Patents by Inventor Naoki Nakagawa

Naoki Nakagawa 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: 10107338
    Abstract: Provided is a method of manufacturing an outer joint member of a constant velocity universal joint, which is constructed by welding a cup member and a shaft member, the method including: forming the cup member and the shaft member of medium carbon steel; preparing; preparing; bringing the joining end surface of the cup member and the joining end surface of the shaft member into abutment against each other; welding the cup member and the shaft member; and performing, after the welding, ultrasonic flaw detection-inspection from any one of a surface side of the cup member and a surface side of the shaft member, which has the another one of the joining end surface of the cup member and the joining end surface of the shaft member.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: October 23, 2018
    Assignee: NTN CORPORATION
    Inventors: Hiromi Nagai, Naoki Nakagawa, Yasuhiko Sakakibara, Tatsuro Sugiyama, Masazumi Kobayashi
  • Patent number: 10074722
    Abstract: The present technique relates to a transistor that uses an oxide semiconductor as its channel layer and that is capable of suppressing fluctuations in threshold voltage, and to a thin-film transistor substrate and a liquid crystal display that include such a transistor. The transistor is configured such that an overlap length, which is a length of overlap in plan view between the source electrode and the channel protective film in a direction from the source electrode toward the drain electrode, is longer than an overlap length, which is a length of overlap in plan view between the drain electrode and the channel protective film in a direction from the drain electrode toward the source electrode.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: September 11, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Rii Hirano, Yusuke Yamagata, Naoki Nakagawa
  • Publication number: 20180026103
    Abstract: The present technique relates to a transistor that uses an oxide semiconductor as its channel layer and that is capable of suppressing fluctuations in threshold voltage, and to a thin-film transistor substrate and a liquid crystal display that include such a transistor. The transistor is configured such that an overlap length, which is a length of overlap in plan view between the source electrode and the channel protective film in a direction from the source electrode toward the drain electrode, is longer than an overlap length, which is a length of overlap in plan view between the drain electrode and the channel protective film in a direction from the drain electrode toward the source electrode.
    Type: Application
    Filed: April 14, 2016
    Publication date: January 25, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Rii HIRANO, Yusuke YAMAGATA, Naoki NAKAGAWA
  • Patent number: 9876039
    Abstract: A thin-film transistor substrate constituting a liquid crystal display includes: a thin-film transistor including, a gate electrode, a gate insulating film covering the gate electrode, a semiconductor layer opposing the gate electrode via the gate insulating film, a channel protective film covering the semiconductor layer, a protective film covering over the channel protective film, source and drain electrodes in contact with the semiconductor layer through first contact holes penetrating through the protective film and the channel protective film; a first electrode electrically connected to the drain electrode; a gate wiring extending from the gate electrode; and a source wiring electrically connected to the source electrode. The source wiring and first electrode are respectively electrically connected to the source electrode and drain electrode through respective second contact holes penetrating through the protective film.
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: January 23, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Rii Hirano, Naoki Nakagawa, Takaaki Murakami, Kazunori Inoue, Koji Oda
  • Publication number: 20180011537
    Abstract: A plurality of excitation electrodes, each disposed along a row direction, are provided on a back side of a transparent substrate, and a plurality of detection electrodes, each disposed along a column direction, a plurality of tactile sensation generation row electrodes, each disposed along the row direction, and a plurality of tactile sensation generation column electrodes, each disposed along the column direction, are provided on the front side of the transparent substrate. The front side of the transparent substrate is defined as an operation screen. The excitation electrodes and the tactile sensation generation row electrodes are formed independently of each other, and the detection electrodes and the tactile sensation generation column electrodes are formed independently of each other. In the configuration, the excitation electrodes among the electrodes are situated furthest from the operation screen.
