Patents by Inventor Akihiro Shiota

Akihiro Shiota 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: 9691549
    Abstract: A laminated ceramic capacitor that includes a laminated body that has dielectric ceramic layers including crystal grains and crystal grain boundaries and has internal electrode layers; and external electrodes on the surface of the laminated body and electrically connecting the internal electrode layers exposed at the surfaces of the laminated body. When a direct-current voltage is applied to the laminated ceramic capacitor, the voltage/current curve has a critical point dividing the curve into a first area on the lower-voltage side and a second area on the higher-voltage side, an electric field obtained by dividing the critical voltage at the critical point by the thickness of one of the dielectric ceramic layers when the voltage (V)/current (I) characteristics are measured at 25° C. is 10 V/?m or more, and the voltage/current curve has a slope of 3 or less in the second area.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: June 27, 2017
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Akihiro Shiota, Makoto Matsuda
  • Patent number: 9558886
    Abstract: A laminate body includes a plurality of ceramic layers and capacitor conductors embedded in the laminate body so as to be opposed to each other via one of the ceramic layers. The capacitor conductors are made of an Al-based material, and the capacitor conductors include narrow portions, respectively, which function as fuse elements. The narrow portions have an average width smaller than an average width of portions of the capacitor conductors other than the narrow portions. As a result, the electronic component has an improved capability to protect its function as a capacitor when a short circuit occurs between capacitor conductors.
    Type: Grant
    Filed: September 23, 2013
    Date of Patent: January 31, 2017
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Koichi Banno, Shoichiro Suzuki, Taisuke Kanzaki, Akihiro Shiota
  • Patent number: 9443654
    Abstract: A multilayer ceramic electronic component achieves a high electrostatic capacitance and includes an Al inner electrode superior in smoothness and conductivity. The multilayer ceramic electronic component includes a multilayer body including a plurality of stacked ceramic layers and a plurality of inner electrodes arranged along certain interfaces between the ceramic layers and containing Al as a main component, and an outer electrode located on an outer surface of the multilayer body. A surface of the inner electrode is covered with a layer including a noble metal or Ti as a main component.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: September 13, 2016
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Koichi Banno, Shoichiro Suzuki, Taisuke Kanzaki, Akihiro Shiota
  • Patent number: 9328026
    Abstract: A raw ceramic portion is formed on each of first and second lateral surfaces of a raw ceramic body. The raw ceramic portions contain ceramic particles and more of at least one constituent selected from Ba, Mg, Mn, and a rare-earth element between the ceramic particles than the ceramic section of the raw ceramic body in terms of total amount. The raw ceramic body is fired with the raw ceramic portions thereon. In this way, a ceramic electronic component is obtained that has a main body left after the raw ceramic body is fired with the raw ceramic portions thereon.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: May 3, 2016
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Kenichi Okajima, Daiki Fukunaga, Takayuki Yao, Yasunari Nakamura, Akihiro Shiota
  • Patent number: 9327405
    Abstract: A robot apparatus that performs the work of attaching a cable includes a gripper that grips the cable having first and second ends, the first end being fixed; an arm main body that guides the second end of the cable being gripped by the gripper to the interior of a guide area; a force sensor that is provided on the arm main body and detects that the gripper has come into contact with the second end of the cable; a camera that captures an image of the guide area when the force sensor detects that the gripper has come into contact with the second end of the cable; and an image processor that detects the posture of the second end of the cable based on the captured image. The robot apparatus performs the work of attaching the cable in accordance with the detected posture of the connector.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: May 3, 2016
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Akihiro Shiota, Ken Okawa, Toshiaki Ikeda
  • Patent number: 9275797
    Abstract: A dielectric ceramic that can be sintered at a sufficiently low temperature and has a desired specific resistance at a high temperature, and a multilayer ceramic electronic component (a multilayer ceramic capacitor and the like) using the dielectric ceramic are provided. The multilayer ceramic capacitor includes a multilayer body having a plurality of laminated dielectric ceramic layers, and a plurality of internal electrodes at interfaces between the dielectric ceramic layers; and external electrodes 8 and 9 on outer surfaces of the multilayer body. The composition of the multilayer body includes a perovskite-type compound containing Ba and Ti (where a part of Ba may be substituted by Ca, and a part of Ti may be substituted by Zr) as a primary ingredient, and further includes M (where M is at least one of Cu, Zn, Li, K, and Na) and Bi. The total content of M and Bi is equal to or greater than 3 molar parts when the total content of Ti and Zr is 100 molar parts.
