Patents by Inventor Atsushi Homma

Atsushi Homma 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: 20200251935
    Abstract: The rectifying device converts high-frequency power input from an input terminal into direct current power and outputs the direct current power from an output terminal. The rectifying device includes a rectifier that converts the high-frequency power into the direct current power, and an impedance changer having one end connected to a connection point of the rectifier and the output terminal and the other end to which reference voltage is applied such that impedance varies while having a negative correlation with respect to an absolute value of voltage of the direct current power. When the absolute value of the voltage of the direct current power is greater than a predetermined value that is lower than reverse withstand voltage of the rectifying element included in the rectifier, the impedance of the impedance changer as viewed from the rectifier is a value regarded as corresponding to a short circuit.
    Type: Application
    Filed: August 29, 2018
    Publication date: August 6, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Toshiyuki TANAKA, Jun SHIMOKAWATOKO, Masaomi TSURU, Atsushi YAMAMOTO, Yukihiro HOMMA
  • Patent number: 10707302
    Abstract: A semiconductor device manufacturing method includes: a pretreatment step of performing a hydrophobic treatment on a first exposed region of an exposed surface, an n-type semiconductor layer being exposed from the first exposed region, and a pn junction being exposed from the exposed surface; an impurity supplying step of supplying an n-type impurity to the first exposed region; a channel stopper forming step of irradiating the first exposed region with a laser beam to introduce the n-type impurity into the n-type semiconductor layer, thus forming a channel stopper; and a glass layer forming step of forming a glass layer using a glass composition so as to cover the exposed surface.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: July 7, 2020
    Assignee: SHINDENGEN ELECTRIC MANUFACTURING CO., LTD.
    Inventors: Atsushi Ogasawara, Fumihiro Homma
  • Publication number: 20200177742
    Abstract: A communication management system, a communication system, a communication control method, and a recording medium.
    Type: Application
    Filed: November 29, 2019
    Publication date: June 4, 2020
    Inventors: Takeshi HOMMA, Shigeru NAKAMURA, Yuichi KAWASAKI, Hiroshi HINOHARA, Kenichiro MORITA, Atsushi MIYAMOTO
  • Publication number: 20200083321
    Abstract: A semiconductor device manufacturing method includes: a pretreatment step of performing a hydrophobic treatment on a first exposed region of an exposed surface, an n-type semiconductor layer being exposed from the first exposed region, and a pn junction being exposed from the exposed surface; an impurity supplying step of supplying an n-type impurity to the first exposed region; a channel stopper forming step of irradiating the first exposed region with a laser beam to introduce the n-type impurity into the n-type semiconductor layer, thus forming a channel stopper; and a glass layer forming step of forming a glass layer using a glass composition so as to cover the exposed surface.
    Type: Application
    Filed: November 25, 2016
    Publication date: March 12, 2020
    Inventors: Atsushi OGASAWARA, Fumihiro HOMMA
  • Patent number: 10573009
    Abstract: Provided is an in vivo movement tracking apparatus configured to track a portion of interest that moves in vivo, in which accuracy and robustness of tracking are improved. The apparatus is configured to determine an estimated position of ah organ in a biological image based on the past movement of the organ and search for contour points corresponding to a plurality of control points, respectively, representing a contour shape of the organ in a region corresponding to the estimated position, to thereby determine an estimated contour of the organ based on the contour points. The in vivo movement tracking apparatus is configured to determine a position of a portion of interest, which moves in association with the organ, based on the estimated contour with reference to previously acquired sample data regarding a positional relationship between a contour of the organ and the portion of interest.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: February 25, 2020
    Assignees: THE UNIVERSITY OF TOKYO, THE UNIVERSITY OF ELECTRO-COMMUNICATIONS, PUBLIC UNIVERSITY CORPORATION YOKOHAMA CITY UNIVERSITY
    Inventors: Norihiro Koizumi, Atsushi Kayasuga, Kyohei Tomita, Izumu Hosoi, Yu Nishiyama, Hiroyuki Tsukihara, Hideyo Miyazaki, Hiroyuki Fukuda, Kazushi Numata, Kiyoshi Yoshinaka, Takashi Azuma, Naohiko Sugita, Yukio Homma, Yoichiro Matsumoto, Mamoru Mitsuishi
  • Patent number: 10514522
    Abstract: A lens drive unit that prevents an actuator from being inclined is provided. In the lens drive unit, when a lens frame is displaced in a direction orthogonal to a direction in which the actuator extends and contracts with respect to a base member by, for example, impact from an outside of the lens drive unit, a drive shaft of the actuator abuts on a first lateral wall and a column, so that the actuator is prevented from being inclined with respect to the base member.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: December 24, 2019
    Assignee: TDK CORPORATION
    Inventors: Masahiro Hosokawa, Naoki Yusa, Seiji Fukuoka, Mio Hamashima, Toshiki Maruyama, Hiroshi Tojo, Mitsunao Homma, Takuto Horii, Atsushi Ezawa, Tatsuya Taki
  • Publication number: 20190331640
    Abstract: An electric transmission mechanism according to one aspect of the present invention may include a tubular ring fixed to a shaft electively connected to an electrode, at least one brush slidably contacting with a circumferential surface of the ring, a bearing including an inner race fixed to the ring, and a housing which is fixed to an outer race of the bearing and accommodates a contact part of the ring and the brush therein.
