Patents by Inventor Takashi Asai

Takashi Asai 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).

  • Publication number: 20230290573
    Abstract: A ceramic electronic device includes a multilayer chip having a plurality of dielectric layers and a plurality of internal electrode layers so as to face each other, each of the plurality of internal electrode layers being stacked via each of the plurality of dielectric layers, an external electrode that is provided on an end face of the multilayer chip, contacts each end of at least a part of the plurality of internal electrode layers, and includes a co-material, the end face being an end of the multilayer chip in a direction in which the plurality of internal electrode layers extend, and a projection portion that is provided between the external electrode and the multilayer chip and has a projection shape toward the external electrode from the multilayer chip. A main component of the projection portion is ceramic including at least Ba, Ca and Ti.
    Type: Application
    Filed: February 16, 2023
    Publication date: September 14, 2023
    Inventors: Keigo NAKAMURA, Michio OSHIMA, Shunya FUKUDA, Jyouji ARIGA, Yoshinori SHIBATA, Takashi ASAI
  • Patent number: 11699553
    Abstract: A ceramic electronic component includes a multilayer chip having a substantially rectangular parallelepiped shape and including a first multilayer structure and a second multilayer structure disposed on each of top and bottom faces of the first multilayer structure, the first multilayer structure including first ceramic dielectric layers having a first width in a first direction in which side faces of the multilayer chip are opposite to each other, the second multilayer structure including second internal electrode layers having a second width less than the first width in the first direction, and a pair of external electrodes formed from the respective two edge faces to at least one of side faces of the multilayer chip, wherein main components of the first and second internal electrode layers differ from a main component of the external electrodes.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: July 11, 2023
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Yuto Yamato, Takashi Asai, Takayuki Hattori
  • Publication number: 20230005669
    Abstract: A ceramic electronic device includes a multilayer structure having a substantially rectangular parallelepiped shape, a first cover layer, and a second cover layer that is provided on a second end of the multilayer structure in the stacking direction, a main component of the second cover layer being ceramic, a porosity of the second cover layer being higher than that of the first cover layer. Q=(A+B)/2C×100(%) is 0.5% or more and 1.6% or less, when, at an interface of the second cover layer on a side of the first cover layer, two heights of curvature portions of both ends of the interface are respectively a height A and a height B, and a shortest height from the first cover layer to the second cover layer is a height C.
    Type: Application
    Filed: June 8, 2022
    Publication date: January 5, 2023
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Kyosuke SHIMAZAKI, Takashi ASAI, Takayuki HATTORI, Keisuke ISHII, Shin NISHIURA, Yoshimasa KITAMURA, Hirotaka OHNO
  • Patent number: 11424076
    Abstract: A multi-layer ceramic capacitor having a weight of 8 mg or more includes a capacitance forming unit and a protective unit. The capacitance forming unit includes internal electrodes that are laminated in a first direction and includes end portions, positions of the end portions in a second direction orthogonal to the first direction being aligned with one another within a range of 0.5 ?m in the second direction. The protective unit covers the capacitance forming unit in the first direction and the second direction and includes an outer surface, a shortest distance between the outer surface and the end portion of an outermost layer in the internal electrodes in the first direction exceeding 10 ?m.
