Patents by Inventor Takahisa FUKUDA
Takahisa FUKUDA 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).
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Patent number: 11915879Abstract: An electronic component includes an element body and at least one external electrode thereon. The element body has a dielectric and inner electrodes. Each external electrode includes a base layer connected to at least one the inner electrode. The base layer is formed on a plurality of surfaces of the element body and contains a metal and a first co-material mixed with the metal. Each external electrode also includes a plating layer formed on at least one face of the base layer. Each external electrode also includes an oxide layer formed on one or more faces of the base layer other than those faces of the base layer on which the plating layer is formed. The oxide layer has a surface layer made from an oxide film of the metal of the base layer and a second co-material.Type: GrantFiled: May 26, 2021Date of Patent: February 27, 2024Assignee: TAIYO YUDEN CO., LTD.Inventors: Anju Okada, Mina Amano, Kiyoshiro Yatagawa, Takahisa Fukuda
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Patent number: 11735372Abstract: A ceramic electronic device includes: a multilayer chip in which each of a plurality of dielectric layers and each of a plurality of internal electrode layers are alternately stacked, a main component of the dielectric layers being ceramic, the plurality of internal electrode layers being alternately exposed to a first end face and a second end face of the multilayer chip, the first end face facing with the second end face; a first external electrode provided on the first end face; and a second external electrode provided on the second end face, wherein a silane film is provided on a surface of the ceramic electronic device, and wherein an organic compound is provided on the silane film, and has a siloxane bonding.Type: GrantFiled: February 10, 2022Date of Patent: August 22, 2023Assignee: TAIYO YUDEN CO., LTD.Inventors: Kiyoshiro Yatagawa, Satoshi Kobayashi, Takahisa Fukuda
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Patent number: 11688559Abstract: A multilayer ceramic capacitor includes: a multilayer chip in which each of dielectric layers and each of internal electrode layers are stacked, the plurality of internal electrode layers being exposed to at least one of a first end face and a second end face of the multilayer structure, the first end face being opposite to the second end face, a first external electrode provided on the first end face; a second external electrode provided on the second end face; and a fluorine compound that is adhered to at least a part of a region including a surface of the multilayer chip where neither the first external electrode nor the second external electrode is formed and surfaces of the first external electrode and the second external electrode, fluorine compound being released at a temperature of 380 degrees C. or more.Type: GrantFiled: March 24, 2020Date of Patent: June 27, 2023Assignee: TAIYO YUDEN CO., LTD.Inventors: Kiyoshiro Yatagawa, Satoshi Kobayashi, Takahisa Fukuda
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Publication number: 20230114467Abstract: A multi-layer ceramic electronic component includes: a ceramic body having a substantially rectangular parallelepiped shape; and external electrodes each including a base layer, a conductive resin layer, and first and second conductive layers. A conductive filler includes a core portion and a silver coating film made of silver and covering the core portion. In a cross-section parallel to the first and second axes, when a straight line parallel to the first axis is drawn to pass through a range distant from a base end portion, and when a thickness of the first conductive layer along the line is a conductor thickness, and the sum of lengths of the silver coating film along the line in all the conductive fillers on the line is a total thickness of silver coating, a ratio of the conductor thickness to the total thickness of silver coating is 2 or more and 10 or less.Type: ApplicationFiled: August 2, 2022Publication date: April 13, 2023Applicant: TAIYO YUDEN CO., LTD.Inventors: Satoshi KOBAYASHI, Kiyoshiro YATAGAWA, Takahisa FUKUDA
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Patent number: 11626247Abstract: An electronic component includes an element body and external electrodes. The element body includes a dielectric and an internal electrode. Each of the external electrodes includes a base layer formed on multiple surfaces of the element body and an electrically-conducting material layer formed on the base layer, the base layer including a metal and co-material particles dispersed in the metal and being connected to the internal electrode. The co-material particles at an interface surface between the base layer and the electrically-conducting material layer have edges covered with the metal at the interface surface. The electrically-conducting material layer is in contact with the co-material particles at the interface surface and the metal covering the edges of the co-material particles at the interface surface.Type: GrantFiled: August 26, 2021Date of Patent: April 11, 2023Assignee: TAIYO YUDEN CO., LTD.Inventors: Junichi Shinozaki, Toshiki Kondo, Ryosuke Hoshino, Takahisa Fukuda