    Type: Application
    Filed: April 23, 2019
    Publication date: October 31, 2019
    Applicant: Yokogawa Electric Corporation
    Inventors: Takeshi KUWAGATA, Megumi Goto, Hikaru Shimizu, Saori Handa, Yukiko Hirano, Masaru Homma, Atsushi Otaki, Hideyuki Yagihashi
  • Patent number: 10429606
    Abstract: A lens drive unit that offers enhanced reliability in connection between an actuator electrode and an electric wire is provided. In the lens drive unit, an actuator has a weight housed in an holding portion of a base member and is thereby fixed in the base member. Electrodes on a lateral surface of the weight directly contact respective terminal electrodes on an inner lateral surface of the holding portion, so that an electrical connection is established therebetween. The arrangement enhances reliability in connection between the actuator electrodes and the terminal electrodes.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: October 1, 2019
    Assignee: TDK CORPORATION
    Inventors: Toshiki Maruyama, Naoki Yusa, Seiji Fukuoka, Masahiro Hosokawa, Mio Hamashima, Hiroshi Tojo, Mitsunao Homma, Takuto Horii, Atsushi Ezawa, Tatsuya Taki
  • Patent number: 9103239
    Abstract: A valve opening-closing timing control device includes: a driving rotating body that rotates synchronously with a crankshaft; a following rotating body that rotates integrally with a cam shaft; a phase control mechanism that controls changing of relative rotational phases of the driving and following rotating bodies; a torsion coil spring engaged by a front member of the driving rotating body and by the following driving body, and biases the following rotating body in an advance/retarded direction with respect to the driving rotating body. The front member includes multiple bearing surfaces to be attached with countersunk head screws, and an engaging part engaging an end of the torsion coil spring with the torsion coil spring in a twisted state. The engaging part includes a mounting part for a tool with which the end of the torsion coil spring is moved in a direction increasing torsion strength of the torsion coil spring.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: August 11, 2015
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yuji Noguchi, Akihiko Kusaka, Atsushi Homma, Takeo Asahi, Kazunari Adachi
  • Patent number: 9004028
    Abstract: Even when sliding occurs between a radially extending face of a spring member and at least one of a driving-side rotary member and a driven-side rotary member, wear of the at least one of the driving-side rotary member and the driven-side rotary member is prevented. Along the axial direction of the camshaft, a torsion spring is provided between the driven-side rotary member and a housing side face portion for urging the relative rotational phase to the angle advancing direction or the angle retarding direction, and a spring washer is disposed between the driven-side rotary member and the torsion spring.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: April 14, 2015
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Yuji Noguchi, Kazunari Adachi, Atsushi Homma, Takeo Asahi
  • Patent number: 8915223
    Abstract: Provided is a valve timing control apparatus that allows relaxation of manufacturing precision of a driving-side rotary member and a driven-side rotary member and that achieves space saving at the same time. An urging member includes at least one trough-folded portion and at least one crest-folded portion, one end side contact portion formed between one terminal end of the urging member and the trough-folded portion and coming into contact with a sealing element, and other end side contact portion formed between the other terminal end of the urging member and the crest-folded portion and coming into contact with a partitioning portion. In association with urging of the urging member, the distance between the one end side contact portion and the other end side contact portion along the urging direction is decreased and the angles of the trough-folded portion and the crest-folded portion are decreased.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: December 23, 2014
    Assignees: Aisin Seiki Kabushiki Kaisha, Yamani Spring Co., Ltd.
