Patents by Inventor Masaru Kakinohana
Masaru Kakinohana 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: 20220412244Abstract: An exhaust gas purification catalyst apparatus has a honeycomb base material and a catalyst noble metal supported by the honeycomb base material, wherein: the honeycomb base material contains ceria-zirconia composite oxide particles as one of the constituent materials, is of a wall flow type, and includes inlet-side cells and outlet-side cells demarcated by porous partition walls; the catalyst noble metal is supported in inlet-side support regions and outlet-side support regions; each of the inlet-side support regions is formed with a specific length from the exhaust gas flow upstream end; the catalyst noble metal 70% support depth is not greater than 50% of the thickness of the porous partition walls; each of the outlet-side support regions is formed with a specific length from the exhaust gas flow downstream end; and the catalyst noble metal 70% support depth is greater than 50% of the thickness of the porous partition walls.Type: ApplicationFiled: June 17, 2020Publication date: December 29, 2022Applicants: CATALER CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kana IWATA, Minoru ITOU, Takeru YOSHIDA, Masaru KAKINOHANA, Hiromasa SUZUKI, Atsushi TANAKA
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Patent number: 11511459Abstract: The present invention provides a method of producing a honeycomb structured body having excellent mechanical strength.Type: GrantFiled: September 11, 2019Date of Patent: November 29, 2022Assignees: IBIDEN CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shinnosuke Goto, Masaru Kakinohana, Takeru Yoshida, Hiromasa Suzuki, Takumi Tojo
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Patent number: 11511458Abstract: The present invention provides a method of producing a honeycomb structured body having excellent mechanical strength.Type: GrantFiled: September 11, 2019Date of Patent: November 29, 2022Assignees: IBIDEN CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shinnosuke Goto, Takeru Yoshida, Hiromasa Suzuki, Masaru Kakinohana, Takumi Tojo
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Patent number: 11498056Abstract: The present disclosure provides a monolith substrate used for an exhaust gas purifying catalyst that improves purification performance, a method for producing such monolith substrate, and an exhaust gas purifying catalyst comprising such monolith substrate. The present disclosure relates to a monolith substrate comprising an alumina-ceria-zirconia composite oxide and alumina, a method for producing such monolith substrate, and an exhaust gas purifying catalyst comprising such monolith substrate.Type: GrantFiled: July 21, 2021Date of Patent: November 15, 2022Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION, IBIDEN CO., LTD.Inventors: Masaru Kakinohana, Tomoaki Sunada, Takeru Yoshida, Suguru Imamura, Shinnosuke Goto, Koichi Uemura
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Publication number: 20220250037Abstract: An exhaust gas purification catalyst device having a substrate and one or more catalytic noble metals supported on the substrate. The substrate has a plurality of cells partitioned by a porous wall 1 and includes ceria-zirconia compound oxide particles. A specific noble metal that is one of the one or more catalytic noble metals satisfies both the following requirements (1) and (2): (1) the noble metal 50% support depth for the specific noble metal is 30% or less of the distance from the surface of the porous wall 1 to the center of the interior of the porous wall 1, and (2) the noble metal 90% support depth for the specific noble metal is 35% or more of the distance from the surface of the porous wall 1 to the center of the interior of the porous wall 1.Type: ApplicationFiled: May 11, 2020Publication date: August 11, 2022Applicants: CATALER CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kana IWATA, Minoru ITOU, Shunsuke OHISHI, Takeru YOSHIDA, Hiromasa SUZUKI, Masaru KAKINOHANA, Satoshi KAMITANI
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Patent number: 11384674Abstract: A reuse evaluation system is a system that performs an evaluation to reuse a catalyst in a state where the catalyst that purifies an exhaust gas of an engine of a vehicle 1 is mounted on the vehicle. The reuse evaluation system includes a deterioration estimator that estimates a degree of deterioration of the catalyst based on an operating state of the vehicle, a reuse setting unit that sets a range of the degree of deterioration of the catalyst as a reuse range of the catalyst according to a usage of reuse of the catalyst, and a reuse determining unit that determines that the catalyst is reusable in the reuse usages when the degree of deterioration of the catalyst estimated by the deterioration estimator is within the reuse range set by the reuse setting unit.Type: GrantFiled: March 19, 2021Date of Patent: July 12, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tsuyoshi Okada, Masaru Kakinohana, Fukutaroh Mori, Shogo Shirakawa, Yuriko Takahashi, Masashi Nose
