Patents by Inventor Yuichi MIKAMI

Yuichi MIKAMI 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: 20230075042
    Abstract: A liquid pump device sucking and discharging liquid includes: a pump unit 50, rotating to make the liquid flow; a housing H, accommodating the pump unit and defining a passage 14 of the liquid; and a temperature sensor 80 having a tip region 80a protruded in the passage 14 of the liquid to measure a temperature of the liquid flowing on the passage 14.
    Type: Application
    Filed: August 17, 2022
    Publication date: March 9, 2023
    Applicant: MIKUNI CORPORATION
    Inventors: Yuichi MIKAMI, Takeshi OGI, Jun TAKAHASHI
  • Publication number: 20230067326
    Abstract: A fuel cell system including: an electrochemical pump including a first anode, a first cathode, and a first electrolyte membrane including a proton conductive oxide, the electrochemical pump separating hydrogen from a gas containing the hydrogen, and a solid oxide fuel cell that includes a second anode, a second cathode, and a second electrolyte membrane including a solid oxide electrolyte, and that generates electricity by reacting a fuel gas and an oxidant gas with each other.
    Type: Application
    Filed: October 19, 2022
    Publication date: March 2, 2023
    Inventors: YUICHI MIKAMI, TAKEHITO GOTO, TAKESHI TERAYAMA, KOSUKE NUNOO, TOMOHIRO KUROHA
  • Publication number: 20230006235
    Abstract: An electrode material of the present disclosure is an electrode material that includes a compound represented by the chemical formula BaZr1-x-yMxCoyO3-?. M is In or Yb, and the chemical formula satisfies 0<x<1, 0<y<1, 0<(x+y)<1, and 0<?<1. A membrane electrode assembly of the present disclosure includes a first electrode including the electrode material, and an electrolyte membrane provided on a first main surface of the first electrode.
    Type: Application
    Filed: September 2, 2022
    Publication date: January 5, 2023
    Inventors: YUICHI MIKAMI, KOSUKE NUNOO, TAKEHITO GOTO, HIROSHI ASANO, TAKESHI TERAYAMA, TOMOHIRO KUROHA, HIDEAKI MURASE
  • Publication number: 20230006234
    Abstract: A proton conductor of the present disclosure includes a compound represented by the chemical formula BaZr(1-x-y)YbxScyO3-?. The chemical formula satisfies 0<x<0.5, 0 <y<0.5, (x+y)<0.5, and 0<?<0.5.
    Type: Application
    Filed: September 2, 2022
    Publication date: January 5, 2023
    Inventors: KOSUKE NUNOO, YUICHI MIKAMI, HIROSHI ASANO, TOMOHIRO KUROHA, YUJI OKUYAMA
  • Patent number: 11515546
    Abstract: A membrane electrode assembly of an electrochemical device includes a proton conductive solid electrolyte membrane and an electrode including Ni and an electrolyte material which contains as a primary component, at least one of a first compound having a composition represented by BaZr1-x1M1x1O3 (M1 represents at least one element selected from trivalent elements each having an ion radius of more than 0.720 A° to less than 0.880 A°, and 0<x1<1 holds) and a second compound having a composition represented by BaZr1-x2Tmx2O3 (0<x2<0.3 holds).
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: November 29, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kosuke Yamauchi, Takehito Goto, Tomoya Kamata, Yuichi Mikami, Tomohiro Kuroha, Atsuo Okaichi, Yoichiro Tsuji, Yuji Okuyama
  • Patent number: 11346358
    Abstract: Provided are an impeller and a centrifugal pump that can be simplified in structure and reduced in weight and cost, and that can be integrally molded by a mold or the like. In a centrifugal pump including a housing having an inlet, an outlet and an impeller chamber, an impeller is disposed in the impeller chamber and is rotationally driven by a driving shaft. The impeller includes: a shaft part connected to the driving shaft to rotate about an axis line extending toward the inlet; blades protruding radially outward from an outer periphery of the shaft part; and an annular shroud plate continuous with the blades so as to cover a tip side area of the blades in order to be disposed adjacent to an inner wall of the housing on the inlet side.