    Inventors: Atsushi Homma, Kazunari Adachi, Yuji Noguchi, Satoshi Nishizawa
  • Patent number: 8910604
    Abstract: A valve timing control device that enables simplification of the manufacturing process and reduction of the number of parts while suppressing deformation of a driven rotary element. The valve timing control device includes a driving rotary element, a driven rotary element, a plurality of partitions each for dividing a fluid pressure chamber into a regarded angle chamber and an advanced angle chamber, and a connecting element for connecting the driven rotary element to a camshaft. The connecting element includes a press fitting portion having a plurality of fitting segments configured to fit to an inner circumference of a recess of the driven rotary element. At least one of centerlines of the fitting segments extending in a radial direction does not overlap any of the partitions.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: December 16, 2014
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Kazunari Adachi, Yuji Noguchi, Atsushi Homma, Takeo Asahi
  • Patent number: 8910605
    Abstract: A valve timing control device includes a driving rotary element synchronously rotatable with a crankshaft; a driven rotary element mounted coaxially with the driving rotary element and synchronously rotatable with a camshaft; a plurality of partitions provided in the driven rotary element each for dividing a fluid pressure chamber formed between the driving rotary element and the driven rotary element into a regarded angle chamber and an advanced angle chamber; and a connecting element for connecting the driven rotary element to the camshaft. The connecting element includes a flange inserted into a recess formed in the driven rotatory element, and a shaft portion inserted into a through bore formed in a wall of the driving rotary element adjacent to the camshaft. The flange has an outer diameter larger than that of the shaft portion, and is disposed between the driven rotary element and the wall.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: December 16, 2014
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Kazunari Adachi, Yuji Noguchi, Atsushi Homma, Takeo Asahi
  • Patent number: 8881697
    Abstract: A valve timing control apparatus includes a drive-side rotation member synchronously rotating with a crankshaft of an internal combustion engine, a driven-side rotation member integrally rotating with a camshaft, a rotational phase adjusting device including a retarded angle chamber and an advanced angle chamber, the rotational phase adjusting device adjusting the relative rotational phase between the drive-side rotation member and the driven-side rotation member, and a boss member provided at a portion of the driven-side rotation member facing an outer wall surface of the internal combustion engine and including a thrust surface that extends to be perpendicular to a rotational axis of the camshaft and that is exposed to the outer wall surface of the internal combustion engine. The boss member causes the drive-side rotation member to be prevented from making contact with the outer wall surface by making contact with the outer wall surface of the internal combustion engine.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: November 11, 2014
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Yuji Noguchi, Atsushi Homma, Takeo Asahi
  • Publication number: 20140311432
    Abstract: A valve opening-closing timing control device includes: a driving rotating body that rotates synchronously with a crankshaft; a following rotating body that rotates integrally with a cam shaft; a phase control mechanism that controls changing of relative rotational phases of the driving and following rotating bodies; a torsion coil spring engaged by a front member of the driving rotating body and by the following driving body, and biases the following rotating body in an advance/retarded direction with respect to the driving rotating body. The front member includes multiple bearing surfaces to be attached with countersunk head screws, and an engaging part engaging an end of the torsion coil spring with the torsion coil spring in a twisted state. The engaging part includes a mounting part for a tool with which the end of the torsion coil spring is moved in a direction increasing torsion strength of the torsion coil spring.