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Publication number: 20220212171Abstract: An exhaust gas purification catalytic device includes: a substrate; at least one type of noble-metal catalyst that is supported on the substrate; and a coating layer on the surface of the substrate. The substrate includes a plurality of cells which are demarcated by porous walls. The substrate and the coating layer each include ceria-zirconia composite oxide particles.Type: ApplicationFiled: May 11, 2020Publication date: July 7, 2022Applicants: CATALER CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kana IWATA, Minoru ITOU, Shunsuke OHISHI, Takeru YOSHIDA, Masaru KAKINOHANA, Satoshi KAMITANI, Hiromasa SUZUKI
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Patent number: 11286839Abstract: A method for reusing a vehicular catalyst that ensures effective reuse of a catalyst discarded when a vehicle is discarded is provided. A catalyst deterioration level of a catalytic converter is diagnosed, a catalyst that has a value of the deterioration level diagnosed to be smaller than a predetermined value is determined as a reusable catalyst, and the catalytic converter that includes the catalyst determined as the reusable catalyst is removed from a discarded vehicle. The removed catalytic converter is stored in association with a vehicle type and a manufacturing time of the discarded vehicle. When an abnormality occurs in a catalyst of a drivable vehicle corresponding to the vehicle type and the manufacturing time, a catalytic converter that includes the abnormal catalyst is replaced with the stored catalytic converter.Type: GrantFiled: March 2, 2021Date of Patent: March 29, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tsuyoshi Okada, Masaru Kakinohana, Fukutaroh Mori, Shogo Shirakawa, Yuriko Takahashi, Masashi Nose
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Publication number: 20220040676Abstract: The present disclosure provides a monolith substrate used for an exhaust gas purifying catalyst that improves purification performance, a method for producing such monolith substrate, and an exhaust gas purifying catalyst comprising such monolith substrate. The present disclosure relates to a monolith substrate comprising an alumina-ceria-zirconia composite oxide and alumina, a method for producing such monolith substrate, and an exhaust gas purifying catalyst comprising such monolith substrate.Type: ApplicationFiled: July 21, 2021Publication date: February 10, 2022Inventors: Masaru KAKINOHANA, Tomoaki SUNADA, Takeru YOSHIDA, Suguru IMAMURA, Shinnosuke GOTO, Koichi UEMURA
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Publication number: 20220016601Abstract: An exhaust-gas purification apparatus includes: a honeycomb base material including a plurality of exhaust-gas flow paths partitioned by a porous wall; and one or more catalyst noble metals carried by the honeycomb base material. The catalyst noble metals are selected from the group consisting of platinum, palladium, and rhodium. The honeycomb base material has a noble metal concentrated surface section in which a 50%-by-mass noble metal carry depth for a specific noble metal that is one type among one or two catalyst noble metals is less than 50% of the distance from the surface to the center of the inside of the porous wall. The 50%-by-mass noble metal carry depth is the depth at which, when the amount of the specific noble metal carried between the surface and the center of the inside of porous wall is used as a reference, 50% by mass of specific noble metal is carried.Type: ApplicationFiled: November 14, 2019Publication date: January 20, 2022Applicants: CATALER CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shunsuke OHISHI, Takaya OTA, Ryosuke TAKASU, Mitsuyoshi OKADA, Minoru ITOU, Kana IWATA, Takumi TOJO, Takeru YOSHIDA, Masaru KAKINOHANA, Hiromasa SUZUKI