    Type: Application
    Filed: February 5, 2016
    Publication date: January 11, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masafumi AGARI, Naoki NAKAGAWA, Tae ORITA, Takeshi ONO, Seiichiro MORI
  • Publication number: 20170373098
    Abstract: A thin-film transistor substrate constituting a liquid crystal display includes: a thin-film transistor including, a gate electrode, a gate insulating film covering the gate electrode, a semiconductor layer opposing the gate electrode via the gate insulating film, a channel protective film covering the semiconductor layer, a protective film covering over the channel protective film, source and drain electrodes in contact with the semiconductor layer through first contact holes penetrating through the protective film and the channel protective film; a first electrode electrically connected to the drain electrode; a gate wiring extending from the gate electrode; and a source wiring electrically connected to the source electrode. The source wiring and first electrode are respectively electrically connected to the source electrode and drain electrode through respective second contact holes penetrating through the protective film.
    Type: Application
    Filed: January 5, 2016
    Publication date: December 28, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Rii HIRANO, Naoki NAKAGAWA, Takaaki MURAKAMI, Kazunori INOUE, Koji ODA
  • Patent number: 9760229
    Abstract: A touch screen according to the present invention includes: a transparent substrate; a plurality of row-direction wirings and a plurality of column-direction wirings provided on the transparent substrate, the row-direction wirings and the column-direction wirings intersecting via an inter-layer insulating film with each other in a stereoscopic view; a plurality of lead-out wirings each provided to be electrically extended from each of first ends of the said row-direction wirings and the column-direction wirings; and a shield wiring provided to surround in a planar view the row-direction wirings, the column-direction wirings, and the lead-out wirings, wherein the row-direction wirings, the column-direction wirings, and the shield wiring have comb-teeth parts which are formed to have comb-teeth shapes such that distances from the shield wiring to the row-direction wirings and the column-direction wirings are small at predetermined parts.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: September 12, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuya Nakamura, Takeshi Ono, Takashi Miyayama, Naoki Nakagawa, Masafumi Agari, Tae Orita
  • Patent number: 9746036
    Abstract: A welding method for an outer joint member of a constant velocity universal joint includes constructing a cup section having track grooves, which engage with torque transmitting elements, formed along an inner periphery thereof and a shaft section that is formed on a bottom portion of the cup section by two or more separate members, joining a cup member forming the cup section and a shaft member forming the shaft section, and melt-welding end portions of the cup member and the shaft member. The cup member and the shaft member are shaped so that a sealed hollow cavity portion is formed when the end portions of the cup member and the shaft member are brought into abutment against each other, the melt-welding of the end portions being performed when the sealed hollow cavity portion is under atmospheric pressure or lower.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: August 29, 2017
    Assignee: NTN CORPORATION
    Inventors: Masahiro Tosaji, Naoki Nakagawa
  • Publication number: 20170234836
    Abstract: An inspection device inspects a joint-type outer joint member of a constant velocity universal joint that includes a cup section having a bottomed cylindrical shape and track grooves in an inner periphery thereof for torque transmitting elements, and a shaft section extending from a bottom of the cup section. The inspection device inspects the outer joint member, which is obtained through melt-welding on a cup member forming the cup section and a shaft member forming the shaft section. The inspection device includes a surface inspection unit to inspect for a defect which appears on a surface of the outer joint member due to welding, an internal inspection unit to inspect for an internal defect of a welded portion, and a recording unit to record an inspection result of the inspection. The inspection device is configured to efficiently perform in-line total inspection for the melt-welded joint-type outer joint member.
    Type: Application
    Filed: July 23, 2015
    Publication date: August 17, 2017
    Applicant: NTN CORPORATION
    Inventors: Hiromi NAGAI, Daisuke KAGAWA, Naoki NAKAGAWA, Takashi IMANAKA, Yasuhiko SAKAKIBARA, Tokio UEDA, Masazumi KOBAYASHI, Tatsuro SUGIYAMA
  • Publication number: 20170159719
    Abstract: In an outer joint member of a constant velocity universal joint, a cup member and a shaft member are made of medium to high carbon steel and welded together. The cup member has a bottomed cylindrical shape that is opened at one end, and includes a cylindrical portion, a bottom portion, and a short shaft section of a solid shaft shape protruding from the bottom portion and having a joining end surface. The shaft member has a solid shaft shape and a joining end surface. The joining end surfaces of the cup and shaft members are brought into abutment against each other, and a high energy intensity beam is radiated from an outer side in a radial direction to form a welded portion. A structure of a molten metal at the welded portion is in a mixed phase of ferrite and granular cementite.
