Patents by Inventor Yasushi Takayama

Yasushi Takayama 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: 10914382
    Abstract: A shaft sealing structure for a rotation shaft, includes a sealing ring having ends formed by removal of its part. The ends abutting each other are continuous in the circumferential direction when the sealing ring is reduced in diameter to a radially inner side. The sealing ring is provided along the circumferential direction of the rotation shaft so as to be contactable with an outer peripheral surface of the rotation shaft. The structure also includes a pressing member configured to be movable between a pressing position and a retracted position; an elastic member configured to bias the pressing member toward the pressing position by elastic force; and a support member configured to support the pressing member at the retracted position against the elastic force, and to allow the pressing member to move to the pressing position at a predetermined temperature.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: February 9, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Naotaka Komatsu, Takumi Hori, Yuichi Otani, Hidetaka Kafuku, Hiromu Okamoto, Shunsuke Tanaka, Yasushi Takayama, Tomoki Hanada
  • Patent number: 10870077
    Abstract: Provided is a porous honeycomb filter comprising a porous first cell wall that permits exhaust gas to permeate, a second cell wall that permits exhaust gas to permeate than the first cell wall, and a cell that is surrounded by the first cell wall and the second cell wall to form an extending gas flow passage. The second cell wall has a smaller porosity than the first cell wall.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: December 22, 2020
    Assignee: DENSO CORPORATION
    Inventors: Yasushi Takayama, Shusaku Yamamura
  • Publication number: 20200323040
    Abstract: An electrical resistor includes borosilicate particles, Si-containing particles, and pore parts. The pore parts are constituted by gaps between the borosilicate particles and the Si-containing particles and surround the borosilicate particles and the Si-containing particles. A honeycomb structure includes the electrical resistor. An electric heating catalytic device has the honeycomb structure.
    Type: Application
    Filed: June 18, 2020
    Publication date: October 8, 2020
    Inventors: Takehiro TOKUNO, Kazuki HIRATA, Yasushi TAKAYAMA
  • Publication number: 20200256235
    Abstract: The exhaust gas purification device of the present embodiment is provided in an exhaust gas flow path of an internal combustion engine. The exhaust gas purification device includes a honeycomb catalyst and a PM trapping filter. The honeycomb catalyst is formed by supporting a catalyst on a first substrate which is made of a promoter and has a honeycomb structure. The PM trapping filter is located on the exhaust gas downstream side of the honeycomb catalyst and includes a second substrate having a honeycomb structure, configured to be capable of trapping PM.
    Type: Application
    Filed: May 1, 2020
    Publication date: August 13, 2020
    Inventors: Yoichi KADOTA, Yasushi TAKAYAMA
  • Publication number: 20200222891
    Abstract: An electrically heated catalyst includes a honeycomb substrate, an electrode, and a joining section. The honeycomb substrate and the joining section include matrices and conductive fillers. The matrices contain borosilicate including at least one of an alkali metal and an alkaline earth metal. The joining section preferably has a softening point lower than that of the honeycomb substrate.
    Type: Application
    Filed: March 27, 2020
    Publication date: July 16, 2020
    Inventors: Junichi NARUSE, Takehiro TOKUNO, Kazuki HIRATA, Yasushi TAKAYAMA
  • Publication number: 20200154524
    Abstract: An electrical resistor comprises a matrix composed of borosilicate containing at least one kind of alkali group atoms selected from the group consisting of Na, Mg, K, Ca, Li, Be, Rb, Sr, Cs, Ba, Fr, and Ra. The electrical resistor preferably has an electroconductive filler. A honeycomb structure comprises the electrical resistor. An electrically heated catalyst device comprises the honeycomb structure. The electrical resistor preferably has an electrical resistivity in a range from 0.0001 to 1 ?·m and an electrical resistance increase rate in a range from 0.01×10?6 to 5.0×10?4/K in a temperature range from 25° C. to 500° C.
