Patents by Inventor Kiyoyasu Sakurada

Kiyoyasu Sakurada 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: 11017950
    Abstract: A ceramic electronic component includes a ceramic body, an inner electrode, an outer electrode, and a connecting portion. The inner electrode is disposed inside the ceramic body. The end portion of the inner electrode extends to a surface of the ceramic body. The outer electrode is disposed on the surface of the ceramic body so as to cover the end portion of the inner electrode. The outer electrode includes a resin and a metal. The connecting portion is disposed so as to extend from an inside of the outer electrode to an inside of the ceramic body. In a portion of the surface of the ceramic body on which the outer electrode is disposed, the length of the connecting portion that extends in a direction in which the inner electrode is extends about 2.4 ?m or more.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: May 25, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Kota Zenzai, Hisayoshi Omori, Takashi Kanayama, Kiyoyasu Sakurada, Naoki Shimizu, Seiji Katsuta, Shinji Otani
  • Publication number: 20200075220
    Abstract: A multilayer coil component includes an element body that includes a plurality of insulating layers laminated together, a coil that is embedded in the element body and that includes a plurality of coil conductor layers provided between the insulating layers, and a first outer electrode and a second outer electrode each of which is provided on an outer surface of the element body and each of which is electrically connected to the coil. When viewed in cross section in a lamination direction in which the plurality of insulating layers are laminated together, end surfaces of the coil conductor layers, the end surfaces facing outward of the element body, are substantially straight in the lamination direction, and end surfaces of the coil conductor layers, the end surfaces facing inward of the element body, are inclined or bent with respect to the lamination direction.
    Type: Application
    Filed: August 12, 2019
    Publication date: March 5, 2020
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Tomoyuki WADA, Kiyoyasu SAKURADA, Yoshiyuki OOTA, Kouki OKAMURA
  • Patent number: 9779876
    Abstract: A ceramic body is prepared that includes an inner electrode disposed inside the ceramic body and in which an end portion of the inner electrode is led to a surface of the ceramic body. An electrode layer is formed on the surface of the ceramic body so as to cover the end portion of the inner electrode, the electrode layer containing a resin, a first metal filler that contains a first metal component, and a second metal filler that contains a second metal component having a higher melting point than the first metal component. A heating step of heating the electrode layer is performed to form an electrode including a metal layer that is located on the surface of the ceramic body and that contains the first and second metal components and a metal contained in the inner electrode.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: October 3, 2017
    Assignee: Murata Manufactruing Co., Ltd.
    Inventors: Kota Zenzai, Hisayoshi Omori, Takashi Kanayama, Kiyoyasu Sakurada, Naoki Shimizu, Seiji Katsuta, Shinji Otani
  • Publication number: 20170011853
    Abstract: A ceramic electronic component includes a ceramic body, an inner electrode, an outer electrode, and a connecting portion. The inner electrode is disposed inside the ceramic body. The end portion of the inner electrode extends to a surface of the ceramic body. The outer electrode is disposed on the surface of the ceramic body so as to cover the end portion of the inner electrode. The outer electrode includes a resin and a metal. The connecting portion is disposed so as to extend from an inside of the outer electrode to an inside of the ceramic body. In a portion of the surface of the ceramic body on which the outer electrode is disposed, the length of the connecting portion that extends in a direction in which the inner electrode is extends about 2.4 ?m or more.
