Patents by Inventor Takeshi Hashizume

Takeshi Hashizume 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: 11568908
    Abstract: A semiconductor device includes a memory array arranged in a matrix, a plurality of word lines provided corresponding to memory cell rows, a word driver for driving one of the plurality of word lines, a plurality of row select lines connected to the word driver, and a row decoder for outputting a row select signal to the plurality of row select lines based on input row address information. According to the embodiment, the semiconductor device can detect a failure of the address decoder in a simple method.
    Type: Grant
    Filed: January 26, 2021
    Date of Patent: January 31, 2023
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Shunya Nagata, Yoshikazu Saito, Takeshi Hashizume
  • Patent number: 11441513
    Abstract: A piston has a top surface composed of porous alumina. Top surface includes a first region and a second region. The first region includes a part or all of a region connecting to an outer periphery of the top surface. The second region is adjacent to the first region. The second region includes some or all of the region inside the top surface. The porous alumina formed on the second region is thinner than that formed on the first region. In a manufacturing method of a piston, first, a casting piston made of aluminum alloy is prepared. Then, a casting surface in a first region is removed, thereby a material surface is exposed. Then, anodization of the casting piston is performed, whereby a porous alumina is formed on the first and second regions.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: September 13, 2022
    Assignee: Toyota Jidosha Kasbushiki Kaisha
    Inventor: Takeshi Hashizume
  • Patent number: 11293393
    Abstract: An internal combustion engine includes a fuel injection nozzle in which a nozzle hole that injects fuel is provided to be exposed to a combustion chamber from a cylinder head of the internal combustion engine, and a hollow duct in which an inlet and an outlet are exposed to the combustion chamber. The duct is provided to penetrate through an inside of the cylinder head so that fuel spray injected from the nozzle hole of the fuel injection nozzle passes from the inlet to the outlet. The duct is preferably configured so that a direction from the inlet to the outlet corresponds to a direction of the fuel spray injected from the nozzle hole.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: April 5, 2022
    Assignee: TOYOTA JDDOSHA KABUSHIKI KAISHA
    Inventor: Takeshi Hashizume
  • Publication number: 20210241808
    Abstract: A semiconductor device includes a memory array arranged in a matrix, a plurality of word lines provided corresponding to memory cell rows, a word driver for driving one of the plurality of word lines, a plurality of row select lines connected to the word driver, and a row decoder for outputting a row select signal to the plurality of row select lines based on input row address information. According to the embodiment, the semiconductor device can detect a failure of the address decoder in a simple method.
    Type: Application
    Filed: January 26, 2021
    Publication date: August 5, 2021
    Inventors: Shunya NAGATA, Yoshikazu SAITO, Takeshi HASHIZUME
  • Publication number: 20210222645
    Abstract: A piston has a top surface composed of porous alumina. Top surface includes a first region and a second region. The first region includes a part or all of a region connecting to an outer periphery of the top surface. The second region is adjacent to the first region. The second region includes some or all of the region inside the top surface. The porous alumina formed on the second region is thinner than that formed on the first region. In a manufacturing method of a piston, first, a casting piston made of aluminum alloy is prepared. Then, a casting surface in a first region is removed, thereby a material surface is exposed. Then, anodization of the casting piston is performed, whereby a porous alumina is formed on the first and second regions.
