Patents by Inventor Akira Kageyama

Akira Kageyama 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: 11977099
    Abstract: A method for manufacturing a semiconductor device in which probes and the layout of the electrode pads of a test element group (TEG) are associated is provided. As a semiconductor device is miniaturized, a scribe area on a wafer also tends to decrease. Accordingly, it is necessary to reduce the size of a TEG arranged in the scribe area, and efficiently arrange an electrode pad for probe contact. Thus, it is necessary to associate the probes and the layout of the electrode pad. According to the method, a layout of a TEG electrode pad corresponding to a plurality of probes arranged in a fan shape or probes manufactured by Micro Electro Mechanical Systems (MEMS) technology is provided.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: May 7, 2024
    Assignee: Hitachi High-Tech Corporation
    Inventors: Tomohisa Ohtaki, Takayuki Mizuno, Ryo Hirano, Toru Fujimura, Shigehiko Kato, Yasuhiko Nara, Katsuo Ohki, Akira Kageyama, Masaaki Komori
  • Patent number: 11959407
    Abstract: A detection device detecting collapse of PM collected in a filter provided in an exhaust system flow path of an internal combustion engine includes: a differential pressure sensor configured to acquire a differential pressure between an exhaust inlet side and an exhaust outlet side of the filter; a water generation determination unit configured to determine whether water is generated in the exhaust system flow path; and a PM collapse determination unit configured to determine that at least a part of the PM collected in the filter has collapsed when a PM accumulation amount estimated based on the acquired differential pressure has increased by a predetermined amount or more within a predetermined period in a state where the PM accumulation amount estimated based on the acquired differential pressure is equal to or larger than a predetermined first threshold and the water generation determination unit has determined that water is generated.
    Type: Grant
    Filed: December 25, 2019
    Date of Patent: April 16, 2024
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Daiki Ishii, Naofumi Ochi, Takanobu Ogawa, Yuta Kageyama, Akira Matsutani, Hitoshi Sato
  • Patent number: 11709199
    Abstract: As a semiconductor device is miniaturized, a scribe area on a wafer also tends to decrease. Accordingly, it is necessary to reduce the size of a TEG arranged in the scribe area, and efficiently arrange an electrode pad for probe contact. Therefore, it is necessary to associate probes and the efficient layout of the electrode pad. The purpose of the present invention is to provide a technique for associating probes and the layout of the electrode pads of a TEG so as to facilitate the evaluation of electrical characteristics. According to an evaluation apparatus for a semiconductor device of the present invention, the above described problems can be solved by providing a plurality of probes arranged in a fan shape or probes manufactured by Micro Electro Mechanical Systems (MEMS) technology.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: July 25, 2023
    Assignee: Hitachi High-Tech Corporation
    Inventors: Tomohisa Ohtaki, Takayuki Mizuno, Ryo Hirano, Toru Fujimura, Shigehiko Kato, Yasuhiko Nara, Katsuo Ohki, Akira Kageyama, Masaaki Komori
  • Patent number: 11391756
    Abstract: As a semiconductor device is miniaturized, a scribe area on a wafer also tends to decrease. Accordingly, it is necessary to reduce the size of a TEG arranged in the scribe area, and efficiently arrange an electrode pad for probe contact. Therefore, it is necessary to associate probes and the efficient layout of the electrode pad. The purpose of the present invention is to provide a technique for associating probes and the layout of an electrode pad of a TEG to facilitate the evaluation of electrical characteristics. According to the present invention, the above described problem can be solved by arranging a plurality of probes in a fan shape or manufacturing the probes with micro electro mechanical systems (MEMS) technology.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: July 19, 2022
    Assignee: Hitachi High-Tech Corporation
    Inventors: Ryo Hirano, Takayuki Mizuno, Tomohisa Ohtaki, Toru Fujimura, Shigehiko Kato, Yasuhiko Nara, Katsuo Ohki, Akira Kageyama, Masaaki Komori
  • Patent number: 11306650
    Abstract: An engine system includes a combustion chamber including a cylinder formed in an engine and a piston configured to reciprocate inside the cylinder, a spark plug disposed in a ceiling part of the combustion chamber, and a water injection device configured to inject water into the combustion chamber through a plurality of nozzle holes facing the inside of the combustion chamber. The piston has a cavity in an upper surface thereof. The water injection device injects water into the cavity in a compression stroke at a timing when an extension of axes of at least some of the nozzle holes intersects the cavity. The cavity has a bottom part where the water injected by the water injection device collides, and a raising part configured to raise the water spreading along the bottom part toward the water injection device.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: April 19, 2022
    Assignee: Mazda Motor Corporation
    Inventors: Takeshi Nagasawa, Xiyao Ge, Akira Kageyama, Hiroyasu Uchida, Ryo Kiyosue
  • Publication number: 20210131375
    Abstract: A structure of a combustion chamber applied to an engine provided with a piston that reciprocates inside a cylinder, and a fuel supply system that supplies fuel to the combustion chamber defined by the cylinder and the piston, mixture gas of fuel from the fuel supply system and air combusting inside the combustion chamber, is provided. The structure includes a first heat insulating layer covering at least a part of a combustion chamber wall surface defining the combustion chamber and made of a material with a lower thermal conductivity than the combustion chamber wall surface, and a second heat insulating layer covering the first heat insulating layer and facing toward the combustion chamber, a thermal diffusivity of the second heat insulating layer being larger than the thermal diffusivity of the first heat insulating layer. The second heat insulating layer has a thickness less than the first heat insulating layer.