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Patent number: 11187130Abstract: A honeycomb structured body includes a honeycomb fired body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween. The honeycomb fired body contains ceria-zirconia composite oxide particles and inorganic fibers. 60 to 80% of inorganic fibers observed in a cross-sectional image of the honeycomb structured body cut in a cross-sectional direction perpendicular to a longitudinal direction have a ratio of the length of a long axis to the length of a short axis (long axis/short axis) of 1.00 to 1.30. The length of the long axis is the length of a long axis of a cross section of an inorganic fiber shown in the cross-sectional image. The length of the short axis is the length of a perpendicular bisector of the long axis.Type: GrantFiled: January 16, 2020Date of Patent: November 30, 2021Assignees: IBIDEN CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya Yamamoto, Takeru Yoshida, Hiromasa Suzuki, Masaru Kakinohana, Takumi Tojo
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Publication number: 20210301708Abstract: A reuse evaluation system is a system that performs an evaluation to reuse a catalyst in a state where the catalyst that purifies an exhaust gas of an engine of a vehicle 1 is mounted on the vehicle. The reuse evaluation system includes a deterioration estimator that estimates a degree of deterioration of the catalyst based on an operating state of the vehicle, a reuse setting unit that sets a range of the degree of deterioration of the catalyst as a reuse range of the catalyst according to a usage of reuse of the catalyst, and a reuse determining unit that determines that the catalyst is reusable in the reuse usages when the degree of deterioration of the catalyst estimated by the deterioration estimator is within the reuse range set by the reuse setting unit.Type: ApplicationFiled: March 19, 2021Publication date: September 30, 2021Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tsuyoshi OKADA, Masaru KAKINOHANA, Fukutaroh MORI, Shogo SHIRAKAWA, Yuriko TAKAHASHI, Masashi NOSE
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Publication number: 20210285357Abstract: A method for reusing a vehicular catalyst that ensures effective reuse of a catalyst discarded when a vehicle is discarded is provided. A catalyst deterioration level of a catalytic converter is diagnosed, a catalyst that has a value of the deterioration level diagnosed to be smaller than a predetermined value is determined as a reusable catalyst, and the catalytic converter that includes the catalyst determined as the reusable catalyst is removed from a discarded vehicle. The removed catalytic converter is stored in association with a vehicle type and a manufacturing time of the discarded vehicle. When an abnormality occurs in a catalyst of a drivable vehicle corresponding to the vehicle type and the manufacturing time, a catalytic converter that includes the abnormal catalyst is replaced with the stored catalytic converter.Type: ApplicationFiled: March 2, 2021Publication date: September 16, 2021Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tsuyoshi OKADA, Masaru KAKINOHANA, Fukutaroh MORI, Shogo SHIRAKAWA, Yuriko TAKAHASHI, Masashi NOSE
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Patent number: 10989092Abstract: The present invention provides a honeycomb structured body containing a ceria-zirconia composite oxide and being less susceptible to ring-off cracking. The honeycomb structured body of the present invention includes a honeycomb fired body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween, wherein the honeycomb fired body contains ceria-zirconia composite oxide particles and inorganic fibers, and a b-axis thermal expansion coefficient measured in a direction along a b-axis representing a direction perpendicular to a longitudinal direction of the honeycomb structured body is higher than an a-axis thermal expansion coefficient measured in a direction along an a-axis representing the longitudinal direction of the honeycomb structured body.Type: GrantFiled: January 16, 2020Date of Patent: April 27, 2021Assignees: IBIDEN CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya Yamamoto, Takeru Yoshida, Hiromasa Suzuki, Masaru Kakinohana, Takumi Tojo
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Publication number: 20200232367Abstract: The present invention provides a honeycomb structured body containing a ceria-zirconia composite oxide and not easily breakable under stress in an a-axis direction. The honeycomb structured body includes a honeycomb fired body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween, wherein the honeycomb fired body contains ceria-zirconia composite oxide particles and inorganic fibers, and 60 to 80% of inorganic fibers observed in a cross-sectional image of the honeycomb structured body cut in a cross-sectional direction perpendicular to a longitudinal direction have a ratio of the length of a long axis to the length of a short axis (long axis/short axis) of 1.00 to 1.30, the length of the long axis being the length of a long axis of a cross section of an inorganic fiber shown in the cross-sectional image, the length of the short axis being the length of a perpendicular bisector of the long axis.Type: ApplicationFiled: January 16, 2020Publication date: July 23, 2020Applicants: IBIDEN CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya YAMAMOTO, Takeru YOSHIDA, Hiromasa SUZUKI, Masaru KAKINOHANA, Takumi TOJO