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: August 23, 2022
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Yuto Yamato, Takayuki Hattori, Takashi Asai, Hisamitsu Shizuno, Keisuke Ishii
  • Patent number: 11305637
    Abstract: A vehicle cooling system includes a circulation flow path section which has a first flow path section and a second flow path section, and a solenoid valve which can switch between an open state in which the first flow path section and the second flow path section are connected and a closed state in which the first flow path section and the second flow path section are blocked. The circulation flow path section includes a valve body accommodating section configured to include a first accommodating section and a second accommodating section which connects the first flow path section and the second flow path section in the open state, and a connection flow path section whose one end is connected to the first flow path section. The other end of the connection flow path section opens to the first accommodating section.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: April 19, 2022
    Assignees: SUBARU CORPORATION, NIDEC TOSOK CORPORATION
    Inventors: Naoki Hiraoka, Tomoya Ozawa, Takashi Asai, Daisuke Murata, Keita Kobayashi, Tomohiro Yasuda, Kenro Takahashi
  • Publication number: 20210366658
    Abstract: A ceramic electronic component includes a multilayer chip having a substantially rectangular parallelepiped shape and including a first multilayer structure and a second multilayer structure disposed on each of top and bottom faces of the first multilayer structure, the first multilayer structure including first ceramic dielectric layers having a first width in a first direction in which side faces of the multilayer chip are opposite to each other, the second multilayer structure including second internal electrode layers having a second width less than the first width in the first direction, and a pair of external electrodes formed from the respective two edge faces to at least one of side faces of the multilayer chip, wherein main components of the first and second internal electrode layers differ from a main component of the external electrodes.
    Type: Application
    Filed: May 19, 2021
    Publication date: November 25, 2021
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Yuto YAMATO, Takashi ASAI, Takayuki HATTORI
  • Publication number: 20210183583
    Abstract: A multi-layer ceramic capacitor having a weight of 8 mg or more includes a capacitance forming unit and a protective unit. The capacitance forming unit includes internal electrodes that are laminated in a first direction and includes end portions, positions of the end portions in a second direction orthogonal to the first direction being aligned with one another within a range of 0.5 ?m in the second direction. The protective unit covers the capacitance forming unit in the first direction and the second direction and includes an outer surface, a shortest distance between the outer surface and the end portion of an outermost layer in the internal electrodes in the first direction exceeding 10 ?m.
    Type: Application
    Filed: February 23, 2021
    Publication date: June 17, 2021
    Inventors: Yuto YAMATO, Takayuki HATTORI, Takashi ASAI, Hisamitsu SHIZUNO, Keisuke ISHII
  • Patent number: 10968848
    Abstract: An EGR device includes an EGR flow path, an EGR valve, a stepping motor, a motor driver, a return spring, a speed detector, and an opening degree estimator. The EGR flow path conveys exhaust gas from an exhaust flow path of an engine to an intake flow path. The EGR valve is disposed on the EGR flow path. The stepping motor drives the EGR valve to open to close. The motor driver supplies driving power to the stepping motor. The return spring urges the EGR valve in a valve closing direction. The speed detector detects an output shaft rotation speed of the engine. The opening degree estimator estimates an opening degree of the EGR valve. The motor driver changes a drive frequency of the stepping motor according to variations of the output shaft rotation speed detected by the speed detector and the opening degree estimated by the opening degree estimator.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: April 6, 2021
    Assignee: SUBARU CORPORATION
    Inventors: Keigo Endo, Takashi Asai, Tomoyuki Urayama
  • Patent number: 10964482
    Abstract: A multi-layer ceramic capacitor having a weight of 8 mg or more includes a capacitance forming unit and a protective unit. The capacitance forming unit includes internal electrodes that are laminated in a first direction and includes end portions, positions of the end portions in a second direction orthogonal to the first direction being aligned with one another within a range of 0.5 ?m in the second direction. The protective unit covers the capacitance forming unit in the first direction and the second direction and includes an outer surface, a shortest distance between the outer surface and the end portion of an outermost layer in the internal electrodes in the first direction exceeding 10 ?m.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: March 30, 2021
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Yuto Yamato, Takayuki Hattori, Takashi Asai, Hisamitsu Shizuno, Keisuke Ishii
  • Publication number: 20200300188
    Abstract: An EGR device includes an EGR flow path, an EGR valve, a stepping motor, a motor driver, a return spring, a speed detector, and an opening degree estimator. The EGR flow path conveys exhaust gas from an exhaust flow path of an engine to an intake flow path. The EGR valve is disposed on the EGR flow path. The stepping motor drives the EGR valve to open to close. The motor driver supplies driving power to the stepping motor. The return spring urges the EGR valve in a valve closing direction. The speed detector detects an output shaft rotation speed of the engine. The opening degree estimator estimates an opening degree of the EGR valve. The motor driver changes a drive frequency of the stepping motor according to variations of the output shaft rotation speed detected by the speed detector and the opening degree estimated by the opening degree estimator.
