Patents by Inventor Makoto Kuribayashi

Makoto Kuribayashi 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: 11112733
    Abstract: An image forming apparatus includes: a developing section that forms a toner image by developing an electrostatic latent image using toner. The toner satisfies the following relations: (ln?(T1)?ln?(T2))/(T1?T2)??0.14; (ln?(T2)?ln?(T3))/(T2?T3)??0.15; and (ln?(T1)?ln?(T2))/(T1?T2)<(ln?(T2)?ln?(T3))/(T2?T3), where ?(T1) represents a viscosity of the toner at 60° C., ?(T2) represents a viscosity of the toner at 90° C., and ?(T3) represents a viscosity of the toner at 130° C.).
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: September 7, 2021
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Jun Sekiya, Masataka Kuribayashi, Makoto Kamisaki, Shota Oshima
  • Publication number: 20210233785
    Abstract: A holding device includes a ceramic member and a base member joined together via a joining portion. When a second direction is perpendicular to a first direction and a third direction is perpendicular to the first and second directions, the joining portion includes a first joining part which extends through the joining portion in the second direction, as viewed in the first direction, and whose thickness in the first direction is uniform in an arbitrary cross section perpendicular to the second direction and in an arbitrary cross section perpendicular to the third direction, and at least one second joining part which is located between the first joining part and one end of the joining portion in the third direction and whose thickness in the first direction increases from the first joining part side toward the end of the joining portion in an arbitrary cross section perpendicular to the second direction.
    Type: Application
    Filed: January 8, 2019
    Publication date: July 29, 2021
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Makoto KURIBAYASHI, Masahiro INOUE, Toshimasa SAKAKIBARA
  • Publication number: 20210183679
    Abstract: A holding device manufacturing method includes a step of preparing a first joined body which includes a pre-machining ceramic member having a first surface and a fifth surface located opposite the first surface and approximately parallel to the first surface, a base member, and a joining portion disposed between the first surface of the pre-machining ceramic member and a third surface of the base member and joining the pre-machining ceramic member and the base member together. The thickness of the joining portion of the first joined body in a first direction, in which the first surface and the third surface face each other via the joining portion, increases from one end side toward the other end side of the joining portion in a second direction perpendicular to the first direction. The method includes a step of machining the fifth surface of the pre-machining ceramic member in the first joined body.
    Type: Application
    Filed: January 8, 2019
    Publication date: June 17, 2021
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Makoto KURIBAYASHI, Masahiro INOUE, Toshimasa SAKAKIBARA
  • Patent number: 10665870
    Abstract: An electrochemical reaction unit including a single cell including an electrolyte layer containing solid oxide, and a cathode and an anode which face each other in a first direction with the electrolyte layer intervening therebetween; a current collector disposed on a cathode side of the single cell and having a protrusion protruding toward the cathode; an electrically conductive coat covering a surface of the current collector; and an electrically conductive bonding layer bonding the cathode and the protrusion covered with the coat. In all sections of the protrusion taken in parallel with the first direction, a corner portion of the protrusion covered with the coat is covered with the bonding layer.
    Type: Grant
    Filed: March 26, 2016
    Date of Patent: May 26, 2020
    Assignee: MORIMURA SOFC TECHNOLOGY CO., LTD.
    Inventors: Yoshiaki Sato, Makoto Kuribayashi, Tomoki Murata, Takahiro Masumoto, Tomoo Tanaka
  • Publication number: 20200083545
    Abstract: An electrochemical reaction unit includes a unit cell including an electrolyte layer, and a cathode and an anode which face each other in a first direction with the electrolyte layer intervening therebetween, and one or a plurality of structural members. The electrochemical reaction unit further includes a glass seal member which contains glass and is in contact with two members facing each other in the first direction, the two members being selected from the unit cell and the one or the plurality of structural members. The glass seal member contains a plurality of crystal grains each having a ratio of a vertical dimension in the first direction to a horizontal dimension in a second direction orthogonal to the first direction of 1.5 or more.