    Type: Application
    Filed: December 10, 2012
    Publication date: October 23, 2014
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yuji Noguchi, Akihiko Kusaka, Atsushi Homma, Takeo Asahi, Kazunari Adachi
  • Publication number: 20130269638
    Abstract: A valve timing control device includes a driving rotary element synchronously rotatable with a crankshaft; a driven rotary element mounted coaxially with the driving rotary element and synchronously rotatable with a camshaft; a plurality of partitions provided in the driven rotary element each for dividing a fluid pressure chamber formed between the driving rotary element and the driven rotary element into a regarded angle chamber and an advanced angle chamber; and a connecting element for connecting the driven rotary element to the camshaft. The connecting element includes a flange inserted into a recess formed in the driven rotatory element, and a shaft portion inserted into a through bore formed in a wall of the driving rotary element adjacent to the camshaft. The flange has an outer diameter larger than that of the shaft portion, and is disposed between the driven rotary element and the wall.
    Type: Application
    Filed: January 23, 2012
    Publication date: October 17, 2013
    Applicant: Aisin Seiki Kabushiki Kaisha
    Inventors: Kazunari Adachi, Yuji Noguchi, Atsushi Homma, Takeo Asahi
  • Patent number: 8544433
    Abstract: A variable valve timing control apparatus, includes a drive-side rotary member, a driven-side rotary member, a partition portion arranged at least one of the drive-side rotary member and the driven-side rotary member to partition a fluid pressure chamber into an advanced angle chamber and a retarded angle chamber, a seal member arranged at a portion of the partition portion, which faces the other one of the drive-side rotary member and the driven-side rotary member, the seal member avoiding a hydraulic fluid from leaking between the advanced angle chamber and the retarded angle chamber, and a biasing member biasing the seal member, wherein at least one of the partition portion and a facing surface of the other one of the drive-side rotary member and the driven-side rotary member facing the partition portion is defined by an inclined surface of a tapered portion.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: October 1, 2013
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Yuji Noguchi, Kazunari Adachi, Takeo Asahi, Atsushi Homma
  • Publication number: 20130247855
    Abstract: A valve timing control device that enables simplification of the manufacturing process and reduction of the number of parts while suppressing deformation of a driven rotary element. The valve timing control device includes a driving rotary element, a driven rotary element, a plurality of partitions each for dividing a fluid pressure chamber into a regarded angle chamber and an advanced angle chamber, and a connecting element for connecting the driven rotary element to a camshaft. The connecting element includes a press fitting portion having a plurality of fitting segments configured to fit to an inner circumference of a recess of the driven rotary element. At least one of centerlines of the fitting segments extending in a radial direction does not overlap any of the partitions.
    Type: Application
    Filed: January 23, 2012
    Publication date: September 26, 2013
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Kazunari Adachi, Yuji Noguchi, Atsushi Homma, Takeo Asahi
  • Publication number: 20130213327
    Abstract: Provided is a valve timing control apparatus that allows relaxation of manufacturing precision of a driving-side rotary member and a driven-side rotary member and that achieves space saving at the same time. An urging member includes at least one trough-folded portion and at least one crest-folded portion, one end side contact portion formed between one terminal end of the urging member and the trough-folded portion and coming into contact with a sealing element, and other end side contact portion formed between the other terminal end of the urging member and the crest-folded portion and coming into contact with a partitioning portion. In association with urging of the urging member, the distance between the one end side contact portion and the other end side contact portion along the urging direction is decreased and the angles of the trough-folded portion and the crest-folded portion are decreased.
    Type: Application
    Filed: October 14, 2011
    Publication date: August 22, 2013
    Applicants: YAMANI SPRING CO., LTD., AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Atsushi Homma, Kazunari Adachi, Yuji Noguchi, Satoshi Nishizawa
  • Publication number: 20130167787
    Abstract: Even when sliding occurs between a radially extending face of a spring member and at least one of a driving-side rotary member and a driven-side rotary member, wear of the at least one of the driving-side rotary member and the driven-side rotary member is prevented. Along the axial direction of the camshaft, a torsion spring is provided between the driven-side rotary member and a housing side face portion for urging the relative rotational phase to the angle advancing direction or the angle retarding direction, and a spring washer is disposed between the driven-side rotary member and the torsion spring.
    Type: Application
    Filed: October 11, 2011
    Publication date: July 4, 2013
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yuji Noguchi, Kazunari Adachi, Atsushi Homma, Takeo Asahi