    Type: Application
    Filed: May 20, 2015
    Publication date: June 8, 2017
    Inventors: Daisuke KAGAWA, Tsuneaki HIRAOKA, Shintaro SUZUKI, Naoki NAKAGAWA, Tatsuro SUGIYAMA, Masazumi KOBAYASHI
  • Publication number: 20170139509
    Abstract: Detection column wires and detection row wires are configured of thin wires made of a conductive material having light reflectivity, such as a metal or alloy including silver and aluminum. A predetermined plural number of detection column wires are electrically connected to form a plurality of column-direction bundle wires. A predetermined plural number of detection row wires are electrically connected to form a plurality of row-direction bundle wires. A reflected-light distribution pattern is further provided. When viewed in a direction vertical to the surface of the touch screen, the reflected-light distribution pattern includes a curved portion, and the normal lines of the curved portion head for all directions.
    Type: Application
    Filed: January 31, 2017
    Publication date: May 18, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takahiro NISHIOKA, Naoki NAKAGAWA, Masafumi AGARI, Takeshi ONO, Seiichiro MORI
  • Publication number: 20170130780
    Abstract: A method of manufacturing an outer joint member of a constant velocity universal joint includes forming cup and shaft members of medium carbon steel, preparing, as the cup member, a cup member having cylindrical and bottom portions integrally formed by forging, and a joining end surface formed on an outer surface of the bottom portion, and preparing, as the shaft member, a shaft member having a joining end surface to be joined to the bottom portion of the cup member. The method also includes bringing the joining end surfaces of the cup and shaft members into abutment against each other, and welding the cup and shaft members from an outer side of the cup member to an abutment portion between the cup and shaft members in a radial direction of the cup members.
    Type: Application
    Filed: May 20, 2015
    Publication date: May 11, 2017
    Inventors: Takeshi SHIMASAWA, Naoki NAKAGAWA, Tsuneaki HIRAOKA, Shintaro SUZUKI, Tatsuro SUGIYAMA, Masazumi KOBAYASHI
  • Patent number: 9645695
    Abstract: Detection column wires and detection row wires are formed by fine wires made of a light-reflective conductive material. The detection column wires are divided into a plurality of column-direction wire bundles each including a predetermined number of detection column wires electrically connected to one another. The detection row wires are divided into a plurality of row-direction wire bundles each including a predetermined number of detection row wires electrically connected to one another. Reflected light distribution patterns are further provided. The reflected light distribution patterns each include a curved portion that is curved when viewed from a direction perpendicular to a surface of a touch screen, are arranged so that normals to the curved portion are directed towards all directions, and are dispersed so that regions, of curved portions, in which normals are perpendicular to a longitudinal direction of pixels are not aligned with each other in the longitudinal direction of the pixels.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: May 9, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tae Orita, Naoki Nakagawa, Takeshi Ono, Masafumi Agari, Seiichiro Mori, Takashi Miyayama, Takuji Imamura, Tatsuya Nakamura
  • Publication number: 20170120368
    Abstract: A method of manufacturing an outer joint member of a constant velocity universal joint includes forming cup and shaft members of medium carbon steel, the cup member being manufactured by preparing a cup member having cylindrical and bottom portions being integrally formed, and a fitting hole formed in a thick portion of the bottom portion, the shaft member being manufactured by preparing a shaft member having a fitting outer surface formed at an end portion of the shaft member to be joined to the bottom portion of the cup member, and fitting the fitting hole of the cup member to the fitting outer surface of the shaft member. The method also includes welding the cup and shaft members from an inner side of the cup member to a fitted portion between the cup and shaft members.
    Type: Application
    Filed: May 20, 2015
    Publication date: May 4, 2017
    Inventors: Naoki NAKAGAWA, Shintaro SUZUKI
  • Publication number: 20170120369
    Abstract: For butt-welding, which includes bringing joining end surfaces of a cup member and a shaft member into abutment against each other and radiating a high energy intensity beam from a radially outer side, the shaft member has a recess on a radially inner side of the joining end surface to obtain a welded portion having a closed hollow cavity on a radially inner side after butt-welding. The joining end surface (protruding surface) of the cup member protrudes toward a radially inner side with respect to an inner diameter of the joining end surface of the shaft member. With this, a welded portion of an outer joint member of a constant velocity universal joint, which is manufactured by joining the cup member and the shaft member, can be improved in strength and quality.
