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).

  • Patent number: 11286839
    Abstract: 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: Grant
    Filed: March 2, 2021
    Date of Patent: March 29, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tsuyoshi Okada, Masaru Kakinohana, Fukutaroh Mori, Shogo Shirakawa, Yuriko Takahashi, Masashi Nose
  • Publication number: 20220040676
    Abstract: 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: Application
    Filed: July 21, 2021
    Publication date: February 10, 2022
    Inventors: Masaru KAKINOHANA, Tomoaki SUNADA, Takeru YOSHIDA, Suguru IMAMURA, Shinnosuke GOTO, Koichi UEMURA
  • Publication number: 20220016601
    Abstract: 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: Application
    Filed: November 14, 2019
    Publication date: January 20, 2022
    Applicants: CATALER CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shunsuke OHISHI, Takaya OTA, Ryosuke TAKASU, Mitsuyoshi OKADA, Minoru ITOU, Kana IWATA, Takumi TOJO, Takeru YOSHIDA, Masaru KAKINOHANA, Hiromasa SUZUKI
  • Patent number: 11187130
    Abstract: 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: Grant
    Filed: January 16, 2020
    Date of Patent: November 30, 2021
    Assignees: IBIDEN CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroya Yamamoto, Takeru Yoshida, Hiromasa Suzuki, Masaru Kakinohana, Takumi Tojo
  • Publication number: 20210301708
    Abstract: 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: Application
    Filed: March 19, 2021
    Publication date: September 30, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tsuyoshi OKADA, Masaru KAKINOHANA, Fukutaroh MORI, Shogo SHIRAKAWA, Yuriko TAKAHASHI, Masashi NOSE
  • Publication number: 20210285357
    Abstract: 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: Application
    Filed: March 2, 2021
    Publication date: September 16, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tsuyoshi OKADA, Masaru KAKINOHANA, Fukutaroh MORI, Shogo SHIRAKAWA, Yuriko TAKAHASHI, Masashi NOSE
  • Patent number: 10989092
    Abstract: 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: Grant
    Filed: January 16, 2020
    Date of Patent: April 27, 2021
    Assignees: IBIDEN CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroya Yamamoto, Takeru Yoshida, Hiromasa Suzuki, Masaru Kakinohana, Takumi Tojo
  • Publication number: 20200232367
    Abstract: 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: Application
    Filed: January 16, 2020
    Publication date: July 23, 2020
    Applicants: IBIDEN CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroya YAMAMOTO, Takeru YOSHIDA, Hiromasa SUZUKI, Masaru KAKINOHANA, Takumi TOJO
  • Publication number: 20200232368
    Abstract: 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: Application
    Filed: January 16, 2020
    Publication date: July 23, 2020
    Applicants: IBIDEN CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroya YAMAMOTO, Takeru YOSHIDA, Hiromasa SUZUKI, Masaru KAKINOHANA, Takumi TOJO
  • Patent number: 10603658
    Abstract: 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: Grant
    Filed: September 11, 2019
    Date of Patent: March 31, 2020
    Assignees: IBIDEN CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Misako Makino, Daisuke Mori, Takeru Yoshida, Hiromasa Suzuki, Masaru Kakinohana, Takumi Tojo
  • Publication number: 20200078779
    Abstract: 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: Application
    Filed: September 11, 2019
    Publication date: March 12, 2020
    Applicants: IBIDEN CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Misako MAKINO, Daisuke MORI, Takeru YOSHIDA, Hiromasa SUZUKI, Masaru KAKINOHANA, Takumi TOJO
  • Publication number: 20200078984
    Abstract: The present invention provides a method of producing a honeycomb structured body having excellent mechanical strength.
    Type: Application
    Filed: September 11, 2019
    Publication date: March 12, 2020
    Applicants: IBIDEN CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinnosuke GOTO, Masaru KAKINOHANA, Takeru YOSHIDA, Hiromasa SUZUKI, Takumi TOJO
  • Publication number: 20200078983
    Abstract: The present invention provides a method of producing a honeycomb structured body having excellent mechanical strength.
    Type: Application
    Filed: September 11, 2019
    Publication date: March 12, 2020
    Applicants: IBIDEN CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinnosuke GOTO, Takeru YOSHIDA, Hiromasa SUZUKI, Masaru KAKINOHANA, Takumi TOJO
  • Patent number: 9421495
    Abstract: To provide a catalytic converter that reduces non-uniformity of temperature of a catalyst support and that can approach a uniform temperature distribution, and a structural body for supporting a catalyst that structures this catalytic converter. At a catalyst support, gradually decreasing width portions, at which a width thereof gradually decreases toward electrode centers, are formed at regions where electrodes, are contactingly disposed, as seen in a cross-section orthogonal to a direction in which exhaust flows. The width is shorter than a length of a center line at a given position. Heat generation and heat dissipation of the catalyst support are balanced overall.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: August 23, 2016
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, NGK INSULATORS, LTD.
