in the nucleation step to 10.5 to 12.0 in terms of the pH as measured at a liquid temperature of 25° C. as a standard.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: April 24, 2018
    Assignees: SUMITOMO METAL MINING CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISH
    Inventors: Hiroyuki Toya, Shin Imaizumi, Kensaku Mori, Atsushi Fukui, Kenji Ikeuchi, Kazuomi Ryoshi, Toshiyuki Osako, Hiroki Nagai
  • Patent number: 9890438
    Abstract: An aluminum copper clad material has excellent bonding strength and includes an aluminum layer and a copper layer that are bonded without a nickel layer interposed therebetween. The aluminum layer and the copper layer are diffusion-bonded via an Al—Cu intermetallic compound layer. The copper layer satisfies Dcs?0.5×Dcc, where Dcc represents the average crystal grain size of crystal grains in a central portion in the thickness direction of the copper layer, and Dcs represents the average crystal grain size of an interface adjacent portion C2 in the copper layer that is about 0.5 ?m apart from the interface between the copper layer and the intermetallic compound layer. The intermetallic compound layer has an average thickness of about 0.5 ?m to about 10 ?m.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: February 13, 2018
    Assignee: Hitachi Metals, Ltd.
    Inventors: Yoshimitsu Oda, Masaaki Ishio, Akio Hashimoto, Kenji Ikeuchi
  • Publication number: 20170338485
    Abstract: An object of the present invention is to provide nickel cobalt manganese composite hydroxide particles having a small particle diameter and a uniform particle size distribution, and a method for producing the same. [Solution] A method for producing a nickel cobalt manganese composite hydroxide by a crystallization reaction is provided. The method includes: a nucleation step of performing nucleation by controlling a pH of an aqueous solution for nucleation including metal compounds containing nickel, cobalt and manganese, and an ammonium ion donor to 12.0 to 14.0 in terms of the pH as measured at a liquid temperature of 25° C. as a standard; and a particle growth step of growing nuclei by controlling a pH of an aqueous solution for particle growth containing nuclei formed in the nucleation step to 10.5 to 12.0 in terms of the pH as measured at a liquid temperature of 25° C. as a standard.
    Type: Application
    Filed: August 10, 2017
    Publication date: November 23, 2017
    Applicants: SUMITOMO METAL MINING CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki TOYA, Shin IMAIZUMI, Kensaku MORI, Atsushi FUKUI, Kenji IKEUCHI, Kazuomi RYOSHI, Toshiyuki OSAKO, Hiroki NAGAI
  • Patent number: 9391318
    Abstract: Active material particles are provided that exhibit performance suitable for increasing the output of a lithium secondary battery and little deterioration due to charge-discharge cycling. The active material particles provided by the present invention have a hollow structure having secondary particles including an aggregate of a plurality of primary particles of a lithium transition metal oxide, and a hollow portion formed inside the secondary particles, and through holes that penetrates to the hollow portion from the outside are formed in the secondary particles. BET specific surface area of the active material particles is 0.5 to 1.9 m2/g.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: July 12, 2016
    Assignees: Toyota Jidosha Kabushiki Kaisha, Sumitomo Metal Mining Co., Ltd.
    Inventors: Hiroki Nagai, Masahiro Morita, Kensaku Mori, Shin Imaizumi, Kenji Ikeuchi, Toshiyuki Osako, Hiroyuki Toya
  • Publication number: 20160122842
    Abstract: An aluminum copper clad material has excellent bonding strength and includes an aluminum layer and a copper layer that are bonded without a nickel layer interposed therebetween. The aluminum layer and the copper layer are diffusion-bonded via an Al—Cu intermetallic compound layer. The copper layer satisfies Dcs?0.5×Dcc, where Dcc represents the average crystal grain size of crystal grains in a central portion in the thickness direction of the copper layer, and Dcs represents the average crystal grain size of an interface adjacent portion C2 in the copper layer that is about 0.5 ?m apart from the interface between the copper layer and the intermetallic compound layer. The intermetallic compound layer has an average thickness of about 0.5 ?m to about 10 ?m.
    Type: Application
    Filed: January 8, 2016
    Publication date: May 5, 2016
    Inventors: Yoshimitsu ODA, Masaaki ISHIO, Akio HASHIMOTO, Kenji IKEUCHI
  • Patent number: 9266188
    Abstract: An aluminum copper clad material has excellent bonding strength and includes an aluminum layer and a copper layer that are bonded without a nickel layer interposed therebetween. The aluminum layer and the copper layer are diffusion-bonded via an Al—Cu intermetallic compound layer. The copper layer satisfies Dcs?0.5×Dcc, where Dcc represents the average crystal grain size of crystal grains in a central portion in the thickness direction of the copper layer, and Dcs represents the average crystal grain size of an interface adjacent portion C2 in the copper layer that is about 0.5 ?m apart from the interface between the copper layer and the intermetallic compound layer. The intermetallic compound layer has an average thickness of about 0.5 ?m to about 10 ?m.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: February 23, 2016
    Assignee: NEOMAX MATERIALS CO., LTD.
    Inventors: Yoshimitsu Oda, Masaaki Ishio, Akio Hashimoto, Kenji Ikeuchi
  • Publication number: 20140011090
    Abstract: Provided are nickel manganese composite hydroxide particles having a small and uniform particle size and having a double structure which enables to obtain a cathode active material having a hollow structure, and a manufacturing method thereof. When obtaining the nickel manganese composite hydroxide by a reaction crystallization, using an aqueous solution for nucleation, which includes at least a metallic compound that contains nickel, a metallic compound that contains manganese and an ammonium ion donor and controlling the pH value that is measured at a standard solution temperature of 25° C. is 10.5 to 12.0, nucleation is performed in an oxidizing atmosphere in which the oxygen concentration is greater than 1% by volume, and then nuclei are grown by switching the atmosphere from the oxidizing atmosphere to a mixed atmosphere of oxygen and inert gas in which the oxygen concentration is 1% by volume or less.
