Patents by Inventor Hiroaki Wakayama

Hiroaki Wakayama 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: 11133512
    Abstract: A bipolar plate includes a substrate and a coating film that is formed at least on a part of a surface of the substrate. The coating film includes a phosphide having a composition represented by M2?xTixP, where M is any one or more elements selected from the group consisting of Ni, Co, Fe, Mn and Cr, and 0.1?x?1.9. The coating film preferably includes two kinds or more of the metal elements M, and preferably has a thickness ranging from 0.05 ?m or greater to 100 ?m or less.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: September 28, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Hiroaki Wakayama, Nobuaki Suzuki, Hajime Murata, Kiyoshi Yamazaki
  • Patent number: 10995412
    Abstract: An electrode set for chemical reaction includes a substrate, and electrodes for reduction and oxidation reactions alternately arranged on the same surface of the substrate.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: May 4, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Yasuhiko Takeda, Takeshi Morikawa, Naohiko Kato, Shintaro Mizuno, Masahito Shiozawa, Hiroaki Wakayama
  • Patent number: 10522275
    Abstract: A method for producing a nanoheterostructured permanent magnet includes a first step of preparing a raw material solution by dissolving, in a solvent, (1) a block copolymer comprising polymer block components that are immiscible but linked to each other, (2) a first inorganic precursor which is one of a hard magnetic material precursor and a soft magnetic material precursor, and (3) a second inorganic precursor which is the other of the hard magnetic material precursor and the soft magnetic material precursor, and a second step including a phase-separation treatment for forming a nanophase-separated, a conversion treatment for converting the hard magnetic material precursor and the soft magnetic material precursor to a hard magnetic material and a soft magnetic material, respectively, and a removal treatment for removing the block copolymer from the nanophase-separated structure.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: December 31, 2019
    Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Hiroaki Wakayama, Hirotaka Yonekura, Yasuaki Kawai
  • Publication number: 20190348687
    Abstract: A bipolar plate includes a substrate and a coating film that is formed at least on a part of a surface of the substrate. The coating film includes a phosphide having a composition represented by M2-xTixP, where M is any one or more elements selected from the group consisting of Ni, Co, Fe, Mn and Cr, and 0.1?x?1.9. The coating film preferably includes two kinds or more of the metal elements M, and preferably has a thickness ranging from 0.05 ?m or greater to 100 ?m or less.
    Type: Application
    Filed: March 4, 2019
    Publication date: November 14, 2019
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Hiroaki WAKAYAMA, Nobuaki SUZUKI, Hajime MURATA, Kiyoshi YAMAZAKI
  • Publication number: 20190284706
    Abstract: An electrode set for chemical reaction includes a substrate, and electrodes for reduction and oxidation reactions alternately arranged on the same surface of the substrate.
    Type: Application
    Filed: March 11, 2019
    Publication date: September 19, 2019
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Yasuhiko TAKEDA, Takeshi MORIKAWA, Naohiko KATO, Shintaro MIZUNO, Masahito SHIOZAWA, Hiroaki WAKAYAMA
  • Patent number: 9914666
    Abstract: A nanoheterostructure includes a first inorganic component and a second inorganic component one of which is a matrix, and the other of which is three-dimensionally and periodically arranged in the matrix, and has a three-dimensional periodic structure whose average value of one unit length of a repeated structure is 1 nm to 100 nm.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: March 13, 2018
    Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Hiroaki Wakayama, Hirotaka Yonekura, Hiromitsu Tanaka
  • Publication number: 20180016687
    Abstract: A method for producing a nanoimprint transfer body includes the steps of: forming, on a substrate, a film including a block copolymer capable of microphase separation and an inorganic precursor incorporated in one polymer block component constituting the block copolymer or a polymer phase including the polymer block component; subjecting the block copolymer to microphase separation to form a microphase separated structure including the block copolymer and the inorganic precursor incorporated in the polymer block component or the polymer phase including the polymer block component; removing organic components from the microphase separated structure to form a nanostructure of an inorganic component; and forming a nanoimprint transfer body by using the nanostructure as a master mold.