    Inventors: Keita Hashimoto, Masaru Kakinohana, Takeo Kobayashi, Tsuyoshi Watanabe, Yoshiyuki Kasai, Tadato Ito
  • Publication number: 20140004014
    Abstract: To provide a catalytic converter that reduces non-uniformity of temperature of a catalyst support and that can approach a uniform temperature distribution, and a structural body for supporting a catalyst that structures this catalytic converter. At a catalyst support, gradually decreasing width portions, at which a width thereof gradually decreases toward electrode centers, are formed at regions where electrodes, are contactingly disposed, as seen in a cross-section orthogonal to a direction in which exhaust flows. The width is shorter than a length of a center line at a given position. Heat generation and heat dissipation of the catalyst support are balanced overall.
    Type: Application
    Filed: March 12, 2012
    Publication date: January 2, 2014
    Applicants: NGK INSULATORS, LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keita Hashimoto, Masaru Kakinohana, Takeo Kobayashi, Tsuyoshi Watanabe, Yoshiyuki Kasai, Tadato Ito
  • Publication number: 20130315788
    Abstract: A catalytic converter has a carrier with a cell structure, and a precious metal catalyst carried on the carrier. The carrier includes a first carrier and a second carrier. The second carrier is provided downstream of the first carrier in a gas flow direction of gas that flows into the catalytic converter. The first carrier has a first peripheral region and a first center region that has a lower cell density than the first peripheral region. The second carrier has a second center region and a second peripheral region that has a lower cell density than the second center region.
    Type: Application
    Filed: May 20, 2013
    Publication date: November 28, 2013
    Applicants: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiromasa SUZUKI, Michiharu NAKANO, Masaru KAKINOHANA, Hiroyuki MATSUBARA, Masakazu MURATA, Naohiro HAYASHI
  • Patent number: 8484952
    Abstract: A device for purification of exhaust gas including: an exhaust gas passage 15 connected to an internal combustion engine 10; a particulate matter trapping device 30 which is disposed in the exhaust gas passage 15, and which traps particulate matters in exhaust gas; ozone supply means 40 which is connected to the exhaust gas passage 15 and on an upstream side of the particulate matter trapping device 30, and which can supply ozone to the particulate matter trapping device 30; and an NO oxidizing catalyst 20 which is disposed in the exhaust gas passage 15 and on an upstream of the ozone supply means 40, and which oxidizes NO in the exhaust gas.
    Type: Grant
    Filed: June 6, 2007
    Date of Patent: July 16, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yuji Sakakibara, Yoshihiko Itoh, Koji Yokota, Kouzi Banno, Hirohito Hirata, Masaru Kakinohana, Masaya Ibe
  • Patent number: 8236094
    Abstract: The present invention provides an exhaust gas purifying device including an electrically insulated hollow cylindrical case, a cylindrical outer circumferential electrode arranged on an inner wall of the hollow cylindrical case, a bar-shaped center electrode held on a center axis of the outer circumferential electrode, and a metallic hollow cylindrical body arranged between the outer circumferential electrode and the center electrode, wherein the metallic hollow cylindrical body is electrically insulated and has a plurality of holes to permit particulate matter to pass therethrough without being accumulated.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: August 7, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masaru Kakinohana, Hirohito Hirata, Akira Mizuno
  • Patent number: 8191353
    Abstract: A device for controlling an internal combustion engine comprises a device for trapping particulate matter (PM) in exhaust gas in an exhaust passage, means for supplying ozone to the particulate matter trapping device from the upstream thereof to oxidize and remove PM deposited in the device, and means for interrupting the fuel injection of the internal combustion engine upon the execution of ozone supply by the ozone supply means. It is possible to prevent components consuming ozone, such as NOx, from being contained in the exhaust gas of the internal combustion engine, whereby ozone is effectively usable.
    Type: Grant
    Filed: July 4, 2007
    Date of Patent: June 5, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masaru Kakinohana, Hirohito Hirata, Masaya Ibe
  • Patent number: 8104272
    Abstract: There is provided an exhaust purifying system for an internal combustion engine which can achieve a function of a catalyst without deteriorating a function of ozone at the time of oxidizing and removing PM by using the ozone. The exhaust purifying system for the internal combustion engine comprises a wall-flow type particulate filter (30) for collecting particulate matter in an exhaust gas inside an exhaust passage, wherein the catalyst (38) is supported only in a part of a partition wall (37) of the particulate filter defining a passage (36) on the downstream side of the partition wall (37). In consequence, when ozone is supplied, since the ozone is introduced on the upstream side of the partition wall (37) in which the PM is collected, the ozone does not contact the catalyst supported only in the part of the partition wall defining the passage (36) on the downstream side of the partition wall. Therefore, it is prevented that the ozone is decomposed, and a PM oxidation function is achieved.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: January 31, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hirohito Hirata, Masaru Kakinohana, Masaya Ibe