    Type: Application
    Filed: September 22, 2016
    Publication date: January 12, 2017
    Inventors: Kota ZENZAI, Hisayoshi OMORI, Takashi KANAYAMA, Kiyoyasu SAKURADA, Naoki SHIMIZU, Seiji KATSUTA, Shinji OTANI
  • Patent number: 9490055
    Abstract: A ceramic electronic component includes a ceramic body, an inner electrode, an outer electrode, and a connecting portion. The inner electrode is disposed inside the ceramic body. The end portion of the inner electrode extends to a surface of the ceramic body. The outer electrode is disposed on the surface of the ceramic body so as to cover the end portion of the inner electrode. The outer electrode includes a resin and a metal. The connecting portion is disposed so as to extend from an inside of the outer electrode to an inside of the ceramic body. In a portion of the surface of the ceramic body on which the outer electrode is disposed, the length of the connecting portion that extends in a direction in which the inner electrode is extends about 2.4 ?m or more.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: November 8, 2016
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Kota Zenzai, Hisayoshi Omori, Takashi Kanayama, Kiyoyasu Sakurada, Naoki Shimizu, Seiji Katsuta, Shinji Otani
  • Publication number: 20160042871
    Abstract: A ceramic body is prepared that includes an inner electrode disposed inside the ceramic body and in which an end portion of the inner electrode is led to a surface of the ceramic body. An electrode layer is formed on the surface of the ceramic body so as to cover the end portion of the inner electrode, the electrode layer containing a resin, a first metal filler that contains a first metal component, and a second metal filler that contains a second metal component having a higher melting point than the first metal component. A heating step of heating the electrode layer is performed to form an electrode including a metal layer that is located on the surface of the ceramic body and that contains the first and second metal components and a metal contained in the inner electrode.
    Type: Application
    Filed: October 26, 2015
    Publication date: February 11, 2016
    Inventors: Kota ZENZAI, Hisayoshi OMORI, Takashi KANAYAMA, Kiyoyasu SAKURADA, Naoki SHIMIZU, Seiji KATSUTA, Shinji OTANI
  • Patent number: 9202640
    Abstract: A ceramic body includes an inner electrode disposed inside the ceramic body and in which an end portion of the inner electrode extends to a surface of the ceramic body. An electrode layer is formed on the surface of the ceramic body so as to cover the end portion of the inner electrode, the electrode layer including a resin, a first metal filler that contains a first metal component, and a second metal filler that contains a second metal component having a higher melting point than the first metal component. A step of heating the electrode layer is performed to form an electrode including a metal layer that is located on the surface of the ceramic body and that includes the first and second metal components and a metal contained in the inner electrode.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: December 1, 2015
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Kota Zenzai, Hisayoshi Omori, Takashi Kanayama, Kiyoyasu Sakurada, Naoki Shimizu, Seiji Katsuta, Shinji Otani
  • Patent number: 9013859
    Abstract: A method for manufacturing a laminated electronic component in which, when first plating layers that respectively connect a plurality of internal electrodes to each other and second plating layers that improves the mountability of a laminated electronic component are formed as external terminal electrodes, the entire component main body is treated with a water repellent agent after the formation of the first plating layers, and the water repellent agent on the first plating layers is then removed before the formation of the second plating layers. The gaps between the end edges of the first plating films on the outer surface of the component main body and the outer surface of the component main body are filled with the water repellent agent.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: April 21, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masahito Saruban, Makoto Ogawa, Akihiro Motoki, Syunsuke Takeuchi, Kiyoyasu Sakurada
  • Patent number: 8988855
    Abstract: A ceramic electronic component includes a ceramic body and an outer electrode. The outer electrode is disposed on the ceramic body. The outer electrode includes a first conductive layer and a second conductive layer. The first conductive layer includes a resin, a first metal component, and a second metal component having a higher melting point than the first metal component. The second conductive layer is disposed on the first conductive layer. The second conductive layer is includes a plating film. An alloy particle containing the first metal component and the second metal component protrudes to the second conductive layer side from a surface of the first conductive layer.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: March 24, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Kiyoyasu Sakurada, Kota Zenzai, Hisayoshi Omori, Takashi Kanayama, Shinji Otani, Naoki Shimizu, Seiji Katsuta
  • Patent number: 8687345
    Abstract: A chip-type electronic component with high reliability, which is able to suppress and prevent fatal damage to a ceramic body due to cracking even if a substrate with the chip-type electronic component mounted thereon undergoes a deflection. The chip-type electronic component includes a ceramic body having internal electrodes; resin electrode layers formed in a region including at least end surfaces of the ceramic body, and connected to the internal electrodes directly or indirectly and connected with the ceramic body; and plating metal layers covering the resin electrode layers, wherein the adhesion strength between the ceramic body and the resin electrode layer is higher than the adhesion strength between the resin electrode layer and the plating metal layer.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: April 1, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Katsuaki Higashi, Koji Matsushita, Kiyoyasu Sakurada
