Patents by Inventor Yu SAKURADA
Yu SAKURADA 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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Patent number: 11266982Abstract: A substrate (11) of an exhaust gas purification catalyst (10) includes inflow-side cells (21), outflow-side cells (22), and porous partition walls (23), each porous partition wall separating the cells (21, 22) from each other. A first catalyst portions (14) is provided at least on a portion of a side of the partition wall (23) that faces the inflow-side cell (21), the portion being located on an upstream side in an exhaust gas flow direction, and a second catalyst portion (15) is provided at least on a portion of a side of the partition wall that faces the outflow-side cell, the portion being located on a downstream side in the exhaust gas flow direction.Type: GrantFiled: March 19, 2019Date of Patent: March 8, 2022Assignee: Mitsui Mining & Smelting Co., Ltd.Inventors: Hiroki Kurihara, Yu Sakurada, Yusuke Nagai, Yoshinori Endo, Takeshi Nabemoto, Shingo Akita
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Patent number: 11179701Abstract: An exhaust gas purifying catalyst having first carrier particles, second carrier particles, and precious metal catalyst particles supported on the first and second carrier particles, wherein: the first carrier particles contain ceria, zirconia, and a rare-earth oxide other than ceria; the second carrier particles contain a rare-earth oxide other than ceria, and may contain ceria and zirconia; the contained proportion of ceria and zirconia in the first carrier particles is higher than the contained proportion of ceria and zirconia in the second carrier particles; the contained proportion of the rare-earth oxide in the second carrier particles is higher than the contained proportion of the rare-earth oxide in the first carrier particles; and the contained proportion of ceria in the first carrier particles is 45 wt % or less, while the precious metal catalyst particles include rhodium particles.Type: GrantFiled: March 9, 2017Date of Patent: November 23, 2021Assignee: CATALER CORPORATIONInventors: Yu Sakurada, Takahiro Harada, Ryota Nakashima
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Patent number: 11097260Abstract: A substrate (11) includes an inflow-side cell (21), an outflow-side cell (22), and a porous, gas-permeable partition wall (23) that separates the inflow-side cell (21) and the outflow-side cell (22) from each other, and also includes a first catalyst portion (14) that is provided on a side of the partition wall (23) that faces the inflow-side cell (21) at least at a portion in upstream side in an exhaust gas flow direction, and a second catalyst portion (15) that is provided on a side of the partition wall that faces the outflow-side cell at least at a portion in downstream side.Type: GrantFiled: March 19, 2019Date of Patent: August 24, 2021Assignee: Mitsui Mining & Smelting Co., Ltd.Inventors: Hiroki Kurihara, Yu Sakurada, Yusuke Nagai, Yoshinori Endo, Takeshi Nabemoto, Shingo Akita
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Publication number: 20210039080Abstract: A substrate (11) of an exhaust gas purification catalyst (10) includes inflow-side cells (21), outflow-side cells (22), and porous partition walls (23), each porous partition wall separating the cells (21, 22) from each other. A first catalyst portions (14) is provided at least on a portion of a side of the partition wall (23) that faces the inflow-side cell (21), the portion being located on an upstream side in an exhaust gas flow direction, and a second catalyst portion (15) is provided at least on a portion of a side of the partition wall that faces the outflow-side cell, the portion being located on a downstream side in the exhaust gas flow direction.Type: ApplicationFiled: March 19, 2019Publication date: February 11, 2021Applicant: Mitsui Mining & Smelting Co., Ltd.Inventors: Hiroki KURIHARA, Yu SAKURADA, Yusuke NAGAI, Yoshinori ENDO, Takeshi NABEMOTO, Shingo AKITA
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Publication number: 20210001315Abstract: A substrate (11) includes an inflow-side cell (21), an outflow-side cell (22), and a porous, gas-permeable partition wall (23) that separates the inflow-side cell (21) and the outflow-side cell (22) from each other, and also includes a first catalyst portion (14) that is provided on a side of the partition wall (23) that faces the inflow-side cell (21) at least at a portion in upstream side in an exhaust gas flow direction, and a second catalyst portion (15) that is provided on a side of the partition wall that faces the outflow-side cell at least at a portion in downstream side.Type: ApplicationFiled: March 19, 2019Publication date: January 7, 2021Inventors: Hiroki KURIHARA, Yu SAKURADA, Yusuke NAGAI, Yoshinori ENDO, Takeshi NABEMOTO, Shingo AKITA
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Patent number: 10828602Abstract: A novel exhaust gas purifying catalyst, method for producing same, and an exhaust gas purification device using same, which are capable of maintaining catalytic activity of a precious metal at a higher level than compared with conventional exhaust gas purifying catalysts. An exhaust gas purifying catalyst having a first carrier particle, a second carrier particle, and a precious metal catalyst particle carried on the first and second carrier particles, wherein: the first carrier particle contains a rare-earth oxide other than ceria and at least one metal oxide selected from the group consisting of silica, alumina, ceria, zirconia, and titania; the second carrier particle contains a rare-earth oxide other than ceria; and the contained amount of the rare-earth oxide in the second carrier particle is higher than the contained amount of the rare-earth oxide in the first carrier particle.Type: GrantFiled: October 24, 2016Date of Patent: November 10, 2020Assignee: CATALER CORPORATIONInventors: Yu Sakurada, Satoshi Matsueda, Sho Hoshino, Ryota Nakashima
