Patents Assigned to Citizen Watch Co., Ltd.
  • Publication number: 20210318902
    Abstract: A cooperation system includes a first terminal device and a second terminal device. The first terminal device acquires output information defined by a service block program or information for generating the output information from an external device in accordance with a trigger generated by a trigger generation unit of the second terminal device, and generates an action command for causing an action execution unit defined by an action block program to execute an action based on the acquired information. With this configuration, a service can be properly provided.
    Type: Application
    Filed: August 27, 2019
    Publication date: October 14, 2021
    Applicant: CITIZEN WATCH CO., LTD.
    Inventors: Ryutaro UEMURA, Daisuke MATSUOH
  • Patent number: 11145795
    Abstract: A light-emitting apparatus and a method for manufacturing the same are provided in which heat dissipation from an LED package to a heat sinking substrate is improved while electrical insulation therebetween is ensured. The light-emitting apparatus includes a circuit board having an opening, an LED package inserted into the opening from the back side of the circuit board and having an edge connected to the back side of the circuit board, and a heat sinking substrate disposed on the back side of the circuit board so as to be in contact with the LED package.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: October 12, 2021
    Assignees: CITIZEN ELECTRONICS CO., LTD., CITIZEN WATCH CO., LTD.
    Inventors: Koki Hirasawa, Nodoka Oyamada, Yuji Omori
  • Patent number: 11137722
    Abstract: A wristwatch (an example of a timepiece) includes a small dial (an example of a dial) and a rotary disk (an example of a rotary member). The small dial includes a sun mark for displaying the state of the sun. The rotary disk covers the small dial and rotates in a 24-hour period. The rotary disk includes the sun state indicator that changes the visibility of the sun mark in accordance with the rotational position of the rotary disk. One of the small dial and the rotary member includes a plurality of numbers (an example of indexes) for indicating time. The other of the small dial and the rotary member includes a time indicator that indicates a number in accordance with the rotational position of the rotary disk. The time indicator and the sun state indicator are disposed relative to each other in a positional relationship such that the visibility of the sun mark by the sun state indicator corresponds to the state of the sun corresponding to the number indicated by the time indicator.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: October 5, 2021
    Assignee: Citizen Watch Co., Ltd.
    Inventor: Noriaki Mitamura
  • Publication number: 20210299732
    Abstract: To provide a rod member feeding device that reduces the load on a spindle chuck and a finger chuck when a rod member is positioned, as well as providing a machine tool provided with the rod member feeding device, and a control method for the rod member feeding device. A rod member feeding device includes: a feed rod for supplying a rod member to a spindle; a servomotor for moving the feed rod along the axial direction of the spindle; and a control device (exemplified with a motor control device and a control device) for controlling the driving of the servomotor. The control device calculates a deviation between a command position based on an advance amount of the feed rod and the actual position of the feed rod that has been actually advanced by the driving of the servomotor, and controls the driving of the servomotor based on the magnitude of the deviation.
    Type: Application
    Filed: March 4, 2021
    Publication date: September 30, 2021
    Applicants: CITIZEN WATCH CO., LTD., CITIZEN MACHINERY CO., LTD.
    Inventors: Kiyohiko WATANABE, Takanori SHINOHARA, Kenji SHIMIZU
  • Patent number: 11131010
    Abstract: A titanium alloy of the present invention includes aluminum at a ratio of 28.0 at % or more and 38.0 at % or less, iron at a ratio of 2.0 at % or more and 6.0 at % or less, and titanium and inevitable impurities as the balance or includes aluminum at a ratio of 28.0 at % or more and 38.0 at % or less, manganese at a ratio of 4.0 at % or more and 8.0 at % or less, and titanium and inevitable impurities as the balance. Further, the titanium alloy of the present invention may include silicon at a ratio of 0.3 at % or more and 1.5 at % or less.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: September 28, 2021
    Assignees: National Institute for Materials Science, Citizen Watch Co., Ltd.
    Inventors: Toshimitsu Tetsui, Masahiro Satoh, Takayuki Ogawa
  • Publication number: 20210291294
    Abstract: A machine tool includes a first main shaft, a first drive source for moving the first main shaft, a second main shaft, a second drive source for moving the second main shaft, and a control means for carrying out a control so as to bring the workpiece held by the first main shaft and the workpiece held by the second main shaft into contact with each other while rotating them relative to each other, thereby to carry out the friction-heating, and to stop the relative rotation of the pair of workpieces and move only the second main shaft in the axial direction while holding the first main shaft stationary, thereby to carry out friction-welding of the pair of workpieces. The control means controls the operation of the first drive source upon the friction-welding of the pair of workpieces, so as to maintain the axial position of the first main shaft.