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: March 1, 2016
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Shoichiro Suzuki, Koichi Banno, Akihiro Shiota, Masahiro Otsuka, Taisuke Kanzaki, Masanori Nakamura
  • Patent number: 9245688
    Abstract: A monolithic ceramic capacitor having a large capacity and high reliability includes a ceramic sintered body including a plurality of stacked ceramic layers, and first and second inner electrodes and alternately disposed inside the ceramic sintered body to be opposed to each other in a stacking direction of the ceramic layers with one of the ceramic layers being interposed between the adjacent first and second inner electrodes. The ceramic sintered body includes a first portion in which the first and second inner electrodes are opposed to each other, and a second portion positioned outside the first portion. A ratio (Ic/Ia) of c-axis peak intensity (Ic) to a-axis peak intensity (Ia) measured with an XRD analysis of the one of the ceramic layers is about 2 or more.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: January 26, 2016
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Akihiro Shiota
  • Patent number: 9202626
    Abstract: Provided in a dielectric ceramic having flat capacitance characteristics and a high dielectric constant, and a multilayer ceramic electronic component (such as a multilayer ceramic capacitor) in which the dielectric ceramic is used. A multilayer ceramic capacitor includes a multilayer body having a plurality of dielectric ceramic layers and a plurality of internal electrodes, and external electrodes formed on the multilayer body. The composition of the multilayer body includes any of a bismuth layered compound containing Sr, Bi and Ti, a bismuth layered compound containing Sr, Bi and Nb, and a bismuth layered compound containing Ca, Bi and Ti as a primary ingredient, Bi and at least one of Cu, Ba, Zn and Li, and satisfies the conditions that if the Ti content is 400 molar parts or the Nb content is 200 molar parts, then (Bi content-Ti content) or (Bi content-Nb content) is equal to or greater than 1 molar part and less than 7.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: December 1, 2015
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Shoichiro Suzuki, Koichi Banno, Taisuke Kanzaki, Akihiro Shiota
  • Publication number: 20150332854
    Abstract: A laminated ceramic electronic component has a variety of superior mechanical properties and electrical properties, including a high degree of freedom in the design for ceramic materials, and can be manufactured at low cost and with a low percentage of defective products. The laminated ceramic electronic component includes a laminate including a plurality of stacked ceramic layers and a plurality of internal electrodes containing Al as a main constituent, the internal electrodes being arranged along specific interfaces between the ceramic layers, and external electrodes located on an outer surface of the laminate, wherein surface layer sections of the internal electrodes include an Al2O3 layer.
    Type: Application
    Filed: July 30, 2015
    Publication date: November 19, 2015
    Inventors: Shoichiro SUZUKI, Koichi BANNO, Masahiro OTSUKA, Masanori NAKAMURA, Seiichi JONO, Taisuke KANZAKI, Akihiro SHIOTA
  • Patent number: 9129745
    Abstract: A laminated ceramic electronic component has a variety of superior mechanical properties and electrical properties, including a high degree of freedom in the design for ceramic materials, and can be manufactured at low cost and with a low percentage of defective products. The laminated ceramic electronic component includes a laminate including a plurality of stacked ceramic layers and a plurality of internal electrodes containing Al as a main constituent, the internal electrodes being arranged along specific interfaces between the ceramic layers, and external electrodes located on an outer surface of the laminate, wherein surface layer sections of the internal electrodes include an Al2O3 layer.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: September 8, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Shoichiro Suzuki, Koichi Banno, Masahiro Otsuka, Masanori Nakamura, Seiichi Jono, Taisuke Kanzaki, Akihiro Shiota
  • Patent number: 9064638
    Abstract: A dielectric ceramic enabling low-temperature firing and exhibiting good dielectric characteristics, and a stack ceramic electronic component using the same are provided. The dielectric ceramic containing (Ba1-x-yCaxSry)m(Ti1-zZrz)O3 (1.005?m?1.2, 0?x+y?0.2, and 0?z?0.2) as a major component and an amount of Bi relative to 100 parts by mol of the major component which is 1.0 part by mol or more and 40 parts by mol or less.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: June 23, 2015
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Shoichiro Suzuki, Masanori Nakamura, Koichi Banno, Taisuke Kanzaki, Akihiro Shiota, Masahiro Otsuka
  • Patent number: 8941975
    Abstract: Provided is a laminated ceramic electronic component which has excellent mechanical characteristics, internal electrode corrosion resistance, high degree of freedom in ceramic material design, low cost, low defective rate, and various properties. The laminated ceramic electronic component includes: a laminate which has a plurality of laminated ceramic layers and Al/Si alloy-containing internal electrodes at a plurality of specific interface between ceramic layers; and an external electrode formed on the outer surface of the laminate, wherein the Al/Si ratio of the Al/Si alloy is 85/15 or more.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: January 27, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Koichi Banno, Shoichiro Suzuki, Masanori Nakamura, Masahiro Otsuka, Taisuke Kanzaki, Akihiro Shiota
  • Patent number: 8885320