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Patent number: 10710023Abstract: An exhaust gas purification catalyst, characterized by having a catalyst layer containing palladium, rhodium, and alumina, which supports a sulfate of an alkaline-earth metal selected from barium sulfate and strontium sulfate, and the correlation coefficients ?Pd,AE and ?Rh,AE calculated from the characteristic X-ray intensity measured using an electron beam micro-analyzer for the palladium, rhodium, and alkaline-earth metal being +0.75 to +1.00 and 0.00 to +0.25, respectively, using 350 points as measurement points obtained by equally dividing the catalyst layer into 351 parts in the thickness direction on a virtual straight line that runs through the catalyst layer in the thickness direction.Type: GrantFiled: February 23, 2017Date of Patent: July 14, 2020Assignee: CATALER CORPORATIONInventors: Koki Yanagawa, Satoshi Matsueda, Yu Sakurada, Chihiro Kasuya
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Publication number: 20190099715Abstract: An exhaust gas purifying catalyst having first carrier particles, second carrier particles, and precious metal catalyst particles supported on the first and second carrier particles, wherein: the first carrier particles contain ceria, zirconia, and a rare-earth oxide other than ceria; the second carrier particles contain a rare-earth oxide other than ceria, and may contain ceria and zirconia; the contained proportion of ceria and zirconia in the first carrier particles is higher than the contained proportion of ceria and zirconia in the second carrier particles; the contained proportion of the rare-earth oxide in the second carrier particles is higher than the contained proportion of the rare-earth oxide in the first carrier particles; and the contained proportion of ceria in the first carrier particles is 45 wt % or less, while the precious metal catalyst particles include rhodium particles.Type: ApplicationFiled: March 9, 2017Publication date: April 4, 2019Applicant: CATALER CORPORATIONInventors: Yu SAKURADA, Takahiro HARADA, Ryota NAKASHIMA
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Publication number: 20190083931Abstract: An exhaust gas purification catalyst, characterized by having a catalyst layer containing palladium, rhodium, and alumina, which supports a sulfate of an alkaline-earth metal selected from barium sulfate and strontium sulfate, and the correlation coefficients ?Pd,AE and ?Rh,AE calculated from the characteristic X-ray intensity measured using an electron beam micro-analyzer for the palladium, rhodium, and alkaline-earth metal being +0.75 to +1.00 and 0.00 to +0.25, respectively, using 350 points as measurement points obtained by equally dividing the catalyst layer into 351 parts in the thickness direction on a virtual straight line that runs through the catalyst layer in the thickness direction.Type: ApplicationFiled: February 23, 2017Publication date: March 21, 2019Applicant: CATALER CORPORATIONInventors: Koki YANAGAWA, Satoshi MATSUEDA, Yu SAKURADA, Chihiro KASUYA
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Publication number: 20180311616Abstract: A novel exhaust gas purifying catalyst, method for producing same, and an exhaust gas purification device using same, which are capable of maintaining catalytic activity of a precious metal at a higher level than compared with conventional exhaust gas purifying catalysts. An exhaust gas purifying catalyst having a first carrier particle, a second carrier particle, and a precious metal catalyst particle carried on the first and second carrier particles, wherein: the first carrier particle contains a rare-earth oxide other than ceria and at least one metal oxide selected from the group consisting of silica, alumina, ceria, zirconia, and titania; the second carrier particle contains a rare-earth oxide other than ceria; and the contained amount of the rare-earth oxide in the second carrier particle is higher than the contained amount of the rare-earth oxide in the first carrier particle.Type: ApplicationFiled: October 24, 2016Publication date: November 1, 2018Applicant: CATALER CORPORATIONInventors: Yu SAKURADA, Satoshi MATSUEDA, Sho HOSHINO, Ryota NAKASHIMA
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Publication number: 20160013496Abstract: A substrate film for use in a catalyst transfer film is provided. The substrate film is used in a catalyst transfer film that has the substrate film and a catalyst layer formed of a catalyst ink on one surface of the substrate film, the catalyst transfer film transferring the catalyst layer to a solid polymer electrolyte membrane. The substrate film for use in a catalyst transfer film is provided with a marginal edge layer formed of a surface treatment material having no affinity for the catalyst ink, in an area of a marginal edge of a target area that is set in advance for forming a target pattern of the catalyst layer.Type: ApplicationFiled: September 21, 2015Publication date: January 14, 2016Applicant: TOPPAN PRINTING CO., LTD.Inventor: Yu SAKURADA