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公开(公告)号：US12283435B2
公开(公告)日：2025-04-22
申请号：US18510053
申请日：2023-11-15
Inventor： Kei Hirota , Kyohei Iwaoka , Hitoshi Fukui , Daisuke Usa , Kouta Muneyasu , Hiroki Nagayama
Abstract: A solid electrolytic capacitor includes a capacitor element. The capacitor element includes an anode foil including a base material part and a porous part disposed on a surface of the base material part, a dielectric layer disposed on at least a part of a surface of the anode foil, a solid electrolyte layer covering at least a part of the dielectric layer, and a cathode lead-out layer covering at least a part of the solid electrolyte layer. The anode foil includes an anode section on which the solid electrolyte layer is not disposed, a cathode formation section on which the solid electrolyte layer is disposed, and a separation section located between the anode section and the cathode formation section. A first insulating material is disposed on a surface of the porous part in the separation section. And at least a part of a region of the porous part that is covered with the first insulating material includes a second insulating material.
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公开(公告)号：US11189430B2
公开(公告)日：2021-11-30
申请号：US16618134
申请日：2018-05-07
Inventor： Hitoshi Fukui , Hiroshi Kojima , Ai Makino
Abstract: An electrolytic capacitor includes an anode body, a dielectric layer disposed on the anode body, and a solid electrolyte layer disposed on the dielectric layer. The solid electrolyte layer includes a self-doped conductive polymer and an organic alkali.
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公开(公告)号：US11189429B2
公开(公告)日：2021-11-30
申请号：US15733097
申请日：2018-12-21
Inventor： Hitoshi Fukui , Ai Makino , Hiroshi Kojima
Abstract: A method for manufacturing an electrolytic capacitor includes: preparing an anode body that includes a dielectric layer, and forming a solid electrolyte layer on the dielectric layer. The forming of the solid electrolyte layer includes: forming a first conductive polymer layer on the dielectric layer, applying a first treatment liquid to the first conductive polymer layer, and forming a second conductive polymer layer after the applying of the first treatment liquid. The first conductive polymer layer includes a first conductive polymer. The first treatment liquid contains a first compound and a solvent. The first compound has a skeleton of naphthalene or anthraquinone, and includes at least one SO3-containing group bonded to the skeleton. The at least one SO3-containing group is at least one selected from a group consisting of a sulfonic acid group and a sulfonate group.
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公开(公告)号：US12283434B2
公开(公告)日：2025-04-22
申请号：US17923767
申请日：2021-04-30
Inventor： Takuya Kurimoto , Hitoshi Fukui
Abstract: A solid electrolytic capacitor element includes an anode body, a dielectric layer formed at the surface of the anode body, and a cathode portion that covers at least a part of the dielectric layer. The cathode portion includes a solid electrolyte layer that covers at least a part of the dielectric layer. The solid electrolyte included in the solid electrolyte layer has a weight reduction ratio of 3% or less when measured through thermogravimetric analysis in which the solid electrolyte is heated to 180° C., is kept at 180° C. for 20 minutes, is cooled from 180° C. to 30° C., and is then heated from 30° C. to 260° C. at a rate of 20° C./min.
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公开(公告)号：US11862406B2
公开(公告)日：2024-01-02
申请号：US17420703
申请日：2020-01-23
Inventor： Kei Hirota , Kyohei Iwaoka , Hitoshi Fukui , Daisuke Usa , Kouta Muneyasu , Hiroki Nagayama
Abstract: A solid electrolytic capacitor includes a capacitor element. The capacitor element includes an anode foil including a base material part and a porous part disposed on a surface of the base material part, a dielectric layer disposed on at least a part of a surface of the anode foil, a solid electrolyte layer covering at least a part of the dielectric layer, and a cathode lead-out layer covering at least a part of the solid electrolyte layer. The anode foil includes an anode section on which the solid electrolyte layer is not disposed, a cathode formation section on which the solid electrolyte layer is disposed, and a separation section located between the anode section and the cathode formation section. A first insulating material is disposed on a surface of the porous part in the separation section. And at least a part of a region of the porous part that is covered with the first insulating material includes a second insulating material.
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Patent Agency Ranking
公开(公告)号：US11387048B2
公开(公告)日：2022-07-12
申请号：US17089710
申请日：2020-11-04
Inventor： Takuya Nakayama , Natsuki Hatakeyama , Katsuhisa Ishizaki , Hitoshi Fukui
Abstract: A solid electrolytic capacitor includes at least one capacitor element, an outer packaging resin, and a coating layer. The at least one capacitor element includes an anode body that includes a dielectric layer, and a solid electrolyte layer that at least partially covers the dielectric layer. The outer packaging resin covers the at least one capacitor element. The coating layer is disposed between the at least one capacitor element and the outer packaging resin. The coating layer contains a fluorine compound.
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公开(公告)号：US20250079092A1
公开(公告)日：2025-03-06
申请号：US18724467
申请日：2022-10-24
Inventor： Masahiro Sato , Hitoshi Fukui
Abstract: A solid electrolytic capacitor includes a capacitor element and an exterior body that seals the capacitor element. The capacitor element includes an anode body, a dielectric layer that is formed on the surface of the anode body, a cathode part that covers at least a portion of the dielectric layer, an anode lead with one end portion electrically connected to the anode body, and a cathode lead with one end portion electrically connected to the cathode part. The other end portion of the anode lead and the other end portion of the cathode lead are drawn out from the exterior body. The cathode part includes a solid electrolyte layer that covers at least a portion of the dielectric layer. When the solid electrolytic capacitor is subjected to a processing corresponding to mounting reflow, the amount of gas generated is 1600 μL or less.
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公开(公告)号：US11769637B2
公开(公告)日：2023-09-26
申请号：US17416549
申请日：2020-01-17
Inventor： Hitoshi Fukui
Abstract: An electrolytic capacitor includes an anode body, a dielectric layer disposed on the anode body, and a solid electrolyte layer disposed on the dielectric layer. The solid electrolyte layer includes a first layer and a second layer disposed on the first layer. The first layer contains a first conductive polymer. And the second layer contains a second conductive polymer that is a self-doped conductive polymer.
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公开(公告)号：US10943743B2
公开(公告)日：2021-03-09
申请号：US16270309
申请日：2019-02-07
Inventor： Hitoshi Fukui , Shinya Suzuki , Koji Okamoto , Makoto Nagashima
Abstract: An electrolytic capacitor includes an anode body, a dielectric layer disposed on the anode body, a solid electrolyte layer disposed on the dielectric layer, and a cathode lead-out layer disposed on the solid electrolyte layer. The solid electrolyte layer contains a first conductive polymer having a thiophene skeleton and a second conductive polymer having an aniline skeleton. In the solid electrolyte layer, a mass ratio of the second conductive polymer with respect to a total mass of the first conductive polymer and the second conductive polymer in a region close to the dielectric layer is greater than a mass ratio of the second conductive polymer with respect to a total mass of the first conductive polymer and the second conductive polymer in a region close to the cathode lead-out layer.
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公开(公告)号：US12183518B2
公开(公告)日：2024-12-31
申请号：US18450206
申请日：2023-08-15
Inventor： Hitoshi Fukui
Abstract: An electrolytic capacitor includes an anode body, a dielectric layer disposed on the anode body, and a solid electrolyte layer disposed on the dielectric layer. The solid electrolyte layer includes a first layer and a second layer disposed on the first layer. The first layer contains a first conductive polymer. And the second layer contains a second conductive polymer that is a self-doped conductive polymer.
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