Patents by Inventor Seiji Koga

Seiji Koga 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: 10522287
    Abstract: A multilayer ceramic electronic component in which an interface of an edge region of an external electrode that extends around to a side surface of a ceramic body and the ceramic configuring a surface of the ceramic body, an inorganic matter is present containing 26 mol % or more and less than 45 mol % of SiO2 and having a molar ratio (TiO2+ZrO2)/(SiO2+TiO2+ZrO2) of 0.154 or more, or an inorganic matter is present containing 45 mol % or more of SiO2 and having a molar ratio (TiO2+ZrO2)/(SiO2+TiO2+ZrO2) of 0.022 or more. Furthermore, the inorganic matter may contain B2O3 having a molar ratio relative to SiO2 within 0.25?B2O3/SiO2?0.5.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: December 31, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Seiji Koga, Takashi Omori, Jun Ikeda
  • Publication number: 20180268997
    Abstract: A multilayer ceramic electronic component in which an interface of an edge region of an external electrode that extends around to a side surface of a ceramic body and the ceramic configuring a surface of the ceramic body, an inorganic matter is present containing 26 mol % or more and less than 45 mol % of SiO2 and having a molar ratio (TiO2+ZrO2)/(SiO2+TiO2+ZrO2) of 0.154 or more, or an inorganic matter is present containing 45 mol % or more of SiO2 and having a molar ratio (TiO2+ZrO2)/(SiO2+TiO2+ZrO2) of 0.022 or more. Furthermore, the inorganic matter may contain B2O3 having a molar ratio relative to SiO2 within 0.25?B2O3/SiO2?0.5.
    Type: Application
    Filed: May 21, 2018
    Publication date: September 20, 2018
    Inventors: SEIJI KOGA, Takashi Omori, Jun Ikeda
  • Patent number: 10008326
    Abstract: A multilayer ceramic electronic component in which an interface of an edge region of an external electrode that extends around to a side surface of a ceramic body and the ceramic configuring a surface of the ceramic body, an inorganic matter is present containing 26 mol % or more and less than 45 mol % of SiO2 and having a molar ratio (TiO2+ZrO2)/(SiO2+TiO2+ZrO2) of 0.154 or more, or an inorganic matter is present containing 45 mol % or more of SiO2 and having a molar ratio (TiO2+ZrO2)/(SiO2+TiO2+ZrO2) of 0.022 or more. Furthermore, the inorganic matter may contain B2O3 having a molar ratio relative to SiO2 within 0.25?B2O3/SiO2?0.5.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: June 26, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Seiji Koga, Takashi Omori, Jun Ikeda
  • Patent number: 9978519
    Abstract: A multilayer ceramic electronic component includes a ceramic body having an end surface and a side surface adjacent to thereto such that the end surface and the side surface meet at an edge. The ceramic body has a plurality of internal electrodes with adjacent pairs of the internal electrodes being separated by a respective ceramic layer. An external electrode containing a metal, an inorganic component and voids is electrically connected to at least some of the internal electrodes and both covers the end surface and extends over the edge onto the side surface to form an extending-around portion which extends at least 50 ?m onto the side surface as measured in a direction perpendicular to the edge and ends at a leading edge remote from the edge. A portion of the extending-around area which extends 50 ?m from the leading edge towards the edge has an average occupancy area ratio which is at least 25 but not greater than 75.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: May 22, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Takashi Omori, Seiji Koga, Jun Ikeda
  • Patent number: 9934907
    Abstract: An external electrode included in a laminated ceramic electronic component is formed on a ceramic body by baking a conductive paste including a glass component. The ceramic body with the conductive paste applied thereto is subjected to heat treatment under the conditions where the top temperature is 800° C. or higher, and the electromotive force at the top temperature is 600 to 900 mV. In this heat treatment, the glass component in the conductive paste penetrates into grain boundaries between ceramic grains of the ceramic body, and a crystalline substance containing elements constituting the glass component is generated which has dissolving resistance against plating solutions.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: April 3, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Seiji Koga, Takashi Omori
  • Patent number: 9842694
