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Patent Agency Ranking
公开(公告)号：US10600579B2
公开(公告)日：2020-03-24
申请号：US15701557
申请日：2017-09-12
Inventor： Youichirou Uka , Katsuya Miyahara , Hiroshi Kojima
Abstract: An electrolytic capacitor includes an anode body, a first conductive polymer layer, and a second conductive polymer layer. The anode body includes a dielectric layer. The first conductive polymer layer covers at least a part of the dielectric layer. The second conductive polymer layer covers at least a part of the first conductive polymer layer. The first conductive polymer layer includes a first conductive polymer. The second conductive polymer layer includes a second conductive polymer. At least one of the first conductive polymer layer and the second conductive polymer layer further includes a hydroxy compound. The hydroxy compound has two or more alcoholic hydroxy groups or two or more phenolic hydroxy groups, and has a melting point ranging from 40° C. to 150° C., inclusive.
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公开(公告)号：US10685787B2
公开(公告)日：2020-06-16
申请号：US15702655
申请日：2017-09-12
Inventor： Youichirou Uka , Katsuya Miyahara , Hiroshi Kojima
Abstract: An electrolytic capacitor includes an anode body, a dielectric layer formed on the anode body, and a conductive polymer layer covering at least a part of the dielectric layer. The conductive polymer layer includes a conductive polymer and a polymer dopant. The polymer dopant includes a copolymer that includes a first monomer unit and a second monomer unit. The first monomer unit has a sulfonate group. Time second monomer unit has a functional group represented by a formula (i); —CO—R1—COOH (where R1 represents an aliphatic hydrocarbon group having 1 to 8 carbon atoms, an aromatic group, or a divalent group —OR2—, R2 representing an aliphatic hydrocarbon group having 1 to 8 carbon atoms or an aromatic group).
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公开(公告)号：US10388463B2
公开(公告)日：2019-08-20
申请号：US15812348
申请日：2017-11-14
Inventor： Youichirou Uka , Katsuya Miyahara , Hiroshi Kojima
IPC: H01G9/028 , H01G9/15 , C08K3/04 , C08L33/14 , C08G73/02 , H01G9/00 , H01G9/042 , H01G9/048 , H01G9/04
Abstract: An electrolytic capacitor includes an anode body, a dielectric layer formed on the anode body, and a conductive polymer layer covering at least a part of the dielectric layer. The conductive polymer layer includes a conductive polymer and a polymer dopant. The polymer dopant includes a first copolymer including: (A) a first unit derived from a first monomer having a sulfonate group; (B) a second unit derived from a second monomer having a carboxy group; and (C) a third unit derived from a third monomer having a hydroxy group.
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公开(公告)号：US10325728B2
公开(公告)日：2019-06-18
申请号：US15790153
申请日：2017-10-23
Inventor： Youichirou Uka , Katsuya Miyahara , Hiroshi Kojima
Abstract: An electrolytic capacitor includes an anode body having a dielectric layer, a first conductive polymer layer covering at least a part of the dielectric layer, and a second conductive polymer layer covering at least a part of the first conductive polymer layer. The first conductive polymer layer includes a first conductive polymer and a first polymer dopant having a sulfonate group. The second conductive polymer layer includes a second conductive polymer and a second polymer dopant having a sulfonate group. A polymerization degree of the first conductive polymer is lower than a polymerization degree of the second conductive polymer.
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公开(公告)号：US10304634B2
公开(公告)日：2019-05-28
申请号：US15790145
申请日：2017-10-23
Inventor： Youichirou Uka , Katsuya Miyahara , Hiroshi Kojima
Abstract: An electrolytic capacitor includes an anode body, a dielectric layer formed on the anode body, a first conductive polymer layer covering at least a part of the dielectric layer, and a second conductive polymer layer covering at least a part of the first conductive polymer layer. The first conductive polymer layer includes a first conductive polymer. The second conductive polymer layer includes a second conductive polymer. The first conductive polymer layer and the second conductive polymer layer each further include a first polymer dopant having a sulfonation degree of S1. At least one of the first conductive polymer layer and the second conductive polymer layer further includes a second polymer dopant having a sulfonation degree of S2. The sulfonation degree of S1 and the sulfonation degree of S2 satisfy a relation of S1
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