    Type: Application
    Filed: July 16, 2019
    Publication date: September 23, 2021
    Applicants: CITIZEN WATCH CO., LTD., CITIZEN MACHINERY CO., LTD.
    Inventors: Takaichi NAKAYA, Ai KIKUCHI
  • Patent number: 11127544
    Abstract: A spring has a dome portion having a dome shape bulging convexly, an outer peripheral portion disposed along the entire periphery of the dome portion, first and second support portions disposed at both ends of the outer peripheral portion, a valley bending portion disposed between the dome portion and the outer peripheral portion, and bent concavely upward, a first crest bending portion disposed between the outer peripheral portion and the first support portion, and bent convexly upward, and a second crest bending portion disposed between the outer peripheral portion and the second support portion, and bent convexly upward, wherein the outer peripheral portion includes a first and second side end portions which are not connected with the first and second support portions, and the valley bending portion disposed between the dome portion and the first and second side end portions extends linearly or curved inwardly in a longitudinal direction.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: September 21, 2021
    Assignees: CITIZEN ELECTRONICS CO., LTD., CITIZEN WATCH CO., LTD.
    Inventor: Yoshihiro Yaginuma
  • Patent number: 11101748
    Abstract: Provided is a method of manufacturing an electrostatic induction transducer, the method including: providing a conductive substrate; providing a first electret material film on a first surface of the conductive substrate; providing a second electret material film on a second surface of the conductive substrate; forming a through hole that penetrates the conductive substrate, the first electret material film, and the second electret material film; mounting a supported member being conductive to the conductive substrate while allowing the conductive substrate to move in an in-plane direction; and applying charges to the first electret material film and the second electret material film by a charging process.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: August 24, 2021
    Assignee: CITIZEN WATCH CO., LTD.
    Inventors: Toshinari Maeda, Makoto Watanabe, Yasuo Kitajima, Izumi Yamamoto
  • Publication number: 20210254204
    Abstract: A method for manufacturing a golden member includes a first heating step and a second heating step. The first heating step is a step of heating, in the atmosphere of mixed gas including nitrogen gas and water vapor, a raw material member including titanium or a titanium alloy at 670° C. or higher and 730° C. or lower for 150 minutes or more and 200 minutes or less. The second heating step is a step of heating, in the atmosphere of nitrogen gas or in the atmosphere of mixed gas including nitrogen gas and inert gas, the raw material member passing through the first heating step at 670° C. or higher and 730° C. or lower for 30 minutes or more and 120 minutes or less so as to obtain a golden member including titanium or a titanium alloy.
    Type: Application
    Filed: April 25, 2019
    Publication date: August 19, 2021
    Applicant: CITIZEN WATCH CO., LTD.
    Inventor: Kenya KARUISHI
  • Publication number: 20210259049
    Abstract: A portable communication device cooperation system includes a slave portable communication device that can communicate with a master portable communication device. Each of a plurality of slave-side slots of a slave-side storage unit included in the slave portable communication device stores a slave application program transferred from a master-side slot disposed in the master portable communication device. The slave application program includes part of information of a master application program, and causes the slave portable communication device to operate by being executed by a slave-side control unit of the slave portable communication device. As a result, the portable communication device cooperation system, the master portable communication device, and the slave portable communication device exhibit an effect of enabling the slave portable communication device to be variously used.
    Type: Application
    Filed: April 16, 2019
    Publication date: August 19, 2021
    Applicant: CITIZEN WATCH CO., LTD.
    Inventors: Daisuke MATSUOH, Ryutaro UEMURA
  • Patent number: 11086063
    Abstract: A planar light unit is provided that suppresses appearance of a bright line when viewed from the side of the emission surface of the light guide plate. The planar light unit includes a light source, and a light guide plate including an incident surface for receiving light emitted from the light source, an emission surface from which the light introduced through the incident surface is emitted, an opposing surface disposed so as to oppose the emission surface, and a side surface disposed along an outer periphery of the emission surface and the opposing surface. The emission surface has a non-rectangular outer shape, and at least a part of the side surface is formed as a diffusing surface.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: August 10, 2021
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Toshinobu Katsumata, Junji Miyashita
  • Patent number: 11086273
    Abstract: Provided is a drive circuit for a two-coil stepper motor, including: a rotor; a stator including first, second, and third stator magnetic-pole portions; a coil A to be magnetically coupled to the first stator magnetic-pole portion and the third stator magnetic-pole portion; a coil B to be magnetically coupled to the second stator magnetic-pole portion and the third stator magnetic-pole portion; a drive pulse generation circuit configured to output a drive pulse; a detection pulse generation circuit configured to output a detection pulse for detecting counter-electromotive currents generated in the coil A and the coil B; and a rotation detection circuit configured to receive a detection signal generated due to the detection pulse as input to determine whether or not the rotor has rotated.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: August 10, 2021
    Assignee: CITIZEN WATCH CO., LTD.
