Patents by Inventor Toshiki Nagamoto

Toshiki Nagamoto 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: 10090108
    Abstract: A multilayer ceramic capacitor having an external electrode with a glass phase, where an occupation rate of the glass phase is 30% to 60% on an area ratio, and a maximum length c of the glass phase is 5 ?m or less.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: October 2, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Tetsuya Kisumi, Toshiki Nagamoto, Yasuhiro Nishisaka, Yoko Okabe
  • Patent number: 9761376
    Abstract: In a multilayer ceramic capacitor in which an outer electrode is arranged on a ceramic element body to be electrically connected to an inner electrode, the outer electrode includes a metal electrode layer on the ceramic element body, and a conductive resin layer on the metal electrode layer. When a dielectric layer between a pair of the inner electrodes adjacent in a stacking direction among a plurality of the inner electrodes extending to one of a pair of end surfaces of the ceramic element body is an inter-electrode dielectric layer, a gap extends a direction connecting the adjacent inner electrodes sandwiching the inter-electrode dielectric layer at a position near or adjacent to at least the one of the end surfaces.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: September 12, 2017
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Toshiki Nagamoto
  • Publication number: 20170221635
    Abstract: A multilayer ceramic capacitor having an external electrode with a glass phase, where an occupation rate of the glass phase is 30% to 60% on an area ratio, and a maximum length c of the glass phase is 5 ?m or less.
    Type: Application
    Filed: April 11, 2017
    Publication date: August 3, 2017
    Inventors: Tetsuya Kisumi, Toshiki Nagamoto, Yasuhiro Nishisaka, Yoko Okabe
  • Patent number: 9653211
    Abstract: A conductive paste includes a metal powder, a glass frit containing a Si component, and an organic vehicle. The metal powder has a flat shape with a ratio a/b of a maximum length a to a maximum thickness b of 2.5 or more, a molar content of SiO2 in the glass frit is 36 to 59 percent by mole, and a volume content of the glass frit is 6 to 11 percent by volume. In external electrodes of a multilayer ceramic capacitor using this conductive paste, the molar content of SiO2 in a glass phase is 38 to 60 percent by mole, and an occupation rate of the glass phase is 30% to 60% on the area ratio, and a maximum length c of the glass phase is 5 ?m or less.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: May 16, 2017
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Tetsuya Kisumi, Toshiki Nagamoto, Yasuhiro Nishisaka, Yoko Okabe
  • Patent number: 9396832
    Abstract: An electroconductive paste that includes an inorganic filler which contains a spherical Cu powder of 3 ?m or less in average particle size; a flat Cu powder of 3 or more in aspect ratio and 10 ?m or more in average particle size; glass frit; and a spherical inorganic powder of 30 ?m or more in average particle size, the spherical inorganic powder including an inorganic material that is not melted in a heat treatment step for baking. The spherical inorganic powder is contained in a proportion of 10 to 35 parts by volume with respect to 100 parts by volume of a mixture of the spherical Cu powder and the flat Cu powder. In addition, the proportion of the flat Cu powder falls within the range of 10 to 50% by volume with respect to the total amount of the spherical Cu powder and flat Cu powder.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: July 19, 2016
    Assignee: MURATA MANUFACUTRING CO., LTD.
    Inventor: Toshiki Nagamoto
  • 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
  • Publication number: 20160093442
    Abstract: In a multilayer ceramic capacitor in which an outer electrode is arranged on a ceramic element body to be electrically connected to an inner electrode, the outer electrode includes a metal electrode layer on the ceramic element body, and a conductive resin layer on the metal electrode layer. When a dielectric layer between a pair of the inner electrodes adjacent in a stacking direction among a plurality of the inner electrodes extending to one of a pair of end surfaces of the ceramic element body is an inter-electrode dielectric layer, a gap extends a direction connecting the adjacent inner electrodes sandwiching the inter-electrode dielectric layer at a position near or adjacent to at least the one of the end surfaces.
    Type: Application
    Filed: September 11, 2015
    Publication date: March 31, 2016
    Inventor: Toshiki NAGAMOTO
  • 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
  • Patent number: 9232673
    Abstract: A ceramic electronic component includes a ceramic body; a plurality of internal electrodes provided in the ceramic body and including ends exposed on a surface of the ceramic body; a coating layer covering a surface portion of the ceramic body on which the internal electrodes are exposed, the coating layer being made of a glass or resin medium in which metal powder particles are dispersed; and an electrode terminal provided directly on the coating layer and including a plating film. The metal powder particles define conduction paths electrically connecting the internal electrodes with the electrode terminal and have an elongated shape in cross section along a thickness direction of the coating layer. The metal powder particles defining the conduction paths have a maximum diameter not smaller than the thickness of the coating layer.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: January 5, 2016
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Yasuhiro Nishisaka, Yukio Sanada, Tetsuya Kisumi, Toshiki Nagamoto
  • Patent number: 8971016
    Abstract: A monolithic ceramic capacitor includes an outer electrode arranged on a ceramic element body including inner electrodes, and a dielectric layer present between a pair of the inner electrodes adjacent in a stacking direction and extending to one of a pair of end surfaces of the ceramic element body that defines an inter-electrode dielectric layer. A gap extending in a direction connecting the inner electrodes sandwiching the inter-electrode dielectric layer is present in about 5% to about 90% of inter-electrode dielectric layers in the ceramic element body at a position near or adjacent to at least one of the pair of end surfaces of the ceramic element body.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: March 3, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Toshiki Nagamoto
  • Publication number: 20140347783
    Abstract: A conductive paste includes a metal powder, a glass frit containing a Si component, and an organic vehicle. The metal powder has a flat shape with a ratio a/b of a maximum length a to a maximum thickness b of 2.5 or more, a molar content of SiO2 in the glass frit is 36 to 59 percent by mole, and a volume content of the glass frit is 6 to 11 percent by volume. In external electrodes of a multilayer ceramic capacitor using this conductive paste, the molar content of SiO2 in a glass phase is 38 to 60 percent by mole, and an occupation rate of the glass phase is 30% to 60% on the area ratio, and a maximum length c of the glass phase is 5 ?m or less.