    Type: Application
    Filed: November 22, 2017
    Publication date: March 12, 2020
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Yoshiaki SATO, Ryoji TANIMURA, Kenta EGUCHI, Makoto KURIBAYASHI
  • Publication number: 20190372144
    Abstract: An electrochemical reaction single cell including an electrolyte layer containing Zr and at least one of Y, Sc, and Ca, an anode disposed on one side of the electrolyte layer, a cathode containing Sr and Co and disposed on the other side of the electrolyte layer, and an intermediate layer disposed between the electrolyte layer and the cathode. In the electrochemical reaction single cell, an SrZrO3 integrated value calculated by a predetermined method is 600 to 10,300. Also disclosed is an electrochemical reaction cell stack including a plurality of electrochemical reaction single cells.
    Type: Application
    Filed: November 15, 2017
    Publication date: December 5, 2019
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Shiro INOUE, Makoto KURIBAYASHI, Tatsuya ONO
  • Patent number: 10361440
    Abstract: An electrochemical reaction unit containing a single cell including an electrolyte layer containing solid oxide, and a cathode and an anode which face each other in a first direction with the electrolyte layer intervening therebetween; a current collector disposed on a cathode side of the single cell and having a protrusion protruding toward the cathode; an electrically conductive coat covering a surface of the current collector; and an electrically conductive bonding layer bonding the cathode and the protrusion covered with the coat. In at least one section of the protrusion taken in parallel with the first direction, the protrusion covered with the coat has a covered portion covered with the bonding layer and an exposed portion exposed from the bonding layer and including a corner portion of the protrusion covered with the coat.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: July 23, 2019
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Yoshiaki Sato, Makoto Kuribayashi, Tomoki Murata, Takahiro Masumoto, Tomoo Tanaka
  • Publication number: 20190051914
    Abstract: A fuel cell electricity generation unit including a unit cell including an electrolyte layer containing a solid oxide, and a cathode and an anode which face each other with the electrolyte layer intervening therebetween; an electrically conductive current collecting member disposed on the cathode side of the unit cell; an electrically conductive coating which covers the surface of the current collecting member; and an electrically conductive bonding layer which bonds the cathode to the current collecting member covered with the coating, wherein the following relationship is satisfied: the porosity of the coating<the porosity of the bonding layer<the porosity of the cathode.
    Type: Application
    Filed: November 10, 2016
    Publication date: February 14, 2019
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventor: Makoto KURIBAYASHI
  • Patent number: 10186715
    Abstract: A metal plate-bonded single fuel cell unit according to one aspect of the present invention includes a single cell element having a solid electrolyte and fuel and air electrodes disposed on opposite sides of the solid electrolyte and a metal plate bonded by a brazing material to the single cell element. The metal plate contains Ti and Al and has an Al—Ti-containing oxide layer present on a surface of the metal plate, an Al oxide film present on a surface of the Al—Ti-containing oxide layer and a Ti-containing phase apart from a part of a surface of the Al oxide film in contact with the brazing material while being present on a remaining part of the surface of the Al oxide film. The metal plate-bonded single fuel cell unit has a Ti reaction phase formed at an interface between the solid electrolyte and the brazing material.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: January 22, 2019
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Yasuo Okuyama, Makoto Kuribayashi, Etsuya Ikeda
  • Patent number: 10164286
    Abstract: A separator-fitted single fuel cell having a single fuel cell, a plate-shaped metallic separator that includes a through hole, and a joint portion that joins the single fuel cell to the metallic separator and is made of a brazing material containing Ag. The joint portion includes a protruding portion that protrudes from a gap between the single fuel cell and the first main surface of the metallic separator toward the through hole. The protruding portion is lower than the second main surface as viewed from the single fuel cell. The single fuel cell includes a sealing portion that is disposed along the entire circumference of the through hole of the metallic separator, covers the protruding portion and a part of the second main surface, and is made of a sealing material containing glass.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: December 25, 2018
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Makoto Kuribayashi, Yasuo Okuyama, Etsuya Ikeda
  • Patent number: 10122023
    Abstract: A fuel cell with separator includes a fuel cell body having a cathode, an anode, and a solid electrolyte layer disposed between the cathode and the anode; a plate-like metal separator having first and second main surfaces and an opening which opens at the first and second main surfaces; a joint formed of an Ag-containing brazing filler metal and adapted to join the fuel cell body and the first main surface of the metal separator; and a seal formed of a glass-containing sealing material and disposed closer to the opening than is the joint, the seal being located between the first main surface and the fuel cell body and extending along the entire perimeter of the opening.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: November 6, 2018