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Patent number: 11562861Abstract: A manufacturing method of a ceramic electronic device includes: preparing a ceramic electronic device having a multilayer chip, a first external electrode, and a second external electrode, and bonding an organic compound having a siloxane bonding to at least a part of a region including a surface of the multilayer chip where neither the first external electrode nor the second external electrode is formed and surfaces of the first external electrode and the second external electrode, by contacting heated silicon rubber to the region.Type: GrantFiled: February 10, 2022Date of Patent: January 24, 2023Assignee: TAIYO YUDEN CO., LTD.Inventors: Kiyoshiro Yatagawa, Satoshi Kobayashi, Takahisa Fukuda
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Patent number: 11557434Abstract: A ceramic electronic component includes external electrodes having conductive resin layers thereinside on respective two ends opposed to each other in a rectangular parallelepiped ceramic component body. Each of the external electrodes includes an underlying metal layer, an intermediate metal layer, a conductive resin layer, an external metal layer. A tip angle ? between an outer face of a tip portion of the wraparound portion of the underlying metal layer and a surface of the ceramic component body is 20° or smaller, and a tip angle ? between an outer face of a tip portion of the wraparound portion of the intermediate metal layer and a surface of the ceramic component body is 20° or smaller.Type: GrantFiled: December 9, 2020Date of Patent: January 17, 2023Assignee: TAIYO YUDEN CO., LTDInventors: Satoshi Kobayashi, Takahisa Fukuda, Tomoaki Nakamura, Mikio Tahara, Naoki Saito, Kiyoshiro Yatagawa
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Publication number: 20220328251Abstract: A ceramic electronic component includes an element body, a first external electrode, and a second external electrode. The element body includes a dielectric, at least one first internal electrode, and at least one second internal electrode laminated over the first internal electrode via the dielectric interposed therebetween. The element body has a top surface, a bottom surface, a pair of side surfaces, a first end surface, and a second end surface, thereby the element body having a generally cuboid shape. The first internal electrode is exposed on the first end surface. The second internal electrode is exposed on the second end surface. The side surfaces of the element body are concavely curved along a longitudinal direction, so that the element body has a longitudinal central part at which a width is less than a width at the end surface. The first external electrode is formed on the first end surface and electrically connected with the first internal electrode.Type: ApplicationFiled: March 25, 2022Publication date: October 13, 2022Applicant: TAIYO YUDEN CO., LTD.Inventors: Anju OKADA, Mina AMANO, Takahisa FUKUDA
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Patent number: 11417468Abstract: A ceramic electronic device includes: a multilayer chip in which each of a plurality of dielectric layers and each of a plurality of internal electrode layers are alternately stacked, the multilayer chip having a rectangular parallelepiped shape, the plurality of internal electrode layers being alternately exposed to a first end face and a second end face of the multilayer chip, the first end face facing with the second end face, a first external electrode provided on the first end face; a second external electrode provided on the second end face; and an organic compound that is adhered to at least a part of a region including a surface of the multilayer chip where neither the first external electrode nor the second external electrode is formed and surfaces of the first external electrode and the second external electrode, and has a siloxane bonding.Type: GrantFiled: January 8, 2020Date of Patent: August 16, 2022Assignee: TAIYO YUDEN CO., LTD.Inventors: Kiyoshiro Yatagawa, Satoshi Kobayashi, Takahisa Fukuda
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Publication number: 20220165505Abstract: A manufacturing method of a ceramic electronic device includes: preparing a ceramic electronic device having a multilayer chip, a first external electrode, and a second external electrode, and bonding an organic compound having a siloxane bonding to at least a part of a region including a surface of the multilayer chip where neither the first external electrode nor the second external electrode is formed and surfaces of the first external electrode and the second external electrode, by contacting heated silicon rubber to the region.Type: ApplicationFiled: February 10, 2022Publication date: May 26, 2022Inventors: Kiyoshiro YATAGAWA, Satoshi KOBAYASHI, Takahisa FUKUDA
