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公开(公告)号：US20230360864A1
公开(公告)日：2023-11-09
申请号：US18246091
申请日：2021-09-27
Inventor： Mitsuhisa YOSHIMURA , Naomi KURIHARA , Miwa OGAWA , Akihiro YAMAGUCHI
CPC classification number: H01G13/00 , H01G9/07 , H01G9/0032
Abstract: A film-forming device disclosed is a film-forming device for forming a film on a metal foil having a porous portion on a main surface thereof by a gas phase method, and includes a film-forming region in which the film is formed on the metal foil, conveyors to provided downstream of the film-forming region and drawing the metal foil from the film-forming region, and a control unit that controls the stress applied to the metal foil from the conveyors to 21 N/mm2 or less. This provides a film-forming device which does not cause defects easily on a film-forming target metal foil.
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公开(公告)号：US20240371575A1
公开(公告)日：2024-11-07
申请号：US18292788
申请日：2022-07-25
Inventor： Mitsuhisa YOSHIMURA , Toshifumi KADOKAWA , Masami TSUBAKI , Yuji OTSUKA
IPC: H01G9/055
Abstract: An electrode foil for an electrolytic capacitor includes a metal foil that includes a porous portion and a core portion continuous to the porous portion. The metal foil has a main surface in which pores in the porous portion are open. The porous portion includes a plurality of recessed portions that are open in the main surface and distributed in a dot pattern in an in-plane direction of the metal foil. The pores in the porous portion have an opening diameter smaller than 2 μm, recessed portions that are adjacent to each other have an opening diameter D1 μm and an opening diameter D2 μm, respectively, and are spaced apart from each other by a distance L μm, and the opening diameter D1 and the distance L satisfy 2≤D1 and 2≤L/D1≤50. The opening diameter D2 and the distance L satisfy 2≤D2 and 2≤L/D2≤50.
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公开(公告)号：US20240282533A1
公开(公告)日：2024-08-22
申请号：US18292224
申请日：2022-07-29
Inventor： Toshifumi KADOKAWA , Mitsuhisa YOSHIMURA , Masami TSUBAKI , Shumpei MATSUSHITA
CPC classification number: H01G9/048 , H01G9/0029 , H01G9/042
Abstract: An electrode foil for an electrolytic capacitor contains a valve metal, and includes a core portion, and a porous portion continuous with the core portion. The porous portion has a thickness T μm, and includes an inner layer region located on the core portion side, and a surface layer region located opposite to the core portion. The surface layer region is a region within a distance T/4 from an outer surface of the porous portion, and the inner layer region is a region within a distance T/4 from a boundary of the porous portion with the core portion. An average size D1 nm of pores in the surface layer region is smaller than an average size D2 nm of pores in the inner layer region.
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公开(公告)号：US20250149256A1
公开(公告)日：2025-05-08
申请号：US19018830
申请日：2025-01-13
Inventor： Mitsuhisa YOSHIMURA , Toshifumi KADOKAWA , Masami TSUBAKI
Abstract: A method for producing an electrode foil for electrolytic capacitor use includes: preparing a raw material foil; and etching the raw material foil. The raw material foil contains a valve metal, and has a plurality of recesses that open on a main surface thereof and that are arranged to be distributed in a dot-like manner in the direction of the main surface. The opening diameter of the recesses is 2 μm or more.
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公开(公告)号：US20240395471A1
公开(公告)日：2024-11-28
申请号：US18696846
申请日：2022-09-28
Inventor： Mitsuhisa YOSHIMURA , Miwa OGAWA , Naomi KURIHARA
Abstract: An electrode foil for an electrolytic capacitor includes: a metal foil with a first main surface and a second main surface that is opposite to the first main surface, having a first porous portion on the first main surface side and a second porous portion on the second main surface side; a first dielectric layer that covers a surface of the first porous portion; and a second dielectric layer that covers a surface of the second porous portion. A thickness F1 of the first dielectric layer and a thickness F2 of the second dielectric layer satisfy the relationship 0.75≤F1/F2≤0.97.
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Patent Agency Ranking
公开(公告)号：US20240304396A1
公开(公告)日：2024-09-12
申请号：US18263093
申请日：2022-01-24
Inventor： Mitsuhisa YOSHIMURA , Toshifumi KADOKAWA , Masami TSUBAKI , Yuji OTSUKA
Abstract: An electrode foil for an electrolytic capacitor includes a metal foil that includes a porous portion and a core portion continuous to the porous portion. The metal foil has a main surface in which pores in the porous portion are open. The porous portion includes a plurality of recessed portions that are open in the main surface and distributed in a dot pattern in an in-plane direction of the metal foil. The pores in the porous portion have an opening length smaller than 2 μm, and the recessed portions have an opening length of 2 μm or more.
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公开(公告)号：US20240428997A1
公开(公告)日：2024-12-26
申请号：US18824492
申请日：2024-09-04
Inventor： Naomi KURIHARA , Akihiro YAMAGUCHI , Mitsuhisa YOSHIMURA , Miwa OGAWA
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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公开(公告)号：US20230335341A1
公开(公告)日：2023-10-19
申请号：US18042435
申请日：2021-08-18
Inventor： Mitsuhisa YOSHIMURA , Masami TSUBAKI , Naomi KURIHARA , Miwa OGAWA
CPC classification number: H01G9/055 , H01G9/0029 , H01G9/045
Abstract: An electrode foil for an electrolytic capacitor includes an anode body having a porous portion and a core part continuous with the porous portion, a dielectric layer covering a surface of a metal skeleton forming the porous portion, wherein an interface layer including a first element is present between the metal skeleton and the dielectric layer, and the first element is at least one selected from the group consisting of sulfur, nitrogen, and phosphorus.
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公开(公告)号：US20220262577A1
公开(公告)日：2022-08-18
申请号：US17661709
申请日：2022-05-02
Inventor： Mitsuhisa YOSHIMURA , Miwa OGAWA , Natsuyo SASADA , Tatsuji AOYAMA
Abstract: A cathode foil for electrolytic capacitors includes a metal porous part, a metal core part that is continuous with the metal porous part, and a coating film covering the metal porous part. Pores in the metal porous part are open at a first main surface of the cathode foil. The coating film is disposed in a region from the first main surface to a depth more than or equal to 10% of a thickness of the metal porous part in a thickness direction of the metal porous part.
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10.发明申请公开(公告)号：US20220148815A1
公开(公告)日：2022-05-12
申请号：US17434263
申请日：2019-10-30
Inventor： Mitsuhisa YOSHIMURA , Shosuke NAKANO , Hiroshi YOSHIDA , Masami TSUBAKI , Naomi KURIHARA , Miwa OGAWA
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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