    Abstract: A multilayer ceramic electronic component in which an interface of an edge region of an external electrode that extends around to a side surface of a ceramic body and the ceramic of the surface of the ceramic body in contact therewith, there exists glass (a) containing BaO serving as a first alkaline earth oxide and at least one of CaO and SrO serving as a second alkaline earth oxide, (b) having a total content ratio of the first alkaline earth oxide and the second alkaline earth oxide in a range of 30 to 70 mol %, and (c) having an SiO2 content ratio in a range of 15 to 60 mol %. The molar ratio of the first alkaline earth oxide to the second alkaline earth oxide is in a range of 0.1 to 0.5.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: December 12, 2017
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Seiji Koga, Tomochika Miyazaki
  • Patent number: 9831037
    Abstract: A monolithic ceramic electronic component having outer electrodes that include an inorganic substance containing at least Si, a crystal phase C containing at least Si, Ti, and Ba at the interfaces to a ceramic layer in peripheral end portions of the outer electrodes. A value of the crystal phase area ratio indicating the relationship between the area of the crystal phase C and the area of a glass phase G, which are formed at the interface to the ceramic layer, in a region within 5 ?m from the peripheral end portion of the outer electrode is within a range of 75% to 98%.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: November 28, 2017
    Assignee: MURATA MANUFATURING CO., LTD.
    Inventors: Takashi Omori, Seiji Koga, Jun Ikeda
  • Patent number: 9812258
    Abstract: A ceramic electronic component wherein outer electrode is placed over both end portions of a ceramic body. A first coating mainly containing Ni and a second coating containing Sn, solder, or the like are placed on a surface of the outer electrode. The outer electrode includes an end-surface portion and a side-surface turnover portion. The outer electrode includes a glass layer which is placed in a region within at least 5 ?m in linear distance L from a covering end portion of the side-surface turnover portion in a direction toward the end-surface portion so as to be in contact with the ceramic body and which contains, at least, Si. The average thickness t of the glass layer is 3 ?m to 10 ?m. The content of a Si component is 11% by weight or more (preferably 40% by weight or less).
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: November 7, 2017
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Takashi Omori, Seiji Koga
  • Publication number: 20170162331
    Abstract: A monolithic ceramic electronic component having outer electrodes that include an inorganic substance containing at least Si, a crystal phase C containing at least Si, Ti, and Ba at the interfaces to a ceramic layer in peripheral end portions of the outer electrodes. A value of the crystal phase area ratio indicating the relationship between the area of the crystal phase C and the area of a glass phase G, which are formed at the interface to the ceramic layer, in a region within 5 ?m from the peripheral end portion of the outer electrode is within a range of 75% to 98%.
    Type: Application
    Filed: February 24, 2017
    Publication date: June 8, 2017
    Inventors: Takashi Omori, Seiji Koga, Jun Ikeda
  • Patent number: 9620290
    Abstract: A monolithic ceramic electronic component having outer electrodes that include an inorganic substance containing at least Si, a crystal phase C containing at least Si, Ti, and Ba at the interfaces to a ceramic layer in peripheral end portions of the outer electrodes. A value of the crystal phase area ratio indicating the relationship between the area of the crystal phase C and the area of a glass phase G, which are formed at the interface to the ceramic layer, in a region within 5 ?m from the peripheral end portion of the outer electrode is within a range of 75% to 98%.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: April 11, 2017
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Takashi Omori, Seiji Koga, Jun Ikeda
  • Publication number: 20160196920
    Abstract: A multilayer ceramic electronic component in which an interface of an edge region of an external electrode that extends around to a side surface of a ceramic body and the ceramic configuring a surface of the ceramic body, an inorganic matter is present containing 26 mol % or more and less than 45 mol % of SiO2 and having a molar ratio (TiO2+ZrO2)/(SiO2+TiO2+ZrO2) of 0.154 or more, or an inorganic matter is present containing 45 mol % or more of SiO2 and having a molar ratio (TiO2+ZrO2)/(SiO2+TiO2+ZrO2) of 0.022 or more. Furthermore, the inorganic matter may contain B2O3 having a molar ratio relative to SiO2 within 0.25?B2O3/SiO2?0.5.