    Type: Application
    Filed: October 14, 2020
    Publication date: May 6, 2021
    Inventors: Ryo Kiyosue, Hiroyasu Uchida, Akira Kageyama, Tsugio Fukube, Yoshiyuki Koga, Masatoshi Seto, Yudai Koshiro, Junki Hori
  • Publication number: 20210048450
    Abstract: As a semiconductor device is miniaturized, a scribe area on a wafer also tends to decrease. Accordingly, it is necessary to reduce the size of a TEG arranged in the scribe area, and efficiently arrange an electrode pad for probe contact. Therefore, it is necessary to associate probes and the efficient layout of the electrode pad. The purpose of the present invention is to provide a technique for associating probes and the layout of the electrode pads of a TEG so as to facilitate the evaluation of electrical characteristics. According to a method for manufacturing a semiconductor device of the present invention, the above-described problems can be solved by providing a layout of a TEG electrode pad corresponding to a plurality of probes arranged in a fan shape or probes manufactured by Micro Electro Mechanical Systems (MEMS) technology.
    Type: Application
    Filed: February 6, 2018
    Publication date: February 18, 2021
    Inventors: Tomohisa OHTAKI, Takayuki MIZUNO, Ryo HIRANO, Toru FUJIMURA, Shigehiko KATO, Yasuhiko NARA, Katsuo OHKI, Akira KAGEYAMA, Masaaki KOMORI
  • Publication number: 20210033642
    Abstract: As a semiconductor device is miniaturized, a scribe area on a wafer also tends to decrease. Accordingly, it is necessary to reduce the size of a TEG arranged in the scribe area, and efficiently arrange an electrode pad for probe contact. Therefore, it is necessary to associate probes and the efficient layout of the electrode pad. The purpose of the present invention is to provide a technique for associating probes and the layout of an electrode pad of a TEG to facilitate the evaluation of electrical characteristics. According to the present invention, the above described problem can be solved by arranging a plurality of probes in a fan shape or manufacturing the probes with micro electro mechanical systems (MEMS) technology.
    Type: Application
    Filed: February 6, 2018
    Publication date: February 4, 2021
    Inventors: Ryo HIRANO, Takayuki MIZUNO, Tomohisa OHTAKI, Toru FUJIMURA, Shigehiko KATO, Yasuhiko NARA, Katsuo OHKI, Akira KAGEYAMA, Masaaki KOMORI
  • Publication number: 20210025936
    Abstract: As a semiconductor device is miniaturized, a scribe area on a wafer also tends to decrease. Accordingly, it is necessary to reduce the size of a TEG arranged in the scribe area, and efficiently arrange an electrode pad for probe contact. Therefore, it is necessary to associate probes and the efficient layout of the electrode pad. The purpose of the present invention is to provide a technique for associating probes and the layout of the electrode pads of a TEG so as to facilitate the evaluation of electrical characteristics. According to an evaluation apparatus for a semiconductor device of the present invention, the above described problems can be solved by providing a plurality of probes arranged in a fan shape or probes manufactured by Micro Electro Mechanical Systems (MEMS) technology.