    Type: Application
    Filed: January 15, 2020
    Publication date: September 24, 2020
    Applicant: SUBARU CORPORATION
    Inventors: Keigo ENDO, Takashi ASAI, Tomoyuki URAYAMA
  • Publication number: 20190291569
    Abstract: A vehicle cooling system includes a circulation flow path section which has a first flow path section and a second flow path section, and a solenoid valve which can switch between an open state in which the first flow path section and the second flow path section are connected and a closed state in which the first flow path section and the second flow path section are blocked. The circulation flow path section includes a valve body accommodating section configured to include a first accommodating section and a second accommodating section which connects the first flow path section and the second flow path section in the open state, and a connection flow path section whose one end is connected to the first flow path section. The other end of the connection flow path section opens to the first accommodating section.
    Type: Application
    Filed: March 21, 2019
    Publication date: September 26, 2019
    Inventors: Naoki HIRAOKA, Tomoya OZAWA, Takashi ASAI, Daisuke MURATA, Keita KOBAYASHI, Tomohiro YASUDA, Kenro TAKAHASHI
  • Publication number: 20190189352
    Abstract: A multi-layer ceramic capacitor having a weight of 8 mg or more includes a capacitance forming unit and a protective unit. The capacitance forming unit includes internal electrodes that are laminated in a first direction and includes end portions, positions of the end portions in a second direction orthogonal to the first direction being aligned with one another within a range of 0.5 ?m in the second direction. The protective unit covers the capacitance forming unit in the first direction and the second direction and includes an outer surface, a shortest distance between the outer surface and the end portion of an outermost layer in the internal electrodes in the first direction exceeding 10 ?m.
    Type: Application
    Filed: December 14, 2018
    Publication date: June 20, 2019
    Inventors: YUTO YAMATO, TAKAYUKI HATTORI, TAKASHI ASAI, HISAMITSU SHIZUNO, KEISUKE ISHII
  • Patent number: 10176923
    Abstract: A ceramic electronic component includes a body, a first external electrode, and a second external electrode. The body includes a first end surface and a second end surface that face each other, surfaces each extending between the first end surface and the second end surface, an outer edge that is provided along the surfaces and includes recesses, the recesses extending from the first end surface and the second end surface along ridges of the surfaces, and a functional unit that is disposed inward relative to the outer edge. The first external electrode and the second external electrode respectively cover the first end surface and the second end surface and extend to come close to each other from the first end surface and the second end surface along the surfaces and the recesses.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: January 8, 2019
    Assignee: Taiyo Yuden Co., Ltd.
    Inventor: Takashi Asai
  • Patent number: 10131472
    Abstract: Provided is a vial rubber stopper using multiple types of rubber to prevent the vial rubber stopper from being scraped and from sticking to a presser plate. The vial rubber stopper includes: a cap portion having a flange; a piercing area formed to have a recess at a top surface of the cap portion and configured to traverse longitudinally the cap portion in an axial direction from the recess to a bottom surface of the cap portion; and a leg portion formed on the bottom surface of the cap portion in a way of extending downward and located outside the piercing area with respect to an axial center of the cap portion. The piercing area is formed of rubber having rubber hardness from 20 to 35, and the top surface other than the recess of the cap portion is formed of rubber having rubber hardness from 58 to 90.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: November 20, 2018
    Assignee: NIPRO CORPORATION
    Inventors: Takashi Asai, Tadatoshi Uchida, Masanobu Iwasa, Ryouji Komatsu
  • Publication number: 20170301470
    Abstract: A ceramic electronic component includes a body, a first external electrode, and a second external electrode. The body includes a first end surface and a second end surface that face each other, surfaces each extending between the first end surface and the second end surface, an outer edge that is provided along the surfaces and includes recesses, the recesses extending from the first end surface and the second end surface along ridges of the surfaces, and a functional unit that is disposed inward relative to the outer edge. The first external electrode and the second external electrode respectively cover the first end surface and the second end surface and extend to come close to each other from the first end surface and the second end surface along the surfaces and the recesses.
