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公开(公告)号：US10563318B2
公开(公告)日：2020-02-18
申请号：US15724303
申请日：2017-10-04
Inventor： Yuichiro Tsubaki , Tatsuji Aoyama , Kazuyo Saito
IPC: C25D11/12 , H01G9/022 , C25D11/08 , H01G9/00 , H01G9/028 , H01G9/032 , H01G9/035 , H01G9/04 , H01G9/055 , H01G9/07 , H01G9/15
Abstract: An electrolytic capacitor includes an anode body having a dielectric layer; a solid electrolyte layer in contact with the dielectric layer of the anode body; and an electrolyte solution. The solid electrolyte layer includes a π-conjugated conductive polymer. The electrolyte solution contains a solvent and a solute, and the solvent contains a glycol compound and a sulfone compound. A proportion of the glycol compound contained in the solvent is 10% by mass or more. A proportion of the sulfone compound contained in the solvent is 30% by mass or more. A total proportion of the glycol compound and the sulfone compound contained in the solvent is 70% by mass or more.
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公开(公告)号：US10535472B2
公开(公告)日：2020-01-14
申请号：US15915109
申请日：2018-03-08
Inventor： Yuichiro Tsubaki , Tatsuji Aoyama
Abstract: An electrolytic capacitor includes an anode body having a dielectric layer; a solid electrolyte layer in contact with the dielectric layer of the anode body; and an electrolytic solution. The electrolytic solution contains a solvent and a solute. The solvent contains a glycol compound. The solute contains an acid component and a base component. A mass of the acid component in the solute is greater than a mass of the base component in the solute. The acid component contains a first aromatic compound having a hydroxyl group.
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公开(公告)号：US10431390B2
公开(公告)日：2019-10-01
申请号：US15702643
申请日：2017-09-12
Inventor： Yuichiro Tsubaki , Tatsuji Aoyama
Abstract: An electrolytic capacitor includes an anode body having a dielectric layer on a surface of the anode body, a cathode body, and an electrolytic solution interposed between the anode body and the cathode body. The electrolytic solution contains a first ester compound and a second ester compound. The first ester compound is a condensate of boric acid and a sugar alcohol. The second ester compound contains at least one condensate selected from the group consisting of a condensate of boric acid and a monool compound and a condensate of boric acid and a polyol compound excluding a sugar alcohol.
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公开(公告)号：US10373763B2
公开(公告)日：2019-08-06
申请号：US15872948
申请日：2018-01-16
Inventor： Yuichiro Tsubaki , Tatsuji Aoyama
IPC: H01G9/035 , H01G9/022 , H01G11/54 , H01G11/58 , H01G11/62 , H01G9/028 , H01G9/008 , H01G9/025 , H01G9/07 , H01G9/145 , C08K5/053 , C08K5/092 , C08L71/02 , H01G9/00 , C08G61/12 , H01G9/15 , C09D165/00
Abstract: An electrolytic capacitor includes: an anode body having a dielectric layer; a solid electrolyte layer in contact with the dielectric layer; and an electrolytic solution. The electrolytic solution contains a solvent and a solute. The solvent contains a glycol compound. The solute contains a carboxylic acid component and a base component. A ratio of the carboxylic acid component in the solute is 200 parts by mass or more with respect to 100 parts by mass of the base component.
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公开(公告)号：US10354806B2
公开(公告)日：2019-07-16
申请号：US15597178
申请日：2017-05-17
Inventor： Yuichiro Tsubaki
Abstract: An electrolytic capacitor includes an anode body having a dielectric layer, and a solid electrolyte layer including a conductive polymer. The solid electrolyte layer includes the conductive polymer, an anion, and a cation. The anion is an anion corresponding to at least one acid selected from the group consisting of a phosphorus-containing oxoacid, sulfuric acid, and a carboxylic acid. The cation is a nitrogen-containing cation.