    Type: Application
    Filed: July 11, 2017
    Publication date: January 18, 2018
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Atsushi MIURA, Yuri SASAKI, Hiroaki WAKAYAMA
  • Publication number: 20170256343
    Abstract: A method for producing a nanoheterostructured permanent magnet includes a first step of preparing a raw material solution by dissolving, in a solvent, (1) a block copolymer comprising polymer block components that are immiscible but linked to each other, (2) a first inorganic precursor which is one of a hard magnetic material precursor and a soft magnetic material precursor, and (3) a second inorganic precursor which is the other of the hard magnetic material precursor and the soft magnetic material precursor, and a second step including a phase-separation treatment for forming a nanophase-separated, a conversion treatment for converting the hard magnetic material precursor and the soft magnetic material precursor to a hard magnetic material and a soft magnetic material, respectively, and a removal treatment for removing the block copolymer from the nanophase-separated structure.
    Type: Application
    Filed: May 19, 2017
    Publication date: September 7, 2017
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Hiroaki WAKAYAMA, Hirotaka YONEKURA, Yasuaki KAWAI
  • Patent number: 9754709
    Abstract: A nanoheterostructured permanent magnet includes a hard magnetic material and a soft magnetic material of which one inorganic component is a matrix, and of which the other inorganic component is three-dimensionally and periodically arranged in the matrix, in a shape selected from the group consisting of a spherical shape, a columnar shape, and a gyroid shape, the nanoheterostructured permanent magnet having a three-dimensional periodic structure whose average value of one unit length of a repeated structure is 1 nm to 100 nm.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: September 5, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Hiroaki Wakayama, Hirotaka Yonekura, Yasuaki Kawai
  • Publication number: 20150376071
    Abstract: A nanoheterostructure includes a first inorganic component and a second inorganic component one of which is a matrix, and the other of which is three-dimensionally and periodically arranged in the matrix, and has a three-dimensional periodic structure whose average value of one unit length of a repeated structure is 1 nm to 100 nm.
    Type: Application
    Filed: September 9, 2015
    Publication date: December 31, 2015
    Inventors: Hiroaki WAKAYAMA, Hirotaka YONEKURA, Hiromitsu TANAKA
  • Patent number: 9130214
    Abstract: An electrode material for lithium secondary battery comprises a nanoheterostructure which contains a lithium-ion conductor and an electrode active substance of which one inorganic component is a matrix, and of which the other inorganic component is three-dimensionally and periodically arranged in the matrix, and has a three-dimensional periodic structure whose average value of one unit length of a repeated structure is 1 nm to 100 nm.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: September 8, 2015
    Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Hiroaki Wakayama, Hirotaka Yonekura, Yasuaki Kawai
  • Publication number: 20140370321
    Abstract: A nanoheterostructured permanent magnet includes a hard magnetic material and a soft magnetic material of which one inorganic component is a matrix, and of which the other inorganic component is three-dimensionally and periodically arranged in the matrix, in a shape selected from the group consisting of a spherical shape, a columnar shape, and a gyroid shape, the nanoheterostructured permanent magnet having a three-dimensional periodic structure whose average value of one unit length of a repeated structure is 1 nm to 100 nm.
    Type: Application
    Filed: September 14, 2012
    Publication date: December 18, 2014
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Hiroaki Wakayama, Hirotaka Yonekura, Yasuaki Kawai
  • Publication number: 20130084501
    Abstract: An electrode material for lithium secondary battery comprises a nanoheterostructure which contains a lithium-ion conductor and an electrode active substance of which one inorganic component is a matrix, and of which the other inorganic component is three-dimensionally and periodically arranged in the matrix, and has a three-dimensional periodic structure whose average value of one unit length of a repeated structure is 1 nm to 100 nm.
    Type: Application
    Filed: September 14, 2012
    Publication date: April 4, 2013
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Hiroaki WAKAYAMA, Hirotaka YONEKURA, Yasuaki KAWAI
  • Publication number: 20130037740
    Abstract: A nanoheterostructure includes a first inorganic component and a second inorganic component one of which is a matrix, and the other of which is three-dimensionally and periodically arranged in the matrix, and has a three-dimensional periodic structure whose average value of one unit length of a repeated structure is 1 nm to 100 nm.