    Type: Application
    Filed: March 31, 2017
    Publication date: October 19, 2017
    Inventor: Takashi Asai
  • Publication number: 20170274741
    Abstract: A vehicle sun visor includes: a visor main body; and a slide component slidably mounted on the visor main body and including a slide main body, card holding parts provided so as to have clearances from the slide main body in a thickness direction, a stopper that restricts an amount of movement of a card inserted through the clearances into a gap between the slide main body and the card holding parts, the card moving along a surface of the slide main body, and a grip that protrudes from the slide main body, is gripped to slide the slide component relative to the visor main body, and serves as a part of the stopper.
    Type: Application
    Filed: September 27, 2016
    Publication date: September 28, 2017
    Applicant: Kyowa Sangyo Co., Ltd.
    Inventor: Takashi ASAI
  • Patent number: 9770964
    Abstract: A vehicle sun visor includes: a visor main body; and a slide component slidably mounted on the visor main body and including a slide main body, card holding parts provided so as to have clearances from the slide main body in a thickness direction, a stopper that restricts an amount of movement of a card inserted through the clearances into a gap between the slide main body and the card holding parts, the card moving along a surface of the slide main body, and a grip that protrudes from the slide main body, is gripped to slide the slide component relative to the visor main body, and serves as a part of the stopper.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: September 26, 2017
    Assignee: KYOWA SANGYO CO., LTD.
    Inventor: Takashi Asai
  • Patent number: 9434241
    Abstract: A vehicle sun visor includes: a sun visor body; a support shaft; and a damper configured to apply braking force at the time when the sun visor body turns. The damper includes: a rotor and a rotor case that supports the rotor such that the rotor is rotatable around its axis. The rotor includes a cylindrical portion in which the support shaft is inserted, the cylindrical portion being held so as to be non-rotatable with respect to the support shaft. The rotor case is held by the sun visor body in a state where the rotor case is non-rotatable with respect to the sun visor body.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: September 6, 2016
    Assignee: KYOWA SANGYO CO., LTD.
    Inventors: Takashi Asai, Kosuke Yamazaki
  • Publication number: 20150151612
    Abstract: A vehicle sun visor includes: a sun visor body; a support shaft; and a damper configured to apply braking force at the time when the sun visor body turns. The damper includes: a rotor and a rotor case that supports the rotor such that the rotor is rotatable around its axis. The rotor includes a cylindrical portion in which the support shaft is inserted, the cylindrical portion being held so as to be non-rotatable with respect to the support shaft. The rotor case is held by the sun visor body in a state where the rotor case is non-rotatable with respect to the sun visor body.
    Type: Application
    Filed: February 10, 2015
    Publication date: June 4, 2015
    Applicant: Kyowa Sangyo Co., Ltd.
    Inventors: Takashi ASAI, Kosuke YAMAZAKI
  • Patent number: 9033392
    Abstract: A vehicle sun visor includes: a sun visor body; a support shaft; and a damper configured to apply braking force at the time when the sun visor body turns. The damper includes: a rotor and a rotor case that supports the rotor such that the rotor is rotatable around its axis. The rotor includes a cylindrical portion in which the support shaft is inserted, the cylindrical portion being held so as to be non-rotatable with respect to the support shaft. The rotor case is held by the sun visor body in a state where the rotor case is non-rotatable with respect to the sun visor body.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: May 19, 2015
    Assignee: KYOWA SANGYO CO., LTD.
    Inventors: Takashi Asai, Kosuke Yamazaki