    Type: Application
    Filed: March 11, 2016
    Publication date: July 7, 2016
    Inventors: SEIJI KOGA, Takashi Omori, Jun Ikeda
  • Publication number: 20160196922
    Abstract: A multilayer ceramic electronic component includes a ceramic body having an end surface and a side surface adjacent to thereto such that the end surface and the side surface meet at an edge. The ceramic body has a plurality of internal electrodes with adjacent pairs of the internal electrodes being separated by a respective ceramic layer. An external electrode containing a metal, an inorganic component and voids is electrically connected to at least some of the internal electrodes and both covers the end surface and extends over the edge onto the side surface to form an extending-around portion which extends at least 50 ?m onto the side surface as measured in a direction perpendicular to the edge and ends at a leading edge remote from the edge. A portion of the extending-around area which extends 50 ?m from the leading edge towards the edge has an average occupancy area ratio which is at least 25 but not greater than 75.
    Type: Application
    Filed: March 16, 2016
    Publication date: July 7, 2016
    Inventors: TAKASHI OMORI, Seiji Koga, Jun Ikeda
  • Publication number: 20160181016
    Abstract: A multilayer ceramic electronic component in which an interface of an edge region of an external electrode that extends around to a side surface of a ceramic body and the ceramic of the surface of the ceramic body in contact therewith, there exists glass (a) containing BaO serving as a first alkaline earth oxide and at least one of CaO and SrO serving as a second alkaline earth oxide, (b) having a total content ratio of the first alkaline earth oxide and the second alkaline earth oxide in a range of 30 to 70 mol %, and (c) having an SiO2 content ratio in a range of 15 to 60 mol %. The molar ratio of the first alkaline earth oxide to the second alkaline earth oxide is in a range of 0.1 to 0.5.
    Type: Application
    Filed: March 2, 2016
    Publication date: June 23, 2016
    Inventors: Seiji Koga, Tomochika Miyazaki
  • Patent number: 9340181
    Abstract: A belt member includes: a strip member having an elongate shape; a fastener disposed along the longitudinal direction of the strip member; and an opening-closing device that opens or closes the fastener. For reducing a contact pressure of the belt member per unit area, the fastener is opened by the opening-closing device to unfold the belt member into a form of a wide strip so that the width of the belt member is increased. On the other hand, when the fastener is closed by the opening-closing device, the belt member takes a form of a narrow tube so that the width of the belt member is reduced.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: May 17, 2016
    Assignees: TOYOTA BOSHOKU KABUSHIKI KAISHA, YKK CORPORATION
    Inventors: Masahiro Fukamoto, Atsuki Ito, Nobuhiro Yamada, Makoto Yamazaki, Yasuhiko Matsuda, Seiji Koga
  • Publication number: 20160133398
    Abstract: A ceramic electronic component includes a ceramic body, a glass coating layer, and an electrode terminal. The ceramic body includes a plurality of internal electrodes whose ends are exposed on the surface of the ceramic body. The glass coating layer covers a portion of the ceramic body on which the internal electrodes are exposed. The electrode terminal is provided directly on the glass coating layer. The electrode terminal includes a plating film. The glass coating layer is made of a glass medium in which metal powder particles are dispersed. The metal powder particles define conduction paths that electrically connect the internal electrodes with the electrode terminal.