    Type: Application
    Filed: December 4, 2020
    Publication date: July 22, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takeshi HASHIZUME
  • Patent number: 10808601
    Abstract: An internal combustion engine includes a fuel injection nozzle provided with a nozzle hole for injecting fuel, the nozzle hole exposed from a cylinder head of the internal combustion engine to a combustion chamber, and a hollow duct, an inlet and an outlet of which are exposed to the combustion chamber. The duct is provided in a manner allowing fuel spray injected from the nozzle hole of the fuel injection nozzle to pass through from the inlet to the outlet. The fuel injection nozzle and the duct are configured such that a part of fuel spray that is injected in pilot injection that is performed before main injection directly adheres to an inner wall surface of the duct.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: October 20, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takeshi Hashizume
  • Patent number: 10552261
    Abstract: A selection decoder controls levels of a plurality of selection signals based on an address bit having at least one or more bits. A memory module is selected when its corresponding selection signal is at an activated level, and data can be read and written therein. A failure determination unit determines whether or not the selection decoder is in a failed state based on the levels of the plurality of selection signals.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: February 4, 2020
    Assignee: Renesas Electronics Corporation
    Inventors: Takeshi Hashizume, Naoya Fujita, Shunya Nagata, Yoshisato Yokoyama, Katsumi Shinbo, Kouji Satou
  • Patent number: 10490262
    Abstract: A semiconductor device includes a memory unit having a memory cell driven by a voltage applied from power supply lines VSS and VDD, and a memory unit potential controller for adjusting the potential of the voltage applied to the memory cell. The memory unit potential controller includes a first potential adjustment part provided between the power supply lines VSS and ARVSS, and a second potential adjustment part provided between the power supply lines VDD and ARVSS. Further, the memory unit potential controller adjusts the potential of the power supply line ARVSS based on a first current supplied between the power supply line VSS and a first end portion of the memory cell through the first potential adjustment part, and adjusts a second current supplied between the power supply lines VDD and ARVSS through the second potential adjustment part, in order to rapidly stabilize the potential applied to the memory cell.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: November 26, 2019
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Yoshisato Yokoyama, Takeshi Hashizume, Toshiaki Sano
  • Publication number: 20190277185
    Abstract: An internal combustion engine includes a fuel injection nozzle provided with a nozzle hole for injecting fuel, the nozzle hole exposed from a cylinder head of the internal combustion engine to a combustion chamber, and a hollow duct, an inlet and an outlet of which are exposed to the combustion chamber. The duct is provided in a manner allowing fuel spray injected from the nozzle hole of the fuel injection nozzle to pass through from the inlet to the outlet. The fuel injection nozzle and the duct are configured such that a part of fuel spray that is injected in pilot injection that is performed before main injection directly adheres to an inner wall surface of the duct.
    Type: Application
    Filed: January 7, 2019
    Publication date: September 12, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takeshi HASHIZUME
  • Publication number: 20190195183
    Abstract: An internal combustion engine includes a fuel injection nozzle in which a nozzle hole that injects fuel is provided to be exposed to a combustion chamber from a cylinder head of the internal combustion engine, and a hollow duct in which an inlet and an outlet are exposed to the combustion chamber. The duct is provided to penetrate through an inside of the cylinder head so that fuel spray injected from the nozzle hole of the fuel injection nozzle passes from the inlet to the outlet. The duct is preferably configured so that a direction from the inlet to the outlet corresponds to a direction of the fuel spray injected from the nozzle hole.
    Type: Application
    Filed: October 29, 2018
    Publication date: June 27, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takeshi HASHIZUME
  • Patent number: 10280852
    Abstract: A control apparatus for an internal combustion engine according to the invention is applied to an internal combustion engine in which EGR gas and condensed water generated by an EGR cooler are supplied into a cylinder. The control apparatus calculates an equivalence ratio of the internal combustion engine, and controls an EGR valve and a condensed water supply valve such that, when the equivalence ratio is high, a supply rate of the condensed water increases and a supply rate of the EGR gas decreases relative to when the equivalence ratio is low.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: May 7, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masaaki Katayama, Takeshi Hashizume
  • Publication number: 20190017454
    Abstract: A control apparatus for an internal combustion engine according to the invention is applied to an internal combustion engine in which EGR gas and condensed water generated by an EGR cooler are supplied into a cylinder. The control apparatus calculates an equivalence ratio of the internal combustion engine, and controls an EGR valve and a condensed water supply valve such that, when the equivalence ratio is high, a supply rate of the condensed water increases and a supply rate of the EGR gas decreases relative to when the equivalence ratio is low.
    Type: Application
    Filed: September 14, 2018
    Publication date: January 17, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masaaki KATAYAMA, Takeshi HASHIZUME
  • Publication number: 20180349222
    Abstract: A selection decoder controls levels of a plurality of selection signals based on an address bit having at least one or more bits. A memory module is selected when its corresponding selection signal is at an activated level, and data can be read and written therein. A failure determination unit determines whether or not the selection decoder is in a failed state based on the levels of the plurality of selection signals.