    Type: Application
    Filed: February 6, 2018
    Publication date: January 28, 2021
    Inventors: Tomohisa OHTAKI, Takayuki MIZUNO, Ryo HIRANO, Toru FUJIMURA, Shigehiko KATO, Yasuhiko NARA, Katsuo OHKI, Akira KAGEYAMA, Masaaki KOMORI
  • Publication number: 20210010413
    Abstract: An engine system includes a combustion chamber including a cylinder formed in an engine and a piston configured to reciprocate inside the cylinder, a spark plug disposed in a ceiling part of the combustion chamber, and a water injection device configured to inject water into the combustion chamber through a plurality of nozzle holes facing the inside of the combustion chamber. The piston has a cavity in an upper surface thereof. The water injection device injects water into the cavity in a compression stroke at a timing when an extension of axes of at least some of the nozzle holes intersects the cavity. The cavity has a bottom part where the water injected by the water injection device collides, and a raising part configured to raise the water spreading along the bottom part toward the water injection device.
    Type: Application
    Filed: June 30, 2020
    Publication date: January 14, 2021
    Inventors: Takeshi Nagasawa, Xiyao Ge, Akira Kageyama, Hiroyasu Uchida, Ryo Kiyosue
  • Patent number: 10712384
    Abstract: An object of the present invention relates to detecting a signal caused by a faulty point part of which the identification has been difficult with conventional EBAC. In an embodiment of the present invention, at least one probe is brought into contact with a sample on which a circuit is formed, the sample is scanned with a charged particle beam while power is supplied via the probe to the circuit identified by a contact of the probe, and a change in resistance value of a faulty point heated locally is measured via the probe. According to the present invention, even a signal caused by a high-resistance faulty point or a faulty point embedded in the sample can be easily detected.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: July 14, 2020
    Assignee: HITACHI HIGH-TECH CORPORATION
    Inventors: Akira Kageyama, Yasuhiko Nara
  • Patent number: 10156182
    Abstract: A fuel injection valve is provided for a ceiling portion of a cylinder head. A tip of an ignition electrode is arranged in the vicinity of an injection tip of the fuel injection valve. A recess is provided for the ceiling portion. A center of a cavity is shifted with respect to a bore center of the cylinder. In a vertical cross-section of the inside of a combustion chamber taken along a plane passing through the injection tip of the fuel injection valve and the tip of the ignition electrode, a distance from the injection tip to a wall surface of the cavity at a side at which the ignition electrode is provided is longer than a distance from the injection tip to a wall surface of the cavity at an opposite side.
    Type: Grant
    Filed: December 25, 2015
    Date of Patent: December 18, 2018
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Kazuaki Narahara, Noriyuki Ota, Yoshihisa Nou, Akira Kageyama
  • Patent number: 10100775
    Abstract: A fuel injection valve is caused to inject fuel in a latter half of a compression stroke in such a manner that a fuel concentration immediately before start of combustion is higher in a middle portion of a combustion chamber than in an outer peripheral portion thereof in a low load range where the engine load is lower than a predetermined set reference load. An intake valve driving device is controlled in such a manner that an intake valve closing timing in the low load range is advanced on a retard side with respect to an intake bottom dead center in a case where the engine speed is high, as compared with a case where the engine speed is low, and intake air within a cylinder is blown back toward an intake port at least in a range where the engine speed is low.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: October 16, 2018
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Noriyuki Ota, Yoshihisa Nou, Akira Kageyama
  • Publication number: 20180246166
    Abstract: An object of the present invention relates to detecting a signal caused by a faulty point part of which the identification has been difficult with conventional EBAC. In an embodiment of the present invention, at least one probe is brought into contact with a sample on which a circuit is formed, the sample is scanned with a charged particle beam while power is supplied via the probe to the circuit identified by a contact of the probe, and a change in resistance value of a faulty point heated locally is measured via the probe. According to the present invention, even a signal caused by a high-resistance faulty point or a faulty point embedded in the sample can be easily detected.