    Type: Application
    Filed: March 28, 2011
    Publication date: January 9, 2014
    Inventors: Hiroyuki Toya, Kensaku Mori, Shin Imaizumi, Kenji Ikeuchi, Toshiyuki Osako
  • Publication number: 20130302687
    Abstract: Active material particles are provided that exhibit performance suitable for increasing the output of a lithium secondary battery and little deterioration due to charge-discharge cycling. The active material particles provided by the present invention have a hollow structure having secondary particles including an aggregate of a plurality of primary particles of a lithium transition metal oxide, and a hollow portion formed inside the secondary particles, and through holes that penetrates to the hollow portion from the outside are formed in the secondary particles. BET specific surface area of the active material particles is 0.5 to 1.9 m2/g.
    Type: Application
    Filed: July 12, 2013
    Publication date: November 14, 2013
    Applicants: SUMITOMO METAL MINING CO., LTD, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroki Nagai, Masahiro Morita, Kensaku Mori, Shin Imaizumi, Kenji Ikeuchi, Toshiyuki Osako, Hiroyuki Toya
  • Patent number: 8486564
    Abstract: Active material particles are provided that exhibit performance suitable for increasing the output of a lithium secondary battery and little deterioration due to charge-discharge cycling. The active material particles provided by the present invention have a hollow structure having secondary particles including an aggregate of a plurality of primary particles of a lithium transition metal oxide, and a hollow portion formed inside the secondary particles, and through holes that penetrates to the hollow portion from the outside are formed in the secondary particles. BET specific surface area of the active material particles is 0.5 to 1.9 m2/g.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: July 16, 2013
    Assignees: Toyota Jidosha Kabushiki Kaisha, Sumitomo Metal Mining Co., Ltd.
    Inventors: Hiroki Nagai, Masahiro Morita, Kensaku Mori, Shin Imaizumi, Kenji Ikeuchi, Toshiyuki Osako, Hiroyuki Toya
  • Patent number: 8465656
    Abstract: A method for manufacturing a printed circuit board enables a metal residue between wirings to be removed inexpensively without side etching of a copper layer while having sufficient insulation reliability for micro wiring working. The method includes forming a base metal layer directly at least on one face of an insulator film without an adhesive, and a copper coat layer formed on the base metal layer to form adhesiveless copper clad laminates, then forming a pattern on the adhesiveless copper clad laminates by an etching method. The etching method includes a process of etching treatment for the adhesiveless copper clad laminates with an iron (III) chloride solution or a copper (II) chloride solution containing hydrochloric acid and then, a process of treatment with an acid oxidant containing permanganate and acetic acid.
    Type: Grant
    Filed: June 23, 2008
    Date of Patent: June 18, 2013
    Assignee: Sumitomo Metal Mining Co., Ltd.
    Inventors: Harumi Nagao, Yoshiyuki Asakawa, Kenji Ikeuchi
  • Publication number: 20130071686
    Abstract: An aluminum copper clad material has excellent bonding strength and includes an aluminum layer and a copper layer that are bonded without a nickel layer interposed therebetween. The aluminum layer and the copper layer that are diffusion-bonded via an Al—Cu intermetallic compound layer. The copper layer satisfies Dcs?0.5×Dcc, where Dcc represents the average crystal grain size of crystal grains in a central portion in the thickness direction of the copper layer, and Dcs represents the average crystal grain size of an interface adjacent portion C2 in the copper layer that is about 0.5 ?m apart from the interface between the copper layer and the intermetallic compound layer. The intermetallic compound layer has an average thickness of about 0.5 ?m to about 10 ?m.
    Type: Application
    Filed: June 2, 2011
    Publication date: March 21, 2013
    Inventors: Yoshimitsu Oda, Masaaki Ishio, Akio Hashimoto, Kenji Ikeuchi
  • Publication number: 20130011331
    Abstract: Active material particles are provided that exhibit performance suitable for increasing the output of a lithium secondary battery and little deterioration due to charge-discharge cycling. The active material particles provided by the present invention have a hollow structure having secondary particles including an aggregate of a plurality of primary particles of a lithium transition metal oxide, and a hollow portion formed inside the secondary particles, and through holes that penetrates to the hollow portion from the outside are formed in the secondary particles. BET specific surface area of the active material particles is 0.5 to 1.9 m2/g.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 10, 2013
    Inventors: Hiroki Nagai, Masahiro Morita, Kensaku Mori, Shin Imaizum, Kenji Ikeuchi, Toshiyuki Osako, Hiroyuki Toya
  • Publication number: 20120282525
    Abstract: Active material particles are provided that exhibit performance suitable for increasing the output of a lithium secondary battery and little deterioration due to charge-discharge cycling. The active material particles provided by the present invention have a hollow structure having secondary particles including an aggregate of a plurality of primary particles of a lithium transition metal oxide, and a hollow portion formed inside the secondary particles, and through holes that penetrates to the hollow portion from the outside are formed in the secondary particles. BET specific surface area of the active material particles is 0.5 to 1.9 m2/g.
    Type: Application
    Filed: October 7, 2010
    Publication date: November 8, 2012
    Inventors: Hiroki Nagai, Masahiro Morita, Kensaku Mori, Shin Imaizumi, Kenji Ikeuchi, Toshiyuki Osako, Hiroyuki Toya