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1.发明授权公开(公告)号：US12080489B2
公开(公告)日：2024-09-03
申请号：US17434263
申请日：2019-10-30
Inventor： Mitsuhisa Yoshimura , Shosuke Nakano , Hiroshi Yoshida , Masami Tsubaki , Naomi Kurihara , Miwa Ogawa
CPC classification number: H01G9/055 , H01G9/0032 , H01G9/145
Abstract: An electrode foil for an electrolytic capacitor including a metal porous portion, and a metal core portion continuous to the metal porous portion. When the metal porous portion is equally divided in three in a thickness direction of the metal porous portion into a first region, a second region, and a third region sequentially from the metal core portion side, the first region has a porosity P1, the second region has a porosity P2, and the third region has a porosity P3, satisfying P1
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公开(公告)号：US12112900B2
公开(公告)日：2024-10-08
申请号：US17811265
申请日：2022-07-07
Inventor： Yuichiro Tsubaki , Kazuhiro Takatani , Mitsuhisa Yoshimura , Miyoko Masuda
Abstract: An electrolytic capacitor includes a capacitor element, a liquid component, a case housing the capacitor element and the liquid component, and a sealing member sealing the case. the capacitor element includes a porous sintered body including a dielectric layer, a cathode foil facing at least a part of the porous sintered body, and a conductive polymer covering at least a part of a surface of the dielectric layer. The conductive polymer is in contact with the cathode foil. And a void in the capacitor element is impregnated with the liquid component.
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公开(公告)号：US12112896B2
公开(公告)日：2024-10-08
申请号：US17426039
申请日：2020-02-19
Inventor： Naomi Kurihara , Akihiro Yamaguchi , Mitsuhisa Yoshimura , Miwa Ogawa
CPC classification number: H01G9/0032 , C23C16/0209 , C23C16/40 , H01G13/006 , H01G9/055
Abstract: A film production method for producing a layer containing a metal oxide, the film production method including: a heating step of heating a metal foil containing a first metal by bringing a part of the metal foil into contact with at least one heat generator; a first contact step of letting first gas containing a second metal to be in contact with both surfaces of the metal foil in a state where the part of the metal foil is supported; and a second contact step of letting second gas containing an oxidant to be in contact with the both surfaces of the metal foil in a state where the part of the metal foil is supported.
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Patent Agency Ranking
公开(公告)号：US12014884B2
公开(公告)日：2024-06-18
申请号：US16984800
申请日：2020-08-04
Inventor： Mitsuhisa Yoshimura , Tatsuji Aoyama , Naomi Kurihara , Miwa Ogawa
CPC classification number: H01G9/048 , H01G9/0032 , H01G9/02 , H01G9/07
Abstract: An electrode foil for an electrolytic capacitor includes an anode electrode body including a base material part having a porous body portion, and a dielectric layer disposed on a surface of the porous body portion. The anode electrode body has a first main surface in which pores of the porous body portion are opened, a second main surface opposite to the first main surface, and an end surface connecting the first main surface and the second main surface. In the porous body portion, a first film thickness of the dielectric layer in an end surface vicinity region is larger than a second film thickness of the dielectric layer in a deep inner region, the end surface vicinity region being a region within a predetermined distance from the end surface, the deep inner region being a region located away from the first main surface and at a central portion in a direction parallel to the first main surface.
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公开(公告)号：US10607787B2
公开(公告)日：2020-03-31
申请号：US15981704
申请日：2018-05-16
Inventor： Kyohei Kobayashi , Yukiyasu Sugihara , Hiroshi Yoshida , Mitsuhisa Yoshimura , Hiromi Nakanishi
Abstract: A method for producing an electrode foil includes: a first step of preparing a metal foil, the metal foil having a strip shape; a second step of disposing a masking member so as to cover part of a principal surface of the metal foil; and a third step of partially etching the principal surface of the metal foil by applying current between the metal foil and an electrode while the metal foil faces the electrode via the masking member in etching liquid after the second step. The masking member has a strip shape. In the second step, the masking member is disposed along a longitudinal direction of the metal foil so as to be separated from both side edges of the metal foil.
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公开(公告)号：US10655241B2
公开(公告)日：2020-05-19
申请号：US15980132
申请日：2018-05-15
Inventor： Kyohei Kobayashi , Yukiyasu Sugihara , Hiroshi Yoshida , Mitsuhisa Yoshimura , Hiromi Nakanishi
Abstract: A method for producing an electrode foil includes an electrolytic etching step of etching a metal foil containing first metal by applying current between the metal foil and an electrode in etching liquid while a principal surface of the metal foil faces the electrode. A masking member is disposed between the principal surface of the metal foil and the electrode so as to cover a partial region of the principal surface. The masking member is an electric conductor. The masking member is electrically connected with the metal foil.
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7.发明授权公开(公告)号：US12080490B2
公开(公告)日：2024-09-03
申请号：US17396767
申请日：2021-08-09
Inventor： Mitsuhisa Yoshimura , Naomi Kurihara , Miwa Ogawa , Yasuhiro Tsuda
Abstract: An electrode foil for an electrolytic capacitor includes a metal foil having a porous part, and a dielectric layer covering a surface of a metal framework constituting the porous part. The dielectric layer includes a first layer containing an oxide of a second metal different from a first metal contained in the metal framework. The first layer has a thickness T1. The first layer contains at least one kind of additive element selected from the group consisting of carbon, phosphorus, boron, and nitrogen. The first layer includes a first region from an outer surface of the first layer to a center of the first layer in a thickness direction, and a second region from the center to an inner surface of the first layer. A content of the at least one kind of additive element in the first region is greater than a content of the at least one kind of additive element in the second region.
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8.发明授权公开(公告)号：US11848163B2
公开(公告)日：2023-12-19
申请号：US17396635
申请日：2021-08-06
Inventor： Miwa Ogawa , Naomi Kurihara , Mitsuhisa Yoshimura
CPC classification number: H01G9/045 , H01G9/0032 , H01G9/055 , H01G9/07 , H01G9/15
Abstract: An electrode foil for an electrolytic capacitor includes an anode body foil having a porous part, and a dielectric layer covering a surface of a metal framework constituting the porous part. The dielectric layer includes a first layer containing an oxide of a second metal, the second metal being different from a first metal contained in the metal framework. An underlayer that is continuous with the first layer is provided between the metal framework and the first layer. The underlayer contains phosphorus and carbon.
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