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Publication number: 20220165506Abstract: A ceramic electronic device includes: a multilayer chip in which each of a plurality of dielectric layers and each of a plurality of internal electrode layers are alternately stacked, a main component of the dielectric layers being ceramic, the plurality of internal electrode layers being alternately exposed to a first end face and a second end face of the multilayer chip, the first end face facing with the second end face; a first external electrode provided on the first end face; and a second external electrode provided on the second end face, wherein a silane film is provided on a surface of the ceramic electronic device, and wherein an organic compound is provided on the silane film, and has a siloxane bonding.Type: ApplicationFiled: February 10, 2022Publication date: May 26, 2022Inventors: Kiyoshiro YATAGAWA, Satoshi KOBAYASHI, Takahisa FUKUDA
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Publication number: 20220068564Abstract: An electronic component includes an element body and external electrodes. The element body includes a dielectric and an internal electrode. Each of the external electrodes includes a base layer formed on multiple surfaces of the element body and an electrically-conducting material layer formed on the base layer, the base layer including a metal and co-material particles dispersed in the metal and being connected to the internal electrode. The co-material particles at an interface surface between the base layer and the electrically-conducting material layer have edges covered with the metal at the interface surface. The electrically-conducting material layer is in contact with the co-material particles at the interface surface and the metal covering the edges of the co-material particles at the interface surface.Type: ApplicationFiled: August 26, 2021Publication date: March 3, 2022Applicant: TAIYO YUDEN CO., LTD.Inventors: Junichi SHINOZAKI, Toshiki KONDO, Ryosuke HOSHINO, Takahisa FUKUDA
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Publication number: 20210375549Abstract: An electronic component includes an element body and at least one external electrode thereon. The element body has a dielectric and inner electrodes. Each external electrode includes a base layer connected to at least one the inner electrode. The base layer is formed on a plurality of surfaces of the element body and contains a metal and a first co-material mixed with the metal. Each external electrode also includes a plating layer formed on at least one face of the base layer. Each external electrode also includes an oxide layer formed on one or more faces of the base layer other than those faces of the base layer on which the plating layer is formed. The oxide layer has a surface layer made from an oxide film of the metal of the base layer and a second co-material.Type: ApplicationFiled: May 26, 2021Publication date: December 2, 2021Applicant: TAIYO YUDEN CO., LTD.Inventors: Anju OKADA, Mina AMANO, Kiyoshiro YATAGAWA, Takahisa FUKUDA
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Publication number: 20210175017Abstract: A ceramic electronic component includes external electrodes having conductive resin layers thereinside on respective two ends opposed to each other in a rectangular parallelepiped ceramic component body. Each of the external electrodes includes an underlying metal layer, an intermediate metal layer, a conductive resin layer, an external metal layer. A tip angle ? between an outer face of a tip portion of the wraparound portion of the underlying metal layer and a surface of the ceramic component body is 20° or smaller, and a tip angle ? between an outer face of a tip portion of the wraparound portion of the intermediate metal layer and a surface of the ceramic component body is 20° or smaller.Type: ApplicationFiled: December 9, 2020Publication date: June 10, 2021Inventors: SATOSHI KOBAYASHI, TAKAHISA FUKUDA, TOMOAKI NAKAMURA, MIKIO TAHARA, NAOKI SAITO, KIYOSHIRO YATAGAWA
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Patent number: 10998135Abstract: A ceramic electronic component includes external electrodes having conductive resin layers thereinside on respective two ends opposed to each other in a rectangular parallelepiped ceramic component body. Each of the external electrodes includes an underlying metal layer, an intermediate metal layer, a conductive resin layer, an external metal layer. A tip angle ? between an outer face of a tip portion of the wraparound portion of the underlying metal layer and a surface of the ceramic component body is 20° or smaller, and a tip angle ? between an outer face of a tip portion of the wraparound portion of the intermediate metal layer and a surface of the ceramic component body is 20° or smaller.Type: GrantFiled: May 17, 2019Date of Patent: May 4, 2021Assignee: Taiyo Yuden Co., LtdInventors: Satoshi Kobayashi, Takahisa Fukuda, Tomoaki Nakamura, Mikio Tahara, Naoki Saito, Kiyoshiro Yatagawa