    Type: Application
    Filed: May 20, 2015
    Publication date: May 4, 2017
    Inventors: Naoki NAKAGAWA, Shintaro SUZUKI, Kenichi NAKANO, Takuya FUJITA, Kiyohiro SUZUKI, Renji NATSUME, Tatsuro SUGIYAMA, Masazumi KOBAYASHI
  • Publication number: 20170115451
    Abstract: [Object] In an optical fiber cable including a plurality of optical fiber units each formed by tying optical fibers in a bundle, preferable water resistance is to be achieved without increasing an outer diameter of the optical fiber cable. [Solution] An optical fiber cable includes: a plurality of optical fiber units each including a plurality of optical fibers and a bundling member wound around an outer periphery of a bundle of the plurality of optical fibers, the bundling member having a surface to which a water-absorbent granular substance is detachably attached.
    Type: Application
    Filed: April 28, 2015
    Publication date: April 27, 2017
    Applicants: FUJIKURA, LTD., NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Yoshie SAJIMA, Kouji TOMIKAWA, Ken OSATO, Masayoshi YAMANAKA, Naoki OKADA, Shinya HAMAGUCHI, Naoki NAKAGAWA, Yusuke YAMADA, Hisaaki NAKANE
  • Patent number: 9603239
    Abstract: Detection column wires and detection row wires are configured of thin wires made of a conductive material having light reflectivity, such as a metal or alloy including silver and aluminum. A predetermined plural number of detection column wires are electrically connected to form a plurality of column-direction bundle wires. A predetermined plural number of detection row wires are electrically connected to form a plurality of row-direction bundle wires. A reflected-light distribution pattern is further provided. When viewed in a direction vertical to the surface of the touch screen, the reflected-light distribution pattern includes a curved portion, and the normal lines of the curved portion head for all directions.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: March 21, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takahiro Nishioka, Naoki Nakagawa, Masafumi Agari, Takeshi Ono, Seiichiro Mori
  • Publication number: 20170075461
    Abstract: A display panel includes: a display functional portion formed of a display functional layer sandwiched between transparent substrates facing each other; and a touch screen portion that includes lower wiring and upper wiring made of a conductive metal material, that includes an interlayer insulating film located between the lower wiring and the upper wiring, and that includes a protective film covering the lower wiring, the upper wiring, and the interlayer insulating film. The lower wiring of the touch screen portion is formed on a surface on an observer side of the transparent substrate on the observer side.
    Type: Application
    Filed: December 22, 2014
    Publication date: March 16, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tae ORITA, Naoki NAKAGAWA, Takeshi ONO, Masafumi AGARI, Seiichiro MORI, Takashi MIYAYAMA, Takuji IMAMURA
  • Publication number: 20170074329
    Abstract: Provided is a method of manufacturing an outer joint member of a constant velocity universal joint, which is constructed by welding a cup member and a shaft member, the method including: forming the cup member and the shaft member of medium carbon steel; preparing; preparing; bringing the joining end surface of the cup member and the joining end surface of the shaft member into abutment against each other; welding the cup member and the shaft member; and performing, after the welding, ultrasonic flaw detection-inspection from any one of a surface side of the cup member and a surface side of the shaft member, which has the another one of the joining end surface of the cup member and the joining end surface of the shaft member.
    Type: Application
    Filed: March 20, 2015
    Publication date: March 16, 2017
    Applicant: NTN CORPORATION
    Inventors: Hiromi NAGAI, Naoki NAKAGAWA, Yasuhiko SAKAKIBARA, Tatsuro SUGIYAMA, Masazumi KOBAYASHI
  • Patent number: D777321
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: January 24, 2017
    Assignee: Nipro Corporation
    Inventors: Hiroyuki Nakagami, Masayuki Uenishi, Naoki Nakagawa, Shingo Sakamoto, Ryuhei Koinuma