  • Patent number: 8553391
    Abstract: In an electronic component, a laminate includes a plurality of laminated ceramic layers and a mounting surface defined by outer edges of the plurality of laminated ceramic layers, the outer edges being continuously located adjacent to each other. Capacitor conductors are disposed on the ceramic layers and include exposed portions that are exposed at the mounting surface between the ceramic layers. An electroconductive layer defining an external electrode is arranged to directly cover the exposed portions and is formed by plating so as to be made of plated material. Another electroconductive layer covers the above-mentioned electroconductive layer and partially covers surfaces of the laminate, and it is made of a material including metal and one of glass and resin.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: October 8, 2013
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Syunsuke Takeuchi, Kiyoyasu Sakurada
  • Publication number: 20130106560
    Abstract: A ceramic electronic component includes a ceramic body, an inner electrode, an outer electrode, and a connecting portion. The inner electrode is disposed inside the ceramic body. The end portion of the inner electrode extends to a surface of the ceramic body. The outer electrode is disposed on the surface of the ceramic body so as to cover the end portion of the inner electrode. The outer electrode includes a resin and a metal. The connecting portion is disposed so as to extend from an inside of the outer electrode to an inside of the ceramic body. In a portion of the surface of the ceramic body on which the outer electrode is disposed, the length of the connecting portion that extends in a direction in which the inner electrode is extends about 2.4 ?m or more.
    Type: Application
    Filed: November 2, 2011
    Publication date: May 2, 2013
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Kota ZENZAI, Hisayoshi OMORI, Takashi KANAYAMA, Kiyoyasu SAKURADA, Naoki SHIMIZU, Seiji KATSUTA, Shinji OTANI
  • Publication number: 20130107420
    Abstract: A ceramic electronic component includes a ceramic body and an outer electrode. The outer electrode is disposed on the ceramic body. The outer electrode includes a first conductive layer and a second conductive layer. The first conductive layer includes a resin, a first metal component, and a second metal component having a higher melting point than the first metal component. The second conductive layer is disposed on the first conductive layer. The second conductive layer is includes a plating film. An alloy particle containing the first metal component and the second metal component protrudes to the second conductive layer side from a surface of the first conductive layer.
    Type: Application
    Filed: November 2, 2011
    Publication date: May 2, 2013
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Kiyoyasu SAKURADA, Kota ZENZAI, Hisayoshi OMORI, Takashi KANAYAMA, Shinji OTANI, Naoki SHIMIZU, Seiji KATSUTA
  • Publication number: 20130107421
    Abstract: A ceramic body includes an inner electrode disposed inside the ceramic body and in which an end portion of the inner electrode extends to a surface of the ceramic body. An electrode layer is formed on the surface of the ceramic body so as to cover the end portion of the inner electrode, the electrode layer including a resin, a first metal filler that contains a first metal component, and a second metal filler that contains a second metal component having a higher melting point than the first metal component. A step of heating the electrode layer is performed to form an electrode including a metal layer that is located on the surface of the ceramic body and that includes the first and second metal components and a metal contained in the inner electrode.
    Type: Application
    Filed: November 2, 2011
    Publication date: May 2, 2013
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Kota ZENZAI, Hisayoshi OMORI, Takashi KANAYAMA, Kiyoyasu SAKURADA, Naoki SHIMIZU, Seiji KATSUTA, Shinji OTANI
  • Patent number: 8411409
    Abstract: When an external terminal electrode of a ceramic electronic component such as a laminated ceramic capacitor is formed by plating, plating growth may be also caused even in an undesired location. The ceramic surface provided by a component main body is configured to include a high plating growth region of, for example, a barium titanate based ceramic, which exhibits relatively high plating growth, and a low plating growth region of, for example, a calcium zirconate based ceramic, which exhibits relatively low plating growth. The plating film constituting a first layer to define a base for an external terminal electrode is formed in such a way that the growth of a plated deposit deposited with conductive surfaces provided by exposed ends of internal electrodes as starting points is limited so as not to cross over a boundary between the high plating growth region and the low plating growth region toward the low plating growth region.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: April 2, 2013
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Makoto Ogawa, Akihiro Motoki, Masahito Saruban, Toshiyuki Iwanaga, Syunsuke Takeuchi, Kiyoyasu Sakurada
  • Publication number: 20120069489
    Abstract: In an electronic component, a laminate includes a plurality of laminated ceramic layers and a mounting surface defined by outer edges of the plurality of laminated ceramic layers, the outer edges being continuously located adjacent to each other. Capacitor conductors are disposed on the ceramic layers and include exposed portions that are exposed at the mounting surface between the ceramic layers. An electroconductive layer defining an external electrode is arranged to directly cover the exposed portions and is formed by plating so as to be made of plated material. Another electroconductive layer covers the above-mentioned electroconductive layer and partially covers surfaces of the laminate, and it is made of a material including metal and one of glass and resin.