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Publication number: 20200312571Abstract: A multilayer ceramic capacitor includes: a multilayer chip in which each of dielectric layers and each of internal electrode layers are stacked, the plurality of internal electrode layers being exposed to at least one of a first end face and a second end face of the multilayer structure, the first end face being opposite to the second end face, a first external electrode provided on the first end face; a second external electrode provided on the second end face; and a fluorine compound that is adhered to at least a part of a region including a surface of the multilayer chip where neither the first external electrode nor the second external electrode is formed and surfaces of the first external electrode and the second external electrode, fluorine compound being released at a temperature of 380 degrees C. or more.Type: ApplicationFiled: March 24, 2020Publication date: October 1, 2020Inventors: Kiyoshiro YATAGAWA, Satoshi KOBAYASHI, Takahisa FUKUDA
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Publication number: 20200234885Abstract: A ceramic electronic device includes: a multilayer chip in which each of a plurality of dielectric layers and each of a plurality of internal electrode layers are alternately stacked, the multilayer chip having a rectangular parallelepiped shape, the plurality of internal electrode layers being alternately exposed to a first end face and a second end face of the multilayer chip, the first end face facing with the second end face, a first external electrode provided on the first end face; a second external electrode provided on the second end face; and an organic compound that is adhered to at least a part of a region including a surface of the multilayer chip where neither the first external electrode nor the second external electrode is formed and surfaces of the first external electrode and the second external electrode, and has a siloxane bonding.Type: ApplicationFiled: January 8, 2020Publication date: July 23, 2020Inventors: Kiyoshiro YATAGAWA, Satoshi KOBAYASHI, Takahisa FUKUDA
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Patent number: 10647602Abstract: A configuration for water purification undergoes the water supply step of taking in treatment water through a water suction port and pressure-feeding the treatment water, the air supply step of taking in air through an air suction port and supplying the air, the oxygen amount increasing step of pressurizing the air supplied at the air supply step to increase the total amount of oxygen, the ionization step of ionizing the pressurized air subjected to the oxygen amount increasing step, the mixing step of obtaining gas-liquid mixing fluid subjected to first fine air bubble formation by spraying the air into the flow of treatment water, and the accelerated spraying step of performing second fine air bubble formation by accelerating a flow velocity by a narrowed-diameter portion provided at a spray nozzle when the gas-liquid mixing fluid obtained through the mixing step is sprayed into the treatment water.Type: GrantFiled: October 7, 2015Date of Patent: May 12, 2020Assignees: Kunio FUKUDA, Takahisa FUKUDAInventors: Kunio Fukuda, Takahisa Fukuda
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Patent number: 10622151Abstract: In an exemplary embodiment, a multilayer ceramic capacitor has, at two opposing respective end parts of a capacitor body 11 of roughly rectangular solid shape, external electrodes 12 that each have a conductive resin layer F3 inside. Each of the external electrodes 12 continuously has an end face part 12a corresponding to one face, and a wraparound part 12b corresponding to four faces surrounding the one face, of the capacitor body 11. Also, the end face part 12a of each of the external electrodes 12 has a bulging part 12a1 on the outer face of the end face part 12a. An electronic component using the multilayer ceramic capacitor can maximally prevent the Manhattan phenomenon that may otherwise occur when the electronic component is mounted on a circuit board, even though its external electrodes have the conductive resin layer inside.Type: GrantFiled: November 7, 2018Date of Patent: April 14, 2020Assignee: TAIYO YUDEN CO., LTD.Inventors: Satoshi Kobayashi, Takahisa Fukuda, Tomoaki Nakamura, Mikio Tahara
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Publication number: 20190362895Abstract: A ceramic electronic component includes external electrodes having conductive resin layers thereinside on respective two ends opposed to each other in a rectangular parallelepiped ceramic component body. Each of the external electrodes includes an underlying metal layer, an intermediate metal layer, a conductive resin layer, an external metal layer. A tip angle ? between an outer face of a tip portion of the wraparound portion of the underlying metal layer and a surface of the ceramic component body is 20° or smaller, and a tip angle ? between an outer face of a tip portion of the wraparound portion of the intermediate metal layer and a surface of the ceramic component body is 20° or smaller.Type: ApplicationFiled: May 17, 2019Publication date: November 28, 2019Inventors: SATOSHI KOBAYASHI, TAKAHISA FUKUDA, TOMOAKI NAKAMURA, MIKIO TAHARA, NAOKI SAITO, KIYOSHIRO YATAGAWA