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Patent Agency Ranking
公开(公告)号：US12293880B2
公开(公告)日：2025-05-06
申请号：US18045654
申请日：2022-10-11
Inventor： Yuichiro Tsubaki , Tatsuji Aoyama
Abstract: An electrolytic capacitor includes an anode body having a dielectric layer; a solid electrolyte layer in contact with the dielectric layer of the anode body; and an electrolytic solution. The electrolytic solution contains a solvent and a solute. The solvent contains a glycol compound. The solute contains an acid component and a base component. A mass of the acid component in the solute is greater than a mass of the base component in the solute. The acid component contains a first aromatic compound having a hydroxyl group.
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27.发明授权公开(公告)号：US12243693B2
公开(公告)日：2025-03-04
申请号：US17810619
申请日：2022-07-04
Inventor： Kazuyo Saito , Yuichiro Tsubaki , Tatsuji Aoyama
Abstract: An electrolytic capacitor includes a capacitor element and a liquid component. The capacitor element includes an anode body that includes a dielectric layer on a surface of the anode body and a conductive polymer that covers a part of the dielectric layer. The liquid component includes a sugar alcohol component and a polyalkylene glycol component. The sugar alcohol component contains at least one selected from the group consisting of a sugar alcohol having four or more hydroxy groups and a derivative of the sugar alcohol.
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公开(公告)号：US12112899B2
公开(公告)日：2024-10-08
申请号：US18208788
申请日：2023-06-12
Inventor： Kazuyo Saito , Yuichiro Tsubaki , Tatsuji Aoyama
Abstract: An electrolytic capacitor includes a capacitor element and electrolytic solution. The capacitor element includes an anode body with an oxide film, and a solid electrolyte contacting the oxide film. The electrolytic solution contains a solvent and a solute. The solvent contains at least one selected from the group consisting of a lactone compound, a glycol compound, and a sulfone compound. The solute includes a first acid component and a base component. The first acid component includes at least one of a benzenedicarboxylic acid and a derivative of the benzenedicarboxylic acid. The base component includes at least one of an amine and an amidine. A concentration of the solute in the electrolytic solution ranges from 15% by mass to 40% by mass, inclusive. A ratio (V/Vw) of a formation voltage V of the oxide film to a rated voltage Vw of the electrolytic capacitor is less than or equal to 1.7.
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公开(公告)号：US11776762B2
公开(公告)日：2023-10-03
申请号：US17953544
申请日：2022-09-27
Inventor： Miyoko Masuda , Yuichiro Tsubaki , Tatsuji Aoyama , Daisuke Kubo
Abstract: Disclosed is an electrolytic capacitor including: a capacitor element including a pair of electrodes; an electrolyte interposed between the pair of electrodes; a pair of leads electrically connected to the pair of electrodes, respectively; a case in which the capacitor element and the electrolyte are accommodated, and that has an opening; a sealing member that seals the opening, and has a pair of insertion holes for leading out the leads; an insulating plate having a pair of through holes for leading out the leads; and a resin member filled between the sealing member and the insulating plate, wherein the insulating plate has a resin bonding surface that abuts against the resin member, and a mounting surface opposed to the resin bonding surface, and includes at least one protrusion or recess on the resin bonding surface.
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公开(公告)号：US11756739B2
公开(公告)日：2023-09-12
申请号：US17688359
申请日：2022-03-07
Inventor： Yuichiro Tsubaki , Tatsuji Aoyama , Kazuyo Saito , Yuji Otsuka
Abstract: An electrolytic capacitor includes a capacitor element and an electrolytic solution. The capacitor element includes: an anode body including a dielectric layer; a cathode body; and a solid electrolyte in contact with the dielectric layer. The electrolytic solution includes a solvent, a solute, and a polymer component. The solvent includes an ethylene glycol compound. The polymer component includes polyalkylene glycol. The polyalkylene glycol includes at least one of (i) a mixture of polyoxyethylene and polyoxypropylene and (ii) an oxyethylene-oxypropylene copolymer. In the polyalkylene glycol, a molar ratio m/n of oxyethylene units to oxypropylene units is greater than 1.
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