    Type: Application
    Filed: March 16, 2011
    Publication date: February 14, 2013
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Hiroaki Wakayama, Hirotaka Yonekura, Hiromitsu Tanaka
  • Patent number: 7882635
    Abstract: A method for producing an ink-jet head includes forming a buffer layer on an upper surface of a vibration plate, and forming a piezoelectric precursor layer on an entire upper surface of a surface layer, the piezoelectric precursor layer being converted into a piezoelectric sheet. The buffer layer is formed of a material with which mutual diffusion between the piezoelectric precursor layer and the buffer layer is hardly caused as compared with mutual diffusion between the piezoelectric precursor layer and the vibration plate with which no buffer layer is provided. A stack, in which the buffer layer and the piezoelectric precursor layer are formed, is heated at a predetermined temperature, and the piezoelectric precursor layer is calcinated to form the piezoelectric sheet. It is possible to suppress the deterioration of the performance of the piezoelectric member.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: February 8, 2011
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Hiroaki Wakayama, Kazuo Kobayashi
  • Patent number: 7858684
    Abstract: An object of the invention is to provide a solid composite material easily molded into a desirable shape and superior both in hardness and toughness, and a method of producing the same. A solid composite material 1 having an organic matrix of fibrous organic polymers of nonionic polymer and fine particles of a crystalline metal carbonate having an average diameter of 30 nm or less dispersed therein and a production method thereof. The production method includes mixing, gelation, and reactive precipitation steps. In the mixing step, a liquid mixture is prepared by mixing a hydrophilic nonionic polymers with a metal ion source in water. In the gelation step, the nonionic polymer in the liquid mixture is allowed to gel, to give a gel solvent. In the reactive precipitation step, a metal carbonate is precipitated by adding a carbonic acid source to the gel solvent.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: December 28, 2010
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Hiroaki Wakayama, Yoshiaki Fukushima
  • Publication number: 20090142256
    Abstract: A method capable of easily producing a nanostructured material having regular nanoscale arrangement. The method comprises a raw material solution preparation step of preparing a raw material solution by dissolving, in a solvent, a block copolymer comprising a polymer block component “A” and a polymer block component “B” which are immiscible to each other, and an inorganic precursor which coordinates with the polymer block component “A” but does not coordinate with the polymer block component “B”; and a nanostructure-forming step of forming a nanophase-separated structure “10” in which a polymer phase “1A” comprising the polymer block component “A” with which the inorganic precursor is coordinated, and a polymer phase “1B” comprising the polymer block component “B” are regularly arranged by self-assembly. A nanostructured material can be obtained by this method.
    Type: Application
    Filed: November 26, 2008
    Publication date: June 4, 2009
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Hiroaki WAKAYAMA, Yoshiaki FUKUSHIMA
  • Publication number: 20090038152
    Abstract: A method for producing an ink-jet head includes forming a buffer layer on an upper surface of a vibration plate, and forming a piezoelectric precursor layer on an entire upper surface of a surface layer, the piezoelectric precursor layer being converted into a piezoelectric sheet. The buffer layer is formed of a material with which mutual diffusion between the piezoelectric precursor layer and the buffer layer is hardly caused as compared with mutual diffusion between the piezoelectric precursor layer and the vibration plate with which no buffer layer is provided. A stack, in which the buffer layer and the piezoelectric precursor layer are formed, is heated at a predetermined temperature, and the piezoelectric precursor layer is calcinated to form the piezoelectric sheet. It is possible to suppress the deterioration of the performance of the piezoelectric member.
    Type: Application
    Filed: September 25, 2008
    Publication date: February 12, 2009
    Applicant: Brother Kogyo Kabushiki Kaisha
    Inventors: Hiroaki Wakayama, Kazuo Kobayashi
  • Publication number: 20080085964
    Abstract: An object of the invention is to provide a solid composite material easily molded into a desirable shape and superior both in hardness and toughness, and a method of producing the same. A solid composite material 1 having an organic matrix of fibrous organic polymers of nonionic polymer and fine particles of a crystalline metal carbonate having an average diameter of 30 nm or less dispersed therein and a production method thereof. The production method includes mixing, gelation, and reactive precipitation steps. In the mixing step, a liquid mixture is prepared by mixing a hydrophilic nonionic polymers with a metal ion source in water. In the gelation step, the nonionic polymer in the liquid mixture is allowed to gel, to give a gel solvent. In the reactive precipitation step, a metal carbonate is precipitated by adding a carbonic acid source to the gel solvent.
    Type: Application
    Filed: October 2, 2007
    Publication date: April 10, 2008
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Hiroaki Wakayama, Yoshiaki Fukushima
  • Patent number: 7198825
    Abstract: A pressure container is filled with a base material having at least part of the surface coated with an organic matrix including at least one member selected from the specific functional groups, and a material solution containing a carbonate material as a material for carbonate film and an organic polymer including at least one member selected from the specific groups. In succession, by supplying CO2 into the pressure container at 2 atm or higher, a carbonate film is deposited on the surface of the organic matrix.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: April 3, 2007
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Hiroaki Wakayama, Yoshiaki Fukushima