    Abstract: Provided is a laminated ceramic electronic component which has excellent mechanical characteristics, internal electrode corrosion resistance, high degree of freedom in ceramic material design, low cost, low defective rate, and various properties. The laminated ceramic electronic component includes: a laminate which has a plurality of laminated ceramic layers and Al/Mn alloy internal electrodes at a plurality of specific interfaces between the ceramic layers and an external electrode formed on the outer surface of the laminate, wherein the Al/Mn ratio of the Al/Mn alloy is 80/20 or more.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: November 11, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Shoichiro Suzuki, Koichi Banno, Masanori Nakamura, Masahiro Otsuka, Taisuke Kanzaki, Akihiro Shiota
  • Patent number: 8885321
    Abstract: Provided is a laminated ceramic electronic component which has excellent mechanical characteristics, internal electrode corrosion resistance, high degree of freedom in ceramic material design, low cost, low defective rate, and various properties. The laminated ceramic electronic component includes a laminate which has a plurality of laminated ceramic layers and internal electrodes formed along at a plurality of specific interface between the ceramic layers and having an Al/Ti alloy as a component; and an external electrode formed on the outer surface of the laminate. The Al/Ti ratio of the Al/Ti alloy is 91/9 or more.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: November 11, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Taisuke Kanzaki, Koichi Banno, Masahiro Otsuka, Shoichiro Suzuki, Akihiro Shiota, Masanori Nakamura
  • Patent number: 8879236
    Abstract: Provided is a laminated ceramic electronic component having excellent mechanical characteristics, internal electrode corrosion resistance, high degree of freedom in ceramic material design, low cost, low defective rate, and various properties. The laminated ceramic electronic component includes: a laminate which has a plurality of laminated ceramic layers and internal electrodes at a plurality of specific interfaces between the ceramic layers and having an Al/Ni alloy as a component; and an external electrode formed on the outer surface of the laminate, wherein the Al/Ni ratio of the Al/Ni alloy is 85/15 or more.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: November 4, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masahiro Otsuka, Koichi Banno, Akihiro Shiota, Shoichiro Suzuki, Taisuke Kanzaki, Masanori Nakamura
  • Publication number: 20140283353
    Abstract: A workpiece assembly line includes assembly units that assemble a workpiece, and a workpiece transfer unit that allows transfer of the workpiece between the workpiece transfer unit and each assembly unit. The assembly units are disposed around the workpiece transfer unit. The workpiece is transferred between the assembly units via the workpiece transfer unit.
    Type: Application
    Filed: March 18, 2014
    Publication date: September 25, 2014
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Toshiyuki HARADA, Toshiaki IKEDA, Ken OKAWA, Shinji OGASAWARA, Akihiro SHIOTA
  • Publication number: 20140288712
    Abstract: A robot device is provided, which includes an arm body having a screw-fastening mechanism, a detector for detecting a force applied to the arm body, and a controller for controlling the arm body based on a detection result of the detector at the time of a screw-fastening operation by the screw-fastening mechanism.
    Type: Application
    Filed: March 19, 2014
    Publication date: September 25, 2014
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Shinji OGASAWARA, Ken OKAWA, Toshiyuki HARADA, Akihiro SHIOTA, Toshiaki IKEDA
  • Publication number: 20140259613
    Abstract: A workpiece assembling apparatus includes: a conveyor configured to convey a workpiece; a plurality of robots arranged along the conveyor, the plurality of robots being configured to perform a same work on a workpiece conveyed by the conveyor; a parts-supplier configured to supply parts to the plurality of robots; and a controller configured to control the robots and the conveyor, wherein the controller controls the robot disposed at a downstream side to perform an unfinished work of the robot disposed at an upstream side in addition to a predetermined work in a case where the robot disposed at the upstream side has not completed a predetermined work.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: Kabushiki Kaisha Yaskawa Denki
    Inventors: Akihiro SHIOTA, Toshiyuki HARADA, Kenji MATSUFUJI, Ken OKAWA, Shinji OGASAWARA
  • Publication number: 20140277732
    Abstract: A robot apparatus that performs the work of attaching a cable includes a gripper that grips the cable having first and second ends, the first end being fixed; an arm main body that guides the second end of the cable being gripped by the gripper to the interior of a guide area; a force censer that is provided on the arm main body and detects that the gripper has come into contact with the second end of the cable; a camera that captures an image of the guide area when the force center detects that the gripper has come into contact with the second end of the cable; and an image processor that detects the posture of the second end of the cable based on the captured image. The robot apparatus performs the work of attaching the cable in accordance with the detected posture of the connector.
    Type: Application
    Filed: February 19, 2014
    Publication date: September 18, 2014
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Akihiro SHIOTA, Ken OKAWA, Toshiaki IKEDA
  • Publication number: 20140277657
    Abstract: A manufacturing system includes: a plurality of processing devices capable of outputting processing information including a processing detail performed to a work; a processing tool capable of outputting backup information including a processing detail performed to the work; and a management device configured create management information by associating the processing information and the backup information with identification information identifying the work.
    Type: Application
    Filed: February 19, 2014
    Publication date: September 18, 2014
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Ryosuke TSUTSUMI, Ken OKAWA, Toshiyuki HARADA, Akihiro SHIOTA, Kenji MATSUFUJI