    Type: Application
    Filed: January 20, 2016
    Publication date: May 12, 2016
    Inventors: Yasuhiro NISHISAKA, Yukio SANADA, Tetsuya KISUMI, Toshiki NAGAMOTO, Masato KIMURA, Seiji KOGA
  • Patent number: 9275804
    Abstract: A ceramic electronic component includes a ceramic body, a glass coating layer, and an electrode terminal. The ceramic body includes a plurality of internal electrodes whose ends are exposed on the surface of the ceramic body. The glass coating layer covers a portion of the ceramic body on which the internal electrodes are exposed. The electrode terminal is provided directly on the glass coating layer. The electrode terminal includes a plating film. The glass coating layer is made of a glass medium in which metal powder particles are dispersed. The metal powder particles define conduction paths that electrically connect the internal electrodes with the electrode terminal.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: March 1, 2016
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Yasuhiro Nishisaka, Yukio Sanada, Tetsuya Kisumi, Toshiki Nagamoto, Masato Kimura, Seiji Koga
  • Publication number: 20150279570
    Abstract: An external electrode included in a laminated ceramic electronic component is formed on a ceramic body by baking a conductive paste including a glass component. The ceramic body with the conductive paste applied thereto is subjected to heat treatment under the conditions where the top temperature is 800° C. or higher, and the electromotive force at the top temperature is 600 to 900 mV. In this heat treatment, the glass component in the conductive paste penetrates into grain boundaries between ceramic grains of the ceramic body, and a crystalline substance containing elements constituting the glass component is generated which has dissolving resistance against plating solutions.
    Type: Application
    Filed: June 15, 2015
    Publication date: October 1, 2015
    Inventors: Seiji Koga, Takashi Omori
  • Publication number: 20150239427
    Abstract: A belt member includes: a strip member having an elongate shape; a fastener disposed along the longitudinal direction of the strip member; and an opening-closing device that opens or closes the fastener. For reducing a contact pressure of the belt member per unit area, the fastener is opened by the opening-closing device to unfold the belt member into a form of a wide strip so that the width of the belt member is increased. On the other hand, when the fastener is closed by the opening-closing device, the belt member takes a form of a narrow tube so that the width of the belt member is reduced.
    Type: Application
    Filed: February 18, 2015
    Publication date: August 27, 2015
    Applicants: TOYOTA BOSHOKU KABUSHIKI KAISHA, YKK Corporation
    Inventors: Masahiro FUKAMOTO, Atsuki ITO, Nobuhiro YAMADA, Makoto YAMAZAKI, Yasuhiko MATSUDA, Seiji KOGA
  • Publication number: 20150213959
    Abstract: A monolithic ceramic electronic component having outer electrodes that include an inorganic substance containing at least Si, a crystal phase C containing at least Si, Ti, and Ba at the interfaces to a ceramic layer in peripheral end portions of the outer electrodes. A value of the crystal phase area ratio indicating the relationship between the area of the crystal phase C and the area of a glass phase G, which are formed at the interface to the ceramic layer, in a region within 5 ?m from the peripheral end portion of the outer electrode is within a range of 75% to 98%.
    Type: Application
    Filed: April 7, 2015
    Publication date: July 30, 2015
    Inventors: Takashi Omori, Seiji Koga, Jun Ikeda
  • Patent number: 9062401
    Abstract: A method of sewing a fastener stringer includes the steps of conveying a fastener stringer and an attached body to a sewing section of a sewing machine in a state with the fastener stringer superposed on the attached body, and arranging an element guide section in the sewing section of the sewing machine, bending a fastener tape in a direction in which a tape bent section opens, guiding the element rows to the element guide section, and sewing the fastener tape to the attached body. Accordingly, the method enables a sewing line formed by a sewing thread to be disposed at a predetermined position and the fastener tape and the attached body to be easily and efficiently sewn together.
    Type: Grant
    Filed: December 25, 2009
    Date of Patent: June 23, 2015
    Assignee: YKK Corporation
    Inventors: Haruo Matsushima, Koji Ito, Tetsuya Yoshino, Seiji Koga