Patents by Inventor Hitoshi Fukui
Hitoshi Fukui has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240161983Abstract: A solid electrolytic capacitor includes at least one capacitor element including an anode part and a cathode part, an anode lead terminal, a cathode lead terminal, and an exterior body covering the capacitor element. Each of the anode lead terminal and the cathode lead terminal has a main surface and a side surface, and includes a buried part buried in the exterior body and an exposed part exposed from the exterior body. In at least one of the anode lead terminal or the cathode lead terminal, at least a part of a main surface of the exposed part is covered with a low-melting-point material, and a first side surface region in a side surface of the buried part is not covered with the low-melting-point material. The first side surface region is a region away from a boundary between the buried part and the exposed part by more than 0.36 mm.Type: ApplicationFiled: March 3, 2022Publication date: May 16, 2024Inventors: HITOSHI FUKUI, KATSUHIRO OGASAWARA, ATSUSHI TANAKA
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Publication number: 20240079184Abstract: 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.Type: ApplicationFiled: November 15, 2023Publication date: March 7, 2024Inventors: Kei HIROTA, Kyohei IWAOKA, Hitoshi FUKUI, Daisuke USA, Kouta MUNEYASU, Hiroki NAGAYAMA
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Patent number: 11862406Abstract: 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.Type: GrantFiled: January 23, 2020Date of Patent: January 2, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Kei Hirota, Kyohei Iwaoka, Hitoshi Fukui, Daisuke Usa, Kouta Muneyasu, Hiroki Nagayama
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Publication number: 20230386757Abstract: 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.Type: ApplicationFiled: August 15, 2023Publication date: November 30, 2023Inventor: Hitoshi FUKUI
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Patent number: 11769637Abstract: 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.Type: GrantFiled: January 17, 2020Date of Patent: September 26, 2023Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventor: Hitoshi Fukui
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Publication number: 20230245836Abstract: A solid electrolytic capacitor element includes an anode body, a dielectric layer disposed on a surface of the anode body, and a cathode part covering at least a part of the dielectric layer are provided. The cathode part includes a solid electrolyte layer covering the at least the part of the dielectric layer. The solid electrolyte layer contains a first polymer and a second polymer component. The first polymer component includes a monomer unit corresponding to a thiophene compound. The second polymer component includes a polymer anion. A Raman spectrum of a surface layer in the solid electrolyte layer has a peak characteristic for the first polymer component.Type: ApplicationFiled: July 15, 2021Publication date: August 3, 2023Inventors: MASATOSHI TAKESHITA, HIROMI OZAWA, YIHAN ZHANG, HITOSHI FUKUI
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Publication number: 20230223203Abstract: A solid electrolytic capacitor element includes an anode body that includes a porous part in at least a surface layer of the anode body, a dielectric layer, and a cathode part. The cathode part includes a solid electrolyte layer that covers the at least a part of the dielectric layer. The anode body includes a first part and a second part. The first part is a cathode forming part on which the solid electrolyte layer is formed, and the second part is a part on which the solid electrolyte layer is not formed. The second part includes at least an anode part including an end of the anode body opposite to the first part. The first part is sectionalized into a plurality of regions, and the first part has a groove at a boundary between adjacent regions among the plurality of regions.Type: ApplicationFiled: July 2, 2021Publication date: July 13, 2023Inventors: HITOSHI FUKUI, MAKOTO NAGASHIMA
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Publication number: 20230178306Abstract: 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.Type: ApplicationFiled: April 30, 2021Publication date: June 8, 2023Inventors: Takuya KURIMOTO, Hitoshi FUKUI
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Publication number: 20230076194Abstract: A capacitor element includes an anode body, a dielectric layer disposed on a surface of the anode body, 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. An insulating member is disposed from an outermost surface of the cathode lead-out layer to a depth of more than or equal to 0.001 ?m.Type: ApplicationFiled: January 26, 2021Publication date: March 9, 2023Inventors: HITOSHI FUKUI, KATSUHISA ISHIZAKI, MASAMICHI INOUE, DAISUKE USA, MAKOTO NAGASHIMA, HIROMI OZAWA
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Patent number: 11550179Abstract: To provide an optical film having excellent visibility in the wide angle direction. An optical film including at least one resin selected from the group consisting of a polyimide-based resin and a polyamide-based resin, wherein the optical film satisfies Formula (1): 0?Ts?0.35??(1) wherein Ts represents a scattered light ratio (%) and is defined as Ts=Td/Tt×100, Td and Tt represent a diffuse light transmittance (%) and a total light transmittance (%), measured in accordance with JIS K-7136, respectively.Type: GrantFiled: September 17, 2019Date of Patent: January 10, 2023Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Kazuki Daimatsu, Hitoshi Fukui, Masayoshi Karasawa