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Makoto Kuribayashi, Etsuya Ikeda, Wataru Matsutani, Yosuke Yatsuya, Masaaki Murase
  • Patent number: 9997797
    Abstract: An electrochemical reaction unit which includes a unit cell including an electrolyte layer, a cathode, and an anode facing each other in a first direction; a current collector disposed on a cathode side of the unit cell; and an electrically conductive porous bonding layer. A bonding region contains a block portion and an electrical conductivity securing portion. The block portion has a pore having a diameter that is 20% or more than the thickness of the bonding region in the first direction. The block portion extends inward from one of opposite ends in a second direction orthogonal to the first direction of the bonding region, and reaches and contains the pore satisfying the pore requirement. The electrical conductivity securing portion is located toward the other end of the bonding region and has a smaller average diameter of pores than the block portion.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: June 12, 2018
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Yoshiaki Sato, Makoto Kuribayashi, Tomoki Murata, Takahiro Masumoto, Tomo-o Tanaka
  • Publication number: 20180123143
    Abstract: An electrochemical reaction unit containing a single cell including an electrolyte layer containing solid oxide, and a cathode and an anode which face each other in a first direction with the electrolyte layer intervening therebetween; a current collector disposed on a cathode side of the single cell and having a protrusion protruding toward the cathode; an electrically conductive coat covering a surface of the current collector; and an electrically conductive bonding layer bonding the cathode and the protrusion covered with the coat. In at least one section of the protrusion taken in parallel with the first direction, the protrusion covered with the coat has a covered portion covered with the bonding layer and an exposed portion exposed from the bonding layer and including a corner portion of the protrusion covered with the coat.
    Type: Application
    Filed: March 23, 2016
    Publication date: May 3, 2018
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Yoshiaki SATO, Makoto KURIBAYASHI, Tomoki MURATA, Takahiro MASUMOTO, Tomoo TANAKA
  • Publication number: 20180076468
    Abstract: An object is to effectively restrain Cr diffusion from a corner portion of a protrusion of a cathode-side current collector. The electrochemical reaction unit includes a single cell including an electrolyte layer containing solid oxide, and a cathode and an anode which face each other in a first direction with the electrolyte layer intervening therebetween; a current collector disposed on a cathode side of the single cell and having a protrusion protruding toward the cathode; an electrically conductive coat covering a surface of the current collector; and an electrically conductive bonding layer bonding the cathode and the protrusion covered with the coat. In all sections of the protrusion taken in parallel with the first direction, a corner portion of the protrusion covered with the coat is covered with the bonding layer.
    Type: Application
    Filed: March 26, 2016
    Publication date: March 15, 2018
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Yoshiaki SATO, Makoto KURIBAYASHI, Tomoki MURATA, Takahiro MASUMOTO, Tomoo TANAKA
  • Patent number: 9728797
    Abstract: A fuel battery and a fuel cell stack, the fuel battery including: a fuel cell that generates electric power through a power generating reaction of reactant gases and includes a solid electrolyte layer having a first main surface and a second main surface, a first electrode disposed on the first main surface and serving as one of a cathode and an anode, and a second electrode disposed on the second main surface and serving as the other one of the cathode and the anode; an interconnector disposed so as to face the first electrode; and a current collecting member that electrically connects the first electrode to the interconnector. The first electrode includes: an inner portion connected to the current collecting member; and an outer portion disposed outward of the current collecting member and having a height larger than the height of the inner portion.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: August 8, 2017
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Makoto Kuribayashi, Hayato Katsuda, Etsuya Ikeda
  • Publication number: 20160372758
    Abstract: An electrochemical reaction unit which includes a unit cell including an electrolyte layer, a cathode, and an anode facing each other in a first direction; a current collector disposed on a cathode side of the unit cell; and an electrically conductive porous bonding layer. A bonding region contains a block portion and an electrical conductivity securing portion. The block portion has a pore having a diameter that is 20% or more than the thickness of the bonding region in the first direction. The block portion extends inward from one of opposite ends in a second direction orthogonal to the first direction of the bonding region, and reaches and contains the pore satisfying the pore requirement. The electrical conductivity securing portion is located toward the other end of the bonding region and has a smaller average diameter of pores than the block portion.