    Inventors: Yu Takyoh, Toshiaki Fukushima, Toshinari Maeda, Daisuke Iri, Daisuke Matsuoh
  • Patent number: 11084101
    Abstract: To provide a machine tool and a control device for the machine tool that allows a user to select the vibration condition according to an input number of rotations and an input number of vibrations.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: August 10, 2021
    Assignee: CITIZEN WATCH CO., LTD.
    Inventors: Masahiro Muramatsu, Daisuke Sakashita, Haruhiko Misono
  • Publication number: 20210222285
    Abstract: To provide a decorative member having a cherry blossom pink color. A cherry blossom pink decorative member of the present invention includes a base and a decorative coating formed on the base, wherein the decorative coating is formed by layering an undercoat layer and a finishing layer from the base side, the undercoat layer is a carbonitride layer composed of a carbonitride of a metal containing Ti and at least one selected from Nb and Ta, and the finishing layer is a Au alloy layer composed of an alloy containing Au, a metal having a silver color, and Cu.
    Type: Application
    Filed: March 27, 2017
    Publication date: July 22, 2021
    Applicant: CITIZEN WATCH CO., LTD.
    Inventor: Kotaro TAKAZAKI
  • Patent number: 11069277
    Abstract: A display system includes mobile devices each including a position detection unit that detects a position, a physical quantity detection unit that detects a physical quantity, a display unit that displays an image, and a process unit that can perform a process of controlling the display unit so that the image is displayed. The process unit can perform an overlapping display process in which the process unit controls the display unit so as to display a physical quantity image expressing the physical quantity detected by the physical quantity detection unit in a manner of overlapping on a travel route image expressing a travel route of the mobile device that is determined depending on the position detected by the position detection unit.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: July 20, 2021
    Assignee: CITIZEN WATCH CO., LTD.
    Inventors: Ryutaro Uemura, Daisuke Matsuoh, Toshinori Okazaki, Shoya Kaneko, Ayaka Ohtake
  • Publication number: 20210217564
    Abstract: A spring has a dome portion having a dome shape bulging convexly, an outer peripheral portion disposed along the entire periphery of the dome portion, first and second support portions disposed at both ends of the outer peripheral portion, a valley bending portion disposed between the dome portion and the outer peripheral portion, and bent concavely upward, a first crest bending portion disposed between the outer peripheral portion and the first support portion, and bent convexly upward, and a second crest bending portion disposed between the outer peripheral portion and the second support portion, and bent convexly upward, wherein the outer peripheral portion includes a first and second side end portions which are not connected with the first and second support portions, and the valley bending portion disposed between the dome portion and the first and second side end portions extends linearly or curved inwardly in a longitudinal direction.
    Type: Application
    Filed: February 14, 2020
    Publication date: July 15, 2021
    Applicant: CITIZEN WATCH CO., LTD.
    Inventor: Yoshihiro YAGINUMA
  • Patent number: 11059688
    Abstract: A printer includes a first route to which a sheet from a roll paper is to be fed, a drive roller arranged on the first route and capable of sending the sheet, an image forming part (thermal printer head), a second route branched from the first route, a route changer for switching a route of the sheet, a curl corrector provided on the second route, and a cutter (cutting unit) provided on the first route. The curl corrector is configured to form the route with a curl correction roller and a guide member, and an advancing direction of the route is changeable 100 degrees or more when the sheet passes through the curl corrector.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: July 13, 2021
    Assignees: CITIZEN WATCH CO., LTD, CITIZEN SYSTEMS JAPAN CO., LTD.
    Inventors: Akira Takahashi, Naohisa Sawai
  • Patent number: 11054809
    Abstract: A control device for a machine tool to efficiently and successively produce a plurality of different-shaped products is provided. In the control device, each driving shaft of modules is assigned to different control systems.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: July 6, 2021
    Assignees: Citizen Watch Co., Ltd., Citizen Machinery Co., Ltd.
    Inventors: Shuichi Watabe, Hitoshi Matsumoto
  • Patent number: D924714
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: July 13, 2021
    Assignee: Citizen Watch Co., Ltd.
    Inventor: Gisuke Tokuyama
  • Patent number: D925524
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: July 20, 2021
    Assignee: Citizen Watch Co., Ltd.
    Inventor: Naoaki Okamura