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Publication number: 20220415581Abstract: An electrolytic capacitor includes at least one capacitor element. The at least one capacitor element includes: an anode body including an anode lead portion, and a cathode forming portion; a dielectric layer disposed on at least a surface of the cathode forming portion of the anode body; and a cathode part covering at least a part of the dielectric layer. The cathode part includes a solid electrolyte layer that contains a conductive polymer, and covers at least a part of the dielectric layer. A ratio T1/T2 of a thickness T1 of the solid electrolyte layer formed at a corner portion of the anode body to a thickness T2 of the solid electrolyte layer formed at a center portion of a principal surface of the anode body is in a range from 0.8 to 1.7, inclusive, in a cross section of the at least one capacitor element.Type: ApplicationFiled: December 22, 2020Publication date: December 29, 2022Inventors: NAOKI UMAHASHI, MASATOSHI TAKESHITA, HITOSHI FUKUI, MAKOTO NAGASHIMA
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Patent number: 11387048Abstract: 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.Type: GrantFiled: November 4, 2020Date of Patent: July 12, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Takuya Nakayama, Natsuki Hatakeyama, Katsuhisa Ishizaki, Hitoshi Fukui
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Patent number: 11333932Abstract: To provide an optical film having excellent visibility in a wide angle direction. An optical film including at least one resin selected from the group consisting of a polyimide-based resin and a polyamide-based resin and having a total light transmittance of 85% or more and a haze of 0.5% or less, wherein when a direction parallel to a machine direction in a plane of the optical film during production of the optical film is defined as an MD direction and a direction vertical to the machine direction is defined as a TD direction, a first transmission image clarity value C60(MD) in a direction inclined 60° in the MD direction from a vertical direction to the plane of the optical film, a second transmission image clarity value C60(TD) in a direction inclined 60° in the TD direction from the vertical direction, and a third transmission image clarity value C0 of the vertical direction which are obtained when a width of an optical comb is 0.Type: GrantFiled: September 17, 2019Date of Patent: May 17, 2022Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Kazuki Daimatsu, Hitoshi Fukui, Masayoshi Karasawa
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Patent number: 11315739Abstract: An electrolytic capacitor includes an anode body, a dielectric layer disposed on a surface of the anode body, and a solid electrolyte layer disposed on a surface of the dielectric layer. The solid electrolyte layer includes a conductive polymer and a first compound. The first compound has a naphthalene skeleton, and includes at least one COOM1 group and at least one sulfonate group. The at least one sulfonate group is bonded to the naphthalene skeleton. The at least one COOM1 group is bonded to the naphthalene skeleton, where M1 is a hydrogen atom, a metal atom, or an onium group.Type: GrantFiled: December 21, 2018Date of Patent: April 26, 2022Assignee: PANASONIC INTEILECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Hitoshi Fukui, Ai Makino, Hiroshi Kojima
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Publication number: 20220102081Abstract: 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.Type: ApplicationFiled: January 23, 2020Publication date: March 31, 2022Inventors: KEI HIROTA, KYOHEI IWAOKA, HITOSHI FUKUI, DAISUKE USA, KOUTA MUNEYASU, HIROKI NAGAYAMA
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Publication number: 20220084756Abstract: 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.Type: ApplicationFiled: January 17, 2020Publication date: March 17, 2022Inventor: HITOSHI FUKUI
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Patent number: 11237302Abstract: To provide an optical film having excellent visibility in a wide angle direction. An optical film including a polyimide-based resin and a polyamide-based resin and having a total light transmittance of 85% or more and a haze of 0.5% or less, in which, when a direction parallel to a machine direction in a plane of the optical film during production of the optical film is defined as an MD direction and a direction vertical to the machine direction is defined as a TD direction, for at least any one surface of the optical film, a first reflection image clarity value CMD in a direction inclined 60° in the MD direction from a vertical direction to the plane of the optical film and a second reflection image clarity value CTD in a direction inclined 60° in the TD direction from the vertical direction which are obtained when a slit width of an optical comb is 0.125 mm in accordance with JIS K 7374 satisfy Formula (1) 45%?CMD?100%??(1), Formula (2) 30%?CTD?100%??(2), and Formula (3) 35%?(CMD+CTD)/2?100%??(3).Type: GrantFiled: September 17, 2019Date of Patent: February 1, 2022Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Kazuki Daimatsu, Hitoshi Fukui, Masayoshi Karasawa
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Patent number: 11189430Abstract: 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.Type: GrantFiled: May 7, 2018Date of Patent: November 30, 2021Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Hitoshi Fukui, Hiroshi Kojima, Ai Makino
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Patent number: 11189429Abstract: 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.Type: GrantFiled: December 21, 2018Date of Patent: November 30, 2021Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Hitoshi Fukui, Ai Makino, Hiroshi Kojima
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Patent number: 11152158Abstract: 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 conductive polymer, a polyanion, and an alkali component. The alkali component includes two or more kinds of alkali compound.Type: GrantFiled: June 3, 2019Date of Patent: October 19, 2021Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Hitoshi Fukui, Hiroshi Kojima