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Publication number: 20200232368Abstract: The present invention provides a honeycomb structured body containing a ceria-zirconia composite oxide and being less susceptible to ring-off cracking. The honeycomb structured body of the present invention includes a honeycomb fired body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween, wherein the honeycomb fired body contains ceria-zirconia composite oxide particles and inorganic fibers, and a b-axis thermal expansion coefficient measured in a direction along a b-axis representing a direction perpendicular to a longitudinal direction of the honeycomb structured body is higher than an a-axis thermal expansion coefficient measured in a direction along an a-axis representing the longitudinal direction of the honeycomb structured body.Type: ApplicationFiled: January 16, 2020Publication date: July 23, 2020Applicants: IBIDEN CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya YAMAMOTO, Takeru YOSHIDA, Hiromasa SUZUKI, Masaru KAKINOHANA, Takumi TOJO
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Patent number: 10603658Abstract: The present invention provides a honeycomb structured body capable of achieving more effective use of a catalyst in partition walls and having excellent exhaust gas conversion performance. The present invention relates to a honeycomb structured body including: a honeycomb fired body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween, wherein the honeycomb fired body contains ceria-zirconia composite oxide particles and alumina particles, the partition wall of the honeycomb fired body contains macropores having a pore size of 2 to 50 ?m, and in an electron microscope image of a cross section of the partition wall, the percentage of the area occupied by pores having a pore size of 5 to 15 ?m is at least 85% of the total area of the macropores.Type: GrantFiled: September 11, 2019Date of Patent: March 31, 2020Assignees: IBIDEN CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Misako Makino, Daisuke Mori, Takeru Yoshida, Hiromasa Suzuki, Masaru Kakinohana, Takumi Tojo
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Publication number: 20200078983Abstract: The present invention provides a method of producing a honeycomb structured body having excellent mechanical strength.Type: ApplicationFiled: September 11, 2019Publication date: March 12, 2020Applicants: IBIDEN CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shinnosuke GOTO, Takeru YOSHIDA, Hiromasa SUZUKI, Masaru KAKINOHANA, Takumi TOJO
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Publication number: 20200078984Abstract: The present invention provides a method of producing a honeycomb structured body having excellent mechanical strength.Type: ApplicationFiled: September 11, 2019Publication date: March 12, 2020Applicants: IBIDEN CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shinnosuke GOTO, Masaru KAKINOHANA, Takeru YOSHIDA, Hiromasa SUZUKI, Takumi TOJO
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Publication number: 20200078779Abstract: The present invention provides a honeycomb structured body capable of achieving more effective use of a catalyst in partition walls and having excellent exhaust gas conversion performance. The present invention relates to a honeycomb structured body including: a honeycomb fired body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween, wherein the honeycomb fired body contains ceria-zirconia composite oxide particles and alumina particles, the partition wall of the honeycomb fired body contains macropores having a pore size of 2 to 50 ?m, and in an electron microscope image of a cross section of the partition wall, the percentage of the area occupied by pores having a pore size of 5 to 15 ?m is at least 85% of the total area of the macropores.Type: ApplicationFiled: September 11, 2019Publication date: March 12, 2020Applicants: IBIDEN CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Misako MAKINO, Daisuke MORI, Takeru YOSHIDA, Hiromasa SUZUKI, Masaru KAKINOHANA, Takumi TOJO