    Type: Application
    Filed: May 21, 2018
    Publication date: December 6, 2018
    Applicant: Renesas Electronics Corporation
    Inventors: Takeshi HASHIZUME, Naoya FUJITA, Shunya NAGATA, Yoshisato YOKOYAMA, Katsumi SHINBO, Kouji SATOU
  • Patent number: 10138829
    Abstract: A control apparatus for an internal combustion engine according to the invention is applied to an internal combustion engine in which EGR gas and condensed water generated by an EGR cooler are supplied into a cylinder. The control apparatus calculates an equivalence ratio of the internal combustion engine, and controls an EGR valve and a condensed water supply valve such that, when the equivalence ratio is high, a supply rate of the condensed water increases and a supply rate of the EGR gas decreases relative to when the equivalence ratio is low.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: November 27, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masaaki Katayama, Takeshi Hashizume
  • Publication number: 20180315470
    Abstract: A semiconductor device includes a memory unit having a memory cell driven by a voltage applied from power supply lines VSS and VDD, and a memory unit potential controller for adjusting the potential of the voltage applied to the memory cell. The memory unit potential controller includes a first potential adjustment part provided between the power supply lines VSS and ARVSS, and a second potential adjustment part provided between the power supply lines VDD and ARVSS. Further, the memory unit potential controller adjusts the potential of the power supply line ARVSS based on a first current supplied between the power supply line VSS and a first end portion of the memory cell through the first potential adjustment part, and adjusts a second current supplied between the power supply lines VDD and ARVSS through the second potential adjustment part, in order to rapidly stabilize the potential applied to the memory cell.
    Type: Application
    Filed: March 7, 2018
    Publication date: November 1, 2018
    Inventors: Yoshisato YOKOYAMA, Takeshi HASHIZUME, Toshiaki SANO
  • Patent number: 10109337
    Abstract: Provided is a memory macro which allows detection of a fault in a fetch circuit for an address signal which is input. The memory micro includes an address input terminal, a clock input terminal, a memory array and a control unit. The control unit includes a temporary memory circuit which fetches an input address signal which is input into the address input terminal in synchronization with an input clock signal which is input from the clock input terminal and outputs the input address signal as an internal address signal. The memory macro further includes an internal address output terminal which outputs the internal address signal for comparison with the input address signal.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: October 23, 2018
    Assignee: Renesas Electronics Corporation
    Inventors: Yoshisato Yokoyama, Yoshikazu Saito, Shunya Nagata, Toshiaki Sano, Takeshi Hashizume
  • Publication number: 20170352399
    Abstract: Provided is a memory macro which allows detection of a fault in a fetch circuit for an address signal which is input. The memory micro includes an address input terminal, a clock input terminal, a memory array and a control unit. The control unit includes a temporary memory circuit which fetches an input address signal which is input into the address input terminal in synchronization with an input clock signal which is input from the clock input terminal and outputs the input address signal as an internal address signal. The memory macro further includes an internal address output terminal which outputs the internal address signal for comparison with the input address signal.
    Type: Application
    Filed: June 5, 2017
    Publication date: December 7, 2017
    Applicant: Renesas Electronics Corporation
    Inventors: Yoshisato YOKOYAMA, Yoshikazu SAITO, Shunya NAGATA, Toshiaki SANO, Takeshi HASHIZUME
  • Patent number: 9790852
    Abstract: A condensed water treatment device for an internal combustion engine is provided. The condensed water treatment device may include a condensed water tank, a condensed water supply device, and a condensed-water generation quantity controlling device. The condensed water treatment device may further include a computer. The computer by executing a computer program may function as a storage-water-quantity decrease controlling device and a storage-water-quantity increase controlling device.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: October 17, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hisaki Ito, Noriyuki Takada, Takeshi Hashizume
  • Patent number: 9784223
    Abstract: The condensed water treatment device increases the EGR quantity (S16, S17) so as to be larger than the EGR quantity (Qe) calculated based on the operating state, when within a specific time period (S13) from a moment when execution of filter regeneration control is started to a moment after predetermined time has elapsed following the end of the execution, and also in a case where (S15) the storage water quantity (Qw) of a condensed water tank storing condensed water generated in an EGR cooler is smaller than a normative water quantity (Qwt).
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: October 10, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Noriyuki Takada, Takeshi Hashizume
  • Patent number: 9695728
    Abstract: The condensed water treatment device obtains (S1) the storage water quantity (QW) of a condensed water tank, and drains (S4) condensed water in the condensed water tank when the storage water quantity (QW) is larger than a threshold value (tu) and also urea water is supplied to an exhaust passage for a selective-reduction type NOx catalyst. Thereby, the condensed water is neutralized and then drained to the outside of an internal combustion engine through the exhaust passage.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: July 4, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Noriyuki Takada, Takeshi Hashizume