    Type: Grant
    Filed: March 22, 2020
    Date of Patent: May 31, 2022
    Assignee: MIKUNI CORPORATION
    Inventors: Norio Takehana, Hideaki Kusanagi, Yuichi Mikami, Atsushi Sugawara, Shin Saito
  • Patent number: 11335930
    Abstract: A fuel cell system includes a fuel feeder that supplies fuel, a fuel cell stack that generates power through an electrochemical reaction using air and a hydrogen-containing gas generated from the fuel, a first temperature sensor that senses the temperature of the fuel cell stack, and a controller. The fuel cell stack has a membrane electrode assembly including an electrolyte membrane through which protons can pass, a cathode on one side of the electrolyte membrane, and an anode on the other side of the electrolyte membrane. The controller defines an upper limit of current output from the fuel cell stack on the basis of the temperature of the fuel cell stack, the supply of the fuel, and the hydrogen consumption of the fuel cell stack associated with internal leakage current and keeps the current output from the fuel cell stack at or below the upper limit.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: May 17, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yukimune Kani, Yuichi Mikami, Takeshi Terayama
  • Patent number: 11329303
    Abstract: A fuel cell system includes: a fuel cell stack including a plurality of cells, each of which has a fuel electrode, an air electrode, and an electrolyte, and performs a power generation by a reaction between a fuel gas and air; a fuel supplier supplying the fuel gas to the fuel electrode; an air supplier supplying the air to the air electrode; a voltage detector detecting the voltage of the fuel cell stack; and a controller stopping the supplying of the fuel gas by the fuel supplier and the supplying of the air by the air supplier when the voltage of the fuel cell stack detected by the voltage detector is decreased to be lower than a threshold voltage after the power generation of the fuel cell stack is stopped.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: May 10, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Shigenori Onuma, Takashi Kakuwa, Yuichi Mikami, Tomohiro Kuroha
  • Publication number: 20220056597
    Abstract: The electrochemical apparatus of the present disclosure includes a first stack that includes an oxide ion conductor as an electrolyte and decomposes water vapor to generate hydrogen and oxygen, a second stack that includes a proton conductor as an electrolyte and separates the hydrogen generated in the first stack from a gas mixture of the hydrogen and the water vapor that has not been decomposed in the first stack, and a heat insulation material that covers the first stack and the second stack.
    Type: Application
    Filed: November 2, 2021
    Publication date: February 24, 2022
    Inventors: YUICHI MIKAMI, TOMOHIRO KUROHA, TAKASHI KAKUWA, TAKESHI TERAYAMA, SHIGENORI ONUMA, KOSUKE NUNOO, TAKEHITO GOTO, KYOHEI KAWADA
  • Publication number: 20220045348
    Abstract: An electrochemical cell of the present disclosure includes a first cell and a second cell. The first cell includes a first electrolyte layer containing an oxide ion conductor. The second cell includes a second electrolyte layer containing a proton conductor, and the second cell is disposed to face the first cell.
    Type: Application
    Filed: October 20, 2021
    Publication date: February 10, 2022
    Inventors: TAKEHITO GOTO, TOMOHIRO KUROHA, TAKASHI KAKUWA, TAKESHI TERAYAMA, SHIGENORI ONUMA, YUICHI MIKAMI, KOSUKE NUNOO, KYOHEI KAWADA
  • Publication number: 20220029195
    Abstract: An electrochemical cell includes a first electrolyte layer containing an oxide-ion conductor, a second electrolyte layer containing a proton conductor, a first electrode which is disposed between the first electrolyte layer and the second electrolyte layer and in contact with a first principal surface of the first electrolyte layer and a first principal surface of the second electrolyte layer and into which a gas flows, a second electrode which is provided on a second principal surface of the first electrolyte layer and which generates oxygen, and a third electrode which is provided on a second principal surface of the second electrolyte layer and which generates hydrogen.
    Type: Application
    Filed: October 5, 2021
    Publication date: January 27, 2022
    Inventors: KOSUKE NUNOO, TAKEHITO GOTO, YUICHI MIKAMI, TAKESHI TERAYAMA, SHIGENORI ONUMA, TAKASHI KAKUWA, KYOHEI KAWADA, TOMOHIRO KUROHA
  • Publication number: 20210408569
    Abstract: A membrane electrode assembly according to the present disclosure includes an electrolyte membrane containing a proton conductive oxide and an electrode containing a lanthanum strontium cobalt iron composite oxide located on the electrolyte membrane, wherein, in the electrode, the ratio of the number of moles of cobalt to the sum of the number of moles of cobalt and the number of moles of iron is 0.35 or more and 0.6 or less.
    Type: Application
    Filed: September 14, 2021
    Publication date: December 30, 2021
    Inventors: YUICHI MIKAMI, TAKEHITO GOTO, SHIGENORI ONUMA, HIDEAKI MURASE, TOMOHIRO KUROHA
  • Publication number: 20210320314
    Abstract: A membrane electrode assembly according to the present disclosure is a membrane electrode assembly including: a solid electrolyte membrane containing an electrolyte material; and an electrode in contact with a reactant gas, wherein the electrode includes a structural support including a ceramic member, and a pore extending from a boundary surface in contact with the reactant gas toward the solid electrolyte membrane in the structural support and filled with a filler having at least one selected from the group consisting of hydrogen oxidation activity, oxygen reduction activity, proton reduction activity, steam decomposition activity, and oxide ion oxidation activity.