    Type: Application
    Filed: December 27, 2019
    Publication date: May 14, 2020
    Inventors: Takehiro TOKUNO, Junichi NARUSE, Kazuki HIRATA, Mika KAWAKITA, Yasushi TAKAYAMA
  • Patent number: 10507457
    Abstract: The present invention relates to a honeycomb structure having promoter particles and a binder phase interposed between the promoter particles, and a method for manufacturing the same. The promoter particles contain at least first promoter particles made of a ceria-zirconia solid solution. The binder phase, in each of which a number of inorganic binder particles are aggregated with each other, with ?-alumina being a main component, contain one or two of Fe and Cr dissolved in ?-alumina. The honeycomb structure has a specific surface area at a ratio of 90% or more of after heating to before heating at a temperature of 1200° C.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: December 17, 2019
    Assignee: DENSO CORPORATION
    Inventors: Youichi Kadota, Yasushi Takayama
  • Publication number: 20190314752
    Abstract: Provided is a porous honeycomb filter comprising a porous first cell wall that permits exhaust gas to permeate, a second cell wall that permits exhaust gas to permeate than the first cell wall, and a cell that is surrounded by the first cell wall and the second cell wall to form an extending gas flow passage. The second cell wall has a smaller porosity than the first cell wall.
    Type: Application
    Filed: June 26, 2019
    Publication date: October 17, 2019
    Inventors: Yasushi TAKAYAMA, Shusaku YAMAMURA
  • Publication number: 20190301607
    Abstract: A multistage shaft sealing apparatus includes a first sealing unit, a second sealing unit, and a third sealing unit provided, in a sequential order from a side of the apparatus closer to inside of the apparatus, in a fluid leakage passage formed between the rotating shaft or the rotating member and a housing located to surround the rotating shaft or the rotating member. The first sealing unit includes a first runner and a first sealing ring which form a non-contact-type sealing surface; the second sealing unit includes a second runner and a second sealing ring which form a contact-type sealing surface; the third sealing unit includes a third runner and a third sealing ring which form a contact-type sealing surface, and a purge water supply passage supplying purge water to the third sealing unit and a purge water discharge passage discharging the purge water supplied to the third sealing unit.
    Type: Application
    Filed: February 7, 2019
    Publication date: October 3, 2019
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Takanobu Otani, Hiroshi Kuzumi, Hiroyuki Tokumasu, Toshihiko Matsuo, Yasuhiro Ikeda, Hitoshi Ito, Yasushi Takayama, Tomoki Hanada
  • Patent number: 10311984
    Abstract: The shaft sealing structure includes a seal ring that has abutment portions formed by dividing the seal ring along the axial direction and that is provided around a main shaft in a ring-like manner; a support member that is provided in the seal ring along the circumferential direction of the main shaft; and a thermoswitch that is connected to the support member between the abutment portions and that presses the support member toward the center of the main shaft when the temperature rises to a temperature higher than that during normal operation, in which the seal ring is fixed at a position separated from the main shaft during the normal operation and is moved by the support member toward the center of the main shaft when the temperature rises to a temperature higher than that during the normal operation.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: June 4, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kentarou Saeki, Hidekazu Uehara, Akihiko Umeda, Masaru Sakai, Hiroshi Kuzumi, Yasuhiro Ikeda, Toshihiko Matsuo, Takanobu Otani, Hiroomi Sakuma, Hitoshi Ito, Yasushi Takayama, Tomoki Hanada, Yuji Harada
  • Publication number: 20190091628
    Abstract: Provided is an exhaust gas filter comprising a plurality of cell walls, a plurality of cell holes surrounded by the cell walls, and plug parts each sealing one of both ends of at least a part of the cell holes. The cell walls each have pores that allow adjacent cell holes to communicate with each other. The cell walls contain at least one promoter selected from the group consisting of ceria, zirconia, and a ceria-zirconia solid solution as a constituent thereof.
    Type: Application
    Filed: November 16, 2016
    Publication date: March 28, 2019
    Inventors: Yasushi TAKAYAMA, Yoichi KADOTA
  • Publication number: 20190063610
    Abstract: A shaft sealing structure for a rotation shaft, includes a sealing ring having ends formed by removal of its part. The ends abutting each other are continuous in the circumferential direction when the sealing ring is reduced in diameter to a radially inner side. The sealing ring is provided along the circumferential direction of the rotation shaft so as to be contactable with an outer peripheral surface of the rotation shaft. The structure also includes a pressing member configured to be movable between a pressing position and a retracted position; an elastic member configured to bias the pressing member toward the pressing position by elastic force; and a support member configured to support the pressing member at the retracted position against the elastic force, and to allow the pressing member to move to the pressing position at a predetermined temperature.
