Patents by Inventor Taizo YOSHINAGA
Taizo YOSHINAGA 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).
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Publication number: 20240024816Abstract: The present disclosure provides an exhaust gas purification catalyst with increased catalytic activity. The exhaust gas purification catalyst comprises a metal oxide support and Rh particles supported on the metal oxide support, wherein the metal oxide support is doped with a cation having a higher oxidation number than the cation of the metal oxide support. The metal oxide support may be a SrTiO3 support doped with greater than 0 mol % and 8 mol % or lower Nb, a ZrO2 support doped with 5 mol % to 20 mol % Nb, or an Al2O3 support doped with greater than 0 mol % and 7 mol % or lower Ti.Type: ApplicationFiled: July 18, 2023Publication date: January 25, 2024Inventors: Toshimasa Hara, Motohisa Kado, Taizo Yoshinaga, Hirohito Hirata, Takahiro Suzuki, Shunsuke Oishi, Kazuyoshi Tsukamoto, Fumiyasu Oba
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Publication number: 20230302435Abstract: A catalyst for purification of exhaust gas in which Pd-based nanoparticles and ceria nanoparticles represented by CeO2-x, (0?x<0.5) are supported on a composite metal oxide support containing alumina, ceria, and zirconia, wherein a molar ratio (Ce/Pd) of Ce and Pd supported on the support is 1 to 8, a proximity ? between Pd and Ce is 0.15 to 0.50, wherein the proximity ? is determined, based on Pd and Ce distribution maps in an element mapping image of energy dispersive X-ray analysis, by the following formula (1) ? = ? j = 0 N - 1 ? ? i = 0 M - 1 ? ( ( I ? ( i , j ) - I ave ) ? ( T ? ( i , j ) - T ave ) ) ? j = 0 N - 1 ? ? i = 0 M - 1 ? ( I ? ( i , j ) - I ave ) 2 - ? j = 0 N - 1 ? ? i = 0 M - 1 ? ( T ? ( i , j ) - T ave ) 2 , ( 1 ) and a Pd dispersity after a heat-resistance test is 0.Type: ApplicationFiled: November 2, 2022Publication date: September 28, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Naoki KUMATANI, Akira MORIKAWA, Masaoki IWASAKI, Miho HATANAKA, Taizo YOSHINAGA, Masahide MIURA, Takahiro HAYASHI
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Patent number: 11643958Abstract: The present disclosure provides an exhaust gas purification material and an exhaust gas purification device that can efficiently remove harmful components even after being exposed to high temperature. Such exhaust gas purification material comprises metal oxide particles and noble metal particles supported on the metal oxide particles. The noble metal particles have a particle size distribution with a mean of 1.5 nm and 18 nm and a standard deviation of less than 1.6 nm.Type: GrantFiled: March 24, 2022Date of Patent: May 9, 2023Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Norimichi Shimano, Taizo Yoshinaga, Shogo Shirakawa, Nobuyuki Takagi, Masahide Miura
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Publication number: 20220307404Abstract: The present disclosure provides an exhaust gas purification material and an exhaust gas purification device that can efficiently remove harmful components even after being exposed to high temperature. Such exhaust gas purification material comprises metal oxide particles and noble metal particles supported on the metal oxide particles. The noble metal particles have a particle size distribution with a mean of 1.5 nm and 18 nm and a standard deviation of less than 1.6 nm.Type: ApplicationFiled: March 24, 2022Publication date: September 29, 2022Inventors: Norimichi SHIMANO, Taizo YOSHINAGA, Shogo SHIRAKAWA, Nobuyuki TAKAGI, Masahide MIURA
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Patent number: 10563623Abstract: An EGR cooler in the disclosure includes: a gas path configured to allow an EGR gas to flow; a refrigerant path configured to perform heat exchange between the EGR gas circulating along the gas path and a refrigerant; an exothermic body containing portion configured such that an exothermic body to generate heat by adsorbing a predetermined working gas is contained within the EGR cooler and at least a part of the exothermic body contacts with a wall surface of the gas path; a working gas tank in which the working gas is stored; and a gas moving apparatus configured to move the working gas stored in the working gas tank, from the working gas tank to the exothermic body containing portion.Type: GrantFiled: October 15, 2018Date of Patent: February 18, 2020Assignee: Toyota Jidosha Kabushiki KaishaInventors: Tomohiro Shinagawa, Takashi Hotta, Takeo Yamaguchi, Yoshio Ohashi, Taizo Yoshinaga, Yuji Miyoshi
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Publication number: 20190186430Abstract: An EGR cooler in the disclosure includes: a gas path configured to allow an EGR gas to flow; a refrigerant path configured to perform heat exchange between the EGR gas circulating along the gas path and a refrigerant; an exothermic body containing portion configured such that an exothermic body to generate heat by adsorbing a predetermined working gas is contained within the EGR cooler and at least a part of the exothermic body contacts with a wall surface of the gas path; a working gas tank in which the working gas is stored; and a gas moving apparatus configured to move the working gas stored in the working gas tank, from the working gas tank to the exothermic body containing portion.Type: ApplicationFiled: October 15, 2018Publication date: June 20, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tomohiro SHINAGAWA, Takashi HOTTA, Takeo YAMAGUCHI, Yoshio OHASHI, Taizo YOSHINAGA, Yuji MIYOSHI
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Publication number: 20170292470Abstract: An internal combustion engine comprising: a combustion chamber surrounded by at least an inner wall of a cylinder bore, a cylinder head, a valve and a piston, and a coating layer arranged on at least part of the inner wall of the combustion chamber, wherein the thermal conductivity of the coating layer is, at room temperature, lower than the thermal conductivities of the cylinder block, the cylinder head, the valve and the piston, the thermal conductivity of the coating layer is reversibly increased along with a rise in the temperature of the coating layer, and wherein the heat capacity per unit area of the coating layer is more than 0 kJ/(m2·K) and 4.2 kJ/(m2·K) or less.Type: ApplicationFiled: February 9, 2017Publication date: October 12, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Taizo YOSHINAGA, Takeo YAMAGUCHI, Hideo YAMASHITA
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Publication number: 20170175232Abstract: A thermal insulation material containing an Al—Cu—Fe-based alloy, wherein at least part of the Al—Cu—Fe-based alloy comprises a quasicrystalline phase, wherein the Al—Cu—Fe-based alloy contains one or more transition elements selected from the group of Ru, Rh, Pd, Ag, Os, Jr, Pt, and Au, and wherein the total of the transition elements is from 0.25 to 0.75 atom % when the whole of the Al—Cu—Fe-based alloy is 100 atom %.Type: ApplicationFiled: December 1, 2016Publication date: June 22, 2017Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota School FoundationInventors: Taizo YOSHINAGA, Ryosuke MAEKAWA, Yohei KINOSHITA, Takeo YAMAGUCHI, Hideo YAMASHITA, Tsunehiro TAKEUCHI
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Publication number: 20160245450Abstract: It should be noted that when hollow nanosilica in an amount not less than a predetermined amount is incorporated into an AlCuFe-based quasicrystalline alloy, a heat conductivity lower than the heat conductivity predictable from the mixing ratio of the AlCuFe-based quasicrystalline alloy and the hollow nanosilica is obtained, a heat insulating material including an AlCuFe-based quasicrystalline alloy having mixed therein 17 mass % or more of hollow nanosilica is produced, wherein the heat insulating property is more enhanced.Type: ApplicationFiled: February 23, 2016Publication date: August 25, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Taizo YOSHINAGA, Ryosuke MAEKAWA