    Type: Application
    Filed: August 12, 2014
    Publication date: November 27, 2014
    Inventors: Tetsuya Kisumi, Toshiki Nagamoto, Yasuhiro Nishisaka, Yoko Okabe
  • Publication number: 20140329105
    Abstract: An electroconductive paste that includes an inorganic filler which contains a spherical Cu powder of 3 ?m or less in average particle size; a flat Cu powder of 3 or more in aspect ratio and 10 ?m or more in average particle size; glass frit; and a spherical inorganic powder of 30 ?m or more in average particle size, the spherical inorganic powder including an inorganic material that is not melted in a heat treatment step for baking. The spherical inorganic powder is contained in a proportion of 10 to 35 parts by volume with respect to 100 parts by volume of a mixture of the spherical Cu powder and the flat Cu powder. In addition, the proportion of the flat Cu powder falls within the range of 10 to 50% by volume with respect to the total amount of the spherical Cu powder and flat Cu powder.
    Type: Application
    Filed: July 15, 2014
    Publication date: November 6, 2014
    Inventor: Toshiki Nagamoto
  • Patent number: 7751175
    Abstract: A multilayer ceramic capacitor having external electrodes. Each of the external electrodes has a lower layer resistance electrode and an upper layer conductive electrode. A glass contained in the upper layer conductive electrode has a softening point higher than that of a glass contained in the lower layer resistance electrode by 20° C. or more.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: July 6, 2010
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Toshiki Nagamoto, Mitsuhiro Kusano
  • Publication number: 20090290281
    Abstract: A multilayer ceramic capacitor having external electrodes. Each of the external electrodes has a lower layer resistance electrode and an upper layer conductive electrode. A glass contained in the upper layer conductive electrode has a softening point higher than that of a glass contained in the lower layer resistance electrode by 20° C. or more.
    Type: Application
    Filed: August 7, 2009
    Publication date: November 26, 2009
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Toshiki Nagamoto, Mitsuhiro Kusano
  • Patent number: 7589954
    Abstract: Provided is a multilayer ceramic capacitor including external electrodes which also functions as a resistive element, and the external electrodes achieve strong bonding with internal electrodes containing Ni or a Ni alloy. The external electrodes include a resistive electrode layers contacting a ceramic laminate and internal electrodes. The resistive electrode layers contains a complex oxide which reacts with Ni or a Ni alloy contained in the internal electrodes in a proportion of 26 to 79% by weight, a glass component in a proportion of 20 to 56% by weight, and metal which reacts with Ni or a Ni alloy in a proportion of 1 to 18% by weight.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: September 15, 2009
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Mitsuhiro Kusano, Toshiki Nagamoto
  • Publication number: 20090190285
    Abstract: Provided is a multilayer ceramic capacitor including external electrodes which also functions as a resistive element, and the external electrodes achieve strong bonding with internal electrodes containing Ni or a Ni alloy. The external electrodes include a resistive electrode layers contacting a ceramic laminate and internal electrodes. The resistive electrode layers contains a complex oxide which reacts with Ni or a Ni alloy contained in the internal electrodes in a proportion of 26 to 79% by weight, a glass component in a proportion of 20 to 56% by weight, and metal which reacts with Ni or a Ni alloy in a proportion of 1 to 18% by weight.
    Type: Application
    Filed: April 8, 2009
    Publication date: July 30, 2009
    Applicant: MURATA MANUFACTURING CO., LTD
    Inventors: Mitsuhiro Kusano, Toshiki Nagamoto
  • Publication number: 20010016252
    Abstract: A conductive paste is provided which can ensure plating adhesion and joint strength between an external electrode and a ceramic body, and which can prevent sticking between electronic devices. The conductive paste, which contains substantially no alkaline earth metal and no lead, comprises powdered silver; a powdered glass containing an alkali metal oxide, boron oxide, silicon oxide, zinc oxide, and aluminum oxide; and an organic vehicle; wherein the powdered glass is composed of about 5 to 12 percent by weight of alkali metal oxide as M2O, M being at least one element selected from the group consisting of Li, Na, K, Rb, Cs and Fr, about 35 to 45 percent by weight of boron oxide as B2O3, about 10 to 20 percent by weight of silicon oxide as SiO2, about 35 to 45 percent by weight of zinc oxide as ZnO, and about 1 to 5 percent by weight of aluminum oxide as Al2O3.
    Type: Application
    Filed: February 6, 2001
    Publication date: August 23, 2001
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Toshiki Nagamoto, Kunihiko Hamada