    Type: Application
    Filed: August 23, 2018
    Publication date: February 28, 2019
    Inventors: Naotaka KOMATSU, Takumi HORI, Yuichi OTANI, Hidetaka KAFUKU, Hiromu OKAMOTO, Shunsuke TANAKA, Yasushi TAKAYAMA, Tomoki HANADA
  • Publication number: 20180229183
    Abstract: An exhaust gas purifying catalyst provided with a honeycomb structured porous material, a first catalyst consisting of Pd, a coating layer which is formed on a surface of the porous material and a second catalyst consisting of Rh which is loaded onto the coating layer. The porous material contains a catalyst support consisting of a ceria-zirconia solid solution, a composite consisting of alumina and an inorganic binder. A content of the catalyst support in the porous material exceeds 50 parts by mass of a total 100 parts by mass for the catalyst support and the composite. The coating layer is provided with a catalyst support consisting of ceria-zirconia solid solution.
    Type: Application
    Filed: July 29, 2016
    Publication date: August 16, 2018
    Inventors: Yoichi KADOTA, Yasushi TAKAYAMA
  • Publication number: 20180169626
    Abstract: The present invention relates to a honeycomb structure having promoter particles and a binder phase interposed between the promoter particles, and a method for manufacturing the same. The promoter particles contain at least first promoter particles made of a ceria-zirconia solid solution. The binder phase, in each of which a number of inorganic binder particles are aggregated with each other, with ?-alumina being a main component, contain one or two of Fe and Cr dissolved in ?-alumina. The honeycomb structure has a specific surface area at a ratio of 90% or more of after heating to before heating at a temperature of 1200° C.
    Type: Application
    Filed: April 20, 2016
    Publication date: June 21, 2018
    Applicant: Denso Corporation
    Inventors: Youichi KADOTA, Yasushi TAKAYAMA
  • Publication number: 20150221400
    Abstract: The shaft sealing structure includes a seal ring that has abutment portions formed by dividing the seal ring along the axial direction and that is provided around a main shaft in a ring-like manner; a support member that is provided in the seal ring along the circumferential direction of the main shaft; and a thermoswitch that is connected to the support member between the abutment portions and that presses the support member toward the center of the main shaft when the temperature rises to a temperature higher than that during normal operation, in which the seal ring is fixed at a position separated from the main shaft during the normal operation and is moved by the support member toward the center of the main shaft when the temperature rises to a temperature higher than that during the normal operation.
    Type: Application
    Filed: September 27, 2013
    Publication date: August 6, 2015
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kentarou Saeki, Hidekazu Uehara, Akihiko Umeda, Masaru Sakai, Hiroshi Kuzumi, Yasuhiro Ikeda, Toshihiko Matsuo, Takanobu Otani, Hiroomi Sakuma, Hitoshi Ito, Yasushi Takayama, Tomoki Hanada, Yuji Harada
  • Publication number: 20140217608
    Abstract: An improvement in the manufacturing efficiency of a circuit substrate and a semiconductor module where a semiconductor device including electrodes on a front and a back surface is mounted. [Solution] A semiconductor module includes a wiring substrate where a via and a interconnecting pattern are formed, a semiconductor device disposed on a first surface side of the wiring substrate, and a bonding portion including a first bonding layer disposed on the wiring substrate side and a second bonding layer disposed on the semiconductor device side.
    Type: Application
    Filed: September 6, 2012
    Publication date: August 7, 2014
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventor: Yasushi Takayama
  • Publication number: 20140138850
    Abstract: A semiconductor power module (10) includes a ceramic multilayer substrate (100), a bonding layer (110), a diffusion layer (120) and a semiconductor device (130). The bonding layer is placed on a first surface (105) of the ceramic multilayer substrate and is provided as a planar thin film layer including conductive bonding parts (111) configured to electrically connect the semiconductor device with the ceramic multilayer substrate and insulating bonding parts (112) configured to isolate the semiconductor device from the ceramic multilayer substrate. Also disclosed is a production method of the semiconductor power module.
    Type: Application
    Filed: July 31, 2012
    Publication date: May 22, 2014
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventor: Yasushi Takayama