    Type: Application
    Filed: July 22, 2016
    Publication date: August 30, 2018
    Inventors: Akira KAGEYAMA, Yasuhiko NARA
  • Publication number: 20180038306
    Abstract: A fuel injection valve is caused to inject fuel in a latter half of a compression stroke in such a manner that a fuel concentration immediately before start of combustion is higher in a middle portion of a combustion chamber than in an outer peripheral portion thereof in a low load range where the engine load is lower than a predetermined set reference load. An intake valve driving device is controlled in such a manner that an intake valve closing timing in the low load range is advanced on a retard side with respect to an intake bottom dead center in a case where the engine speed is high, as compared with a case where the engine speed is low, and intake air within a cylinder is blown back toward an intake port at least in a range where the engine speed is low.
    Type: Application
    Filed: August 2, 2017
    Publication date: February 8, 2018
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Noriyuki OTA, Yoshihisa NOU, Akira KAGEYAMA
  • Publication number: 20170356330
    Abstract: A fuel injection valve is provided for a ceiling portion of a cylinder head. A tip of an ignition electrode is arranged in the vicinity of an injection tip of the fuel injection valve. A recess is provided for the ceiling portion. A center of a cavity is shifted with respect to a bore center of the cylinder. In a vertical cross-section of the inside of a combustion chamber taken along a plane passing through the injection tip of the fuel injection valve and the tip of the ignition electrode, a distance from the injection tip to a wall surface of the cavity at a side at which the ignition electrode is provided is longer than a distance from the injection tip to a wall surface of the cavity at an opposite side.
    Type: Application
    Filed: December 25, 2015
    Publication date: December 14, 2017
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Kazuaki NARAHARA, Noriyuki OTA, Yoshihisa NOU, Akira KAGEYAMA
  • Patent number: 8671670
    Abstract: Provided is an exhaust system of a multi-cylinder engine capable of increasing the air-intake and thereby increasing the engine output with a simple configuration. The exhaust system is provided with low velocity-side passages 54, high velocity-side passages 53, a low velocity-side collection part 56, a high velocity-side collection part 57, and a flow passage area variable valve 58 capable of changing the flow passage area of the respective high velocity-side passages 53.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: March 18, 2014
    Assignee: Mazda Motor Corporation
    Inventors: Naoyuki Yamagata, Akira Kageyama, Takeshi Nagasawa
  • Patent number: 8330756
    Abstract: Grid structured data arranged for a spherical structured grid constituted by combining two component structured grids are visualized by using computer graphics technology. Coordinate conversion means 31 converts grid point coordinates of first and second component structured grids (referred to as N and E systems, respectively), represented by specific regions in spherical coordinates, into local xyz coordinates used in computer graphics. Filter means 32 obtains first and second graphic objects for the N and E systems, respectively. Using E system rotation and N and E system synthesis means 33, the second graphic object for the E system is rotated by 90 degrees with respect to an x axis of a first local xyz coordinate system, and is then rotated by 180 degrees with respect to a z axis of the first local xyz coordinate system, thereby obtaining the rotated second graphic object for the E system, and then, both of the graphic objects are synthesized.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: December 11, 2012
    Assignee: Japan Agency for Marine-Earth Science and Technology
    Inventors: Fumiaki Araki, Akira Kageyama
  • Publication number: 20110239638
    Abstract: Provided is an exhaust system of a multi-cylinder engine capable of increasing the air-intake and thereby increasing the engine output with a simple configuration. The exhaust system is provided with low velocity-side passages 54, high velocity-side passages 53, a low velocity-side collection part 56, a high velocity-side collection part 57, and a flow passage area variable valve 58 capable of changing the flow passage area of the respective high velocity-side passages 53.
    Type: Application
    Filed: March 16, 2011
    Publication date: October 6, 2011
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Naoyuki YAMAGATA, Akira KAGEYAMA, Takeshi NAGASAWA
  • Patent number: 7781896
    Abstract: A semiconductor chip is attached to a lead frame with a filmy organic die-bonding material having a water absorption of 1.5% by volume or less; having a saturation moisture absorption of 1.0% by volume or less, having a residual volatile component in an amount not more than 3.0% by weight, having a modulus of elasticity of 10 MPa or less at a temperature of 250° C. The semiconductor device thus obtained can be free from occurrence of reflow cracks during reflow soldering for the packaging of semiconductor devices.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: August 24, 2010
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Shinji Takeda, Takashi Masuko, Masami Yusa, Tooru Kikuchi, Yasuo Miyadera, Iwao Maekawa, Mitsuo Yamasaki, Akira Kageyama, Aizou Kaneda