    Type: Application
    Filed: September 15, 2011
    Publication date: March 22, 2012
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Syunsuke TAKEUCHI, Kiyoyasu SAKURADA
  • Publication number: 20110309718
    Abstract: When an external terminal electrode of a ceramic electronic component such as a laminated ceramic capacitor is formed by plating, plating growth may be also caused even in an undesired location. The ceramic surface provided by a component main body is configured to include a high plating growth region of, for example, a barium titanate based ceramic, which exhibits relatively high plating growth, and a low plating growth region of, for example, a calcium zirconate based ceramic, which exhibits relatively low plating growth. The plating film constituting a first layer to define a base for an external terminal electrode is formed in such a way that the growth of a plated deposit deposited with conductive surfaces provided by exposed ends of internal electrodes as starting points is limited so as not to cross over a boundary between the high plating growth region and the low plating growth region toward the low plating growth region.
    Type: Application
    Filed: June 16, 2011
    Publication date: December 22, 2011
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Makoto OGAWA, Akihiro MOTOKI, Masahito SARUBAN, Toshiyuki IWANAGA, Syunsuke TAKEUCHI, Kiyoyasu SAKURADA
  • Publication number: 20110299221
    Abstract: A chip-type electronic component with high reliability, which is able to suppress and prevent fatal damage to a ceramic body due to cracking even if a substrate with the chip-type electronic component mounted thereon undergoes a deflection. The chip-type electronic component includes a ceramic body having internal electrodes; resin electrode layers formed in a region including at least end surfaces of the ceramic body, and connected to the internal electrodes directly or indirectly and connected with the ceramic body; and plating metal layers covering the resin electrode layers, wherein the adhesion strength between the ceramic body and the resin electrode layer is higher than the adhesion strength between the resin electrode layer and the plating metal layer.
    Type: Application
    Filed: June 1, 2011
    Publication date: December 8, 2011
    Inventors: Katsuaki Higashi, Koji Matsushita, Kiyoyasu Sakurada
  • Patent number: 8053073
    Abstract: A process for producing resin-coated metal particles includes coating surfaces of metal particles with silica; allowing a polymerizable group to adsorb onto the surfaces of the silica-coated particles by the use of a silane coupling agent; and coating the surfaces of the silica-coated particles with a polymeric resin by mixing the particles to which the polymerizable groups have been adsorbed, a polymerizable monomer, a polymerization initiator, and a dispersant to polymerize the polymerizable monomer and the polymerizable groups.
    Type: Grant
    Filed: September 15, 2004
    Date of Patent: November 8, 2011
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Kiyoko Ueda, Ichiro Nakamura, Kiyoyasu Sakurada
  • Publication number: 20110193448
    Abstract: A method for manufacturing a laminated electronic component in which, when first plating layers that respectively connect a plurality of internal electrodes to each other and second plating layers that improves the mountability of a laminated electronic component are formed as external terminal electrodes, the entire component main body is treated with a water repellent agent after the formation of the first plating layers, and the water repellent agent on the first plating layers is then removed before the formation of the second plating layers. The gaps between the end edges of the first plating films on the outer surface of the component main body and the outer surface of the component main body are filled with the water repellent agent.
    Type: Application
    Filed: February 4, 2011
    Publication date: August 11, 2011
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Masahito SARUBAN, Makoto OGAWA, Akihiro MOTOKI, Syunsuke TAKEUCHI, Kiyoyasu SAKURADA