    Type: Application
    Filed: June 16, 2016
    Publication date: December 22, 2016
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Yoshiaki SATO, Makoto KURIBAYASHI, Tomoki MURATA, Takahiro MASUMOTO, Tomo-o TANAKA
  • Publication number: 20160359175
    Abstract: A metal plate-bonded single fuel cell unit according to one aspect of the present invention includes a single cell element having a solid electrolyte and fuel and air electrodes disposed on opposite sides of the solid electrolyte and a metal plate bonded by a brazing material to the single cell element. The metal plate contains Ti and Al and has an Al-Ti-containing oxide layer present on a surface of the metal plate, an Al oxide film present on a surface of the Al-Ti-containing oxide layer and a Ti-containing phase apart from a part of a surface of the Al oxide film in contact with the brazing material while being present on a remaining part of the surface of the Al oxide film. The metal plate-bonded single fuel cell unit has a Ti reaction phase formed at an interface between the solid electrolyte and the brazing material.
    Type: Application
    Filed: December 17, 2014
    Publication date: December 8, 2016
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Yasuo OKUYAMA, Makoto KURIBAYASHI, Etsuya IKEDA
  • Publication number: 20160276680
    Abstract: A separator-fitted single fuel cell having a single fuel cell, a plate-shaped metallic separator that includes a through hole, and a joint portion that joins the single fuel cell to the metallic separator and is made of a brazing material containing Ag. The joint portion includes a protruding portion that protrudes from a gap between the single fuel cell and the first main surface of the metallic separator toward the through hole. The protruding portion is lower than the second main surface as viewed from the single fuel cell. The single fuel cell includes a sealing portion that is disposed along the entire circumference of the through hole of the metallic separator, covers the protruding portion and a part of the second main surface, and is made of a sealing material containing glass.
    Type: Application
    Filed: October 23, 2014
    Publication date: September 22, 2016
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Makoto KURIBAYASHI, Yasuo OKUYAMA, Etsuya IKEDA
  • Publication number: 20160226085
    Abstract: A fuel battery and a fuel cell stack, the fuel battery including: a fuel cell that generates electric power through a power generating reaction of reactant gases and includes a solid electrolyte layer having a first main surface and a second main surface, a first electrode disposed on the first main surface and serving as one of a cathode and an anode, and a second electrode disposed on the second main surface and serving as the other one of the cathode and the anode; an interconnector disposed so as to face the first electrode; and a current collecting member that electrically connects the first electrode to the interconnector. The first electrode includes: an inner portion connected to the current collecting member; and an outer portion disposed outward of the current collecting member and having a height larger than the height of the inner portion.
    Type: Application
    Filed: September 8, 2014
    Publication date: August 4, 2016
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Makoto KURIBAYASHI, Hayato KATSUDA, Etsuya IKEDA
  • Publication number: 20150318563
    Abstract: A fuel cell with separator includes a fuel cell body having a cathode, an anode, and a solid electrolyte layer disposed between the cathode and the anode; a plate-like metal separator having first and second main surfaces and an opening which opens at the first and second main surfaces; a joint formed of an Ag-containing brazing filler metal and adapted to join the fuel cell body and the first main surface of the metal separator; and a seal formed of a glass-containing sealing material and disposed closer to the opening than is the joint, the seal being located between the first main surface and the fuel cell body and extending along the entire perimeter of the opening.
    Type: Application
    Filed: August 26, 2013
    Publication date: November 5, 2015
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Makoto KURIBAYASHI, Etsuya IKEDA, Wataru MATSUTANI, Yosuke YATSUYA, Masaaki MURASE