    Type: Application
    Filed: June 23, 2021
    Publication date: October 14, 2021
    Inventors: KOSUKE NUNOO, TAKEHITO GOTO, YUICHI MIKAMI, TAKESHI TERAYAMA, TOMOHIRO KUROHA
  • Patent number: 11127963
    Abstract: A SOFC system includes: a fuel cell stack; a reformer; an air supplier: a combustor; and a controller. In a stop control of the above system, the controller calculates an average of ratios of the air to the raw material supplied to the reformer as a first average, in a case in which a molar fraction of a hydrogen component in the anode off-gas is higher than a molar fraction of a raw material component in the anode off-gas, and calculates the average of the ratios of the air to the raw material supplied to the reformer as a second average, in a case in which the molar fraction of the hydrogen component in the anode off-gas is lower than the molar fraction of the raw material component in the anode off-gas. The controller controls the air supplier so that the first average is higher than the second average.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: September 21, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takashi Kakuwa, Shigenori Onuma, Yuichi Mikami
  • Publication number: 20210005899
    Abstract: A membrane electrode assembly of an electrochemical device includes a proton conductive solid electrolyte membrane and an electrode including Ni and an electrolyte material which contains as a primary component, at least one of a first compound having a composition represented by BaZr1-x1M1x1O3 (M1 represents at least one element selected from trivalent elements each having an ion radius of more than 0.720 A° to less than 0.880 A°, and 0<x1<1 holds) and a second compound having a composition represented by BaZr1-x2Tmx2O3 (0<x2<0.3 holds).
    Type: Application
    Filed: September 22, 2020
    Publication date: January 7, 2021
    Inventors: Kosuke YAMAUCHI, Takehito GOTO, Tomoya KAMATA, Yuichi MIKAMI, Tomohiro KUROHA, Atsuo OKAICHI, Yoichiro TSUJI, Yuji OKUYAMA
  • Publication number: 20200378405
    Abstract: Provided are an impeller and a centrifugal pump that can be simplified in structure and reduced in weight and cost, and that can be integrally molded by a mold or the like. In a centrifugal pump including a housing having an inlet, an outlet and an impeller chamber, an impeller is disposed in the impeller chamber and is rotationally driven by a driving shaft. The impeller includes: a shaft part connected to the driving shaft to rotate about an axis line extending toward the inlet; blades protruding radially outward from an outer periphery of the shaft part; and an annular shroud plate continuous with the blades so as to cover a tip side area of the blades in order to be disposed adjacent to an inner wall of the housing on the inlet side.
    Type: Application
    Filed: March 22, 2020
    Publication date: December 3, 2020
    Applicant: MIKUNI CORPORATION
    Inventors: Norio TAKEHANA, Hideaki KUSANAGI, Yuichi MIKAMI, Atsushi SUGAWARA, Shin SAITO
  • Patent number: 10826075
    Abstract: A membrane electrode assembly of an electrochemical device includes a proton conductive solid electrolyte membrane and an electrode including Ni and an electrolyte material which contains as a primary component, at least one of a first compound having a composition represented by BaZr1-x1M1x1O3 (M1 represents at least one element selected from trivalent elements each having an ion radius of more than 0.720 A° to less than 0.880 A°, and 0<x1<1 holds) and a second compound having a composition represented by BaZr1-x2Tmx2O3 (0<x2<0.3 holds).
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: November 3, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kosuke Yamauchi, Takehito Goto, Tomoya Kamata, Yuichi Mikami, Tomohiro Kuroha, Atsuo Okaichi, Yoichiro Tsuji, Yuji Okuyama
  • Patent number: 10763531
    Abstract: A proton conductor of the present disclosure has a composition formula of BaaZr1-x-yYbxNiyO3-? (0.95?a?1.05, 0.1?x?0.4, and 0.15?y?0.30).
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: September 1, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kosuke Yamauchi, Yuichi Mikami, Tomohiro Kuroha, Yuji Okuyama
  • Publication number: 20200028192
    Abstract: A fuel cell system includes: a fuel cell stack including a plurality of cells, each of which has a fuel electrode, an air electrode, and an electrolyte, and performs a power generation by a reaction between a fuel gas and air; a fuel supplier supplying the fuel gas to the fuel electrode; an air supplier supplying the air to the air electrode; a voltage detector detecting the voltage of the fuel cell stack; and a controller stopping the supplying of the fuel gas by the fuel supplier and the supplying of the air by the air supplier when the voltage of the fuel cell stack detected by the voltage detector is decreased to be lower than a threshold voltage after the power generation of the fuel cell stack is stopped.
    Type: Application
    Filed: June 25, 2019
    Publication date: January 23, 2020
    Inventors: SHIGENORI ONUMA, TAKASHI KAKUWA, YUICHI MIKAMI, TOMOHIRO KUROHA
  • Publication number: 20190363377
    Abstract: A fuel cell system includes a fuel feeder that supplies fuel, a fuel cell stack that generates power through an electrochemical reaction using air and a hydrogen-containing gas generated from the fuel, a first temperature sensor that senses the temperature of the fuel cell stack, and a controller. The fuel cell stack has a membrane electrode assembly including an electrolyte membrane through which protons can pass, a cathode on one side of the electrolyte membrane, and an anode on the other side of the electrolyte membrane. The controller defines an upper limit of current output from the fuel cell stack on the basis of the temperature of the fuel cell stack, the supply of the fuel, and the hydrogen consumption of the fuel cell stack associated with internal leakage current and keeps the current output from the fuel cell stack at or below the upper limit.
    Type: Application
    Filed: April 15, 2019
    Publication date: November 28, 2019
    Inventors: YUKIMUNE KANI, YUICHI MIKAMI, TAKESHI TERAYAMA