Patents by Inventor Tomoyuki Tashiro
Tomoyuki Tashiro 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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Patent number: 11945923Abstract: Disclosed is a method for producing an electrolytic capacitor, the method including the steps of preparing an anode foil that includes a dielectric layer, a cathode foil, and a fiber structure; preparing a conductive polymer dispersion liquid that contains a conductive polymer component and a dispersion medium; producing a separator by applying the conductive polymer dispersion liquid to the fiber structure and then removing at least a portion of the dispersion medium; and producing a capacitor element by sequentially stacking the anode foil, the separator, and the cathode foil. The dispersion medium contains water. The fiber structure contains a synthetic fiber in an amount of 50 mass % or more. The fiber structure has a density of 0.2 g/cm3 or more and less than 0.45 g/cm3.Type: GrantFiled: January 29, 2020Date of Patent: April 2, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Daisuke Kubo, Hiroyuki Arima, Tomoyuki Tashiro, Kazuhiro Takatani, Kenta Chashiro, Shumpei Matsushita
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Patent number: 11908633Abstract: An electrolytic capacitor includes a capacitor element, a first current collector, and a case. The capacitor element includes a wound body in which a first electrode foil and a second electrode foil are wound. The first electrode foil and the second electrode foil face each other. The first current collector is connected to the first electrode foil. The case houses the capacitor element and the first current collector. The first electrode foil includes a first facing portion that faces the second electrode foil and a first non-facing portion that does not face the second electrode foil. The first non-facing portion is located at a first end portion in a winding axis of the wound body. The first current collector is disposed in a vicinity of the first end portion of the wound body to be connected to the first non-facing portion of the first electrode foil.Type: GrantFiled: December 2, 2021Date of Patent: February 20, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Shumpei Matsushita, Tomoyuki Tashiro, Kenta Chashiro
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Publication number: 20230137973Abstract: An electrolytic capacitor includes an electrode foil and a lead member connected to the electrode foil. The electrode foil has a first principal surface and a second principal surface opposite to the first principal surface. The electrode foil and the lead member are connected by a caulking part in an overlapping part in which the first principal surface of the electrode foil and the lead member overlap each other. The caulking part has a through-hole penetrating the electrode foil and the lead member. The electrode foil in the caulking part includes a first folded part that is folded back at a peripheral edge portion of the through-hole to be disposed on the second principal surface. The lead member in the caulking part includes (i) a penetrating part that penetrates the electrode foil and (ii) a second folded part that is folded back at an end portion of the penetrating part to be disposed on the second principal surface. The penetrating part includes an inner wall of the through-hole.Type: ApplicationFiled: October 15, 2022Publication date: May 4, 2023Inventors: YUJI OTSUKA, MASAHIRO ABURAYA, TATSUJI AOYAMA, TOMOYUKI TASHIRO
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Publication number: 20220359127Abstract: A method for producing an electrolytic capacitor includes: preparing an anode foil, a cathode foil, and a fibrous structure, the anode foil having a porous portion including a dielectric layer; preparing a conductive polymer-containing liquid, the conductive polymer-containing liquid containing a conductive polymer component and a first solvent; forming a separator by removing at least a part of the first solvent after applying the conductive polymer-containing liquid to the fibrous structure; forming a capacitor element from the anode foil, the separator, and the cathode foil; and impregnating the capacitor element with an electrolytic solution. An electrical conductivity of the electrolytic solution at 30° C. is 3.0 mS/cm or more.Type: ApplicationFiled: July 21, 2022Publication date: November 10, 2022Inventors: TATSUJI AOYAMA, YUJI OTSUKA, TOMOYUKI TASHIRO, KENTA CHASHIRO, YUICHIRO TSUBAKI
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Publication number: 20220162404Abstract: Disclosed is a method for producing an electrolytic capacitor, the method including the steps of preparing an anode foil that includes a dielectric layer, a cathode foil, and a fiber structure; preparing a conductive polymer dispersion liquid that contains a conductive polymer component and a dispersion medium; producing a separator by applying the conductive polymer dispersion liquid to the fiber structure and then removing at least a portion of the dispersion medium; and producing a capacitor element by sequentially stacking the anode foil, the separator, and the cathode foil. The dispersion medium contains water. The fiber structure contains a synthetic fiber in an amount of 50 mass % or more. The fiber structure has a density of 0.2 g/cm3 or more and less than 0.45 g/cm3.Type: ApplicationFiled: January 29, 2020Publication date: May 26, 2022Inventors: Daisuke KUBO, Hiroyuki ARIMA, Tomoyuki TASHIRO, Kazuhiro TAKATANI, Kenta CHASHIRO, Shumpei MATSUSHITA
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Publication number: 20220093342Abstract: An electrolytic capacitor includes a capacitor element, a first current collector, and a case. The capacitor element includes a wound body in which a first electrode foil and a second electrode foil are wound. The first electrode foil and the second electrode foil face each other. The first current collector is connected to the first electrode foil. The case houses the capacitor element and the first current collector. The first electrode foil includes a first facing portion that faces the second electrode foil and a first non-facing portion that does not face the second electrode foil. The first non-facing portion is located at a first end portion in a winding axis of the wound body. The first current collector is disposed in a vicinity of the first end portion of the wound body to be connected to the first non-facing portion of the first electrode foil.Type: ApplicationFiled: December 2, 2021Publication date: March 24, 2022Inventors: SHUMPEI MATSUSHITA, TOMOYUKI TASHIRO, KENTA CHASHIRO
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Patent number: 11081286Abstract: A method for manufacturing an electrolytic capacitor includes a first step, a second step, and a third step. In the first step, a capacitor element is formed. The capacitor element includes an anode body, a cathode body, and a separator. The anode body includes a dielectric layer formed on a surface of the anode body. And the separator is disposed between the anode body and the cathode body. In the second step, the capacitor element is impregnated with a treatment solution containing an acid component and a base component. In the third step, the capacitor element is, after the second step, impregnated with a conductive polymer dispersion in a state that a part of the treatment solution remains in the capacitor element. The conductive polymer dispersion is obtained by dispersing, in a solvent, conductive polymer particles each including polyanion. A pH of the treatment solution is higher than a pH of the conductive polymer dispersion.Type: GrantFiled: September 5, 2019Date of Patent: August 3, 2021Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Shumpei Matsushita, Tomoyuki Tashiro, Takayuki Matsumoto, Tatsuji Aoyama
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Patent number: 10734163Abstract: An electrolytic capacitor includes a cathode foil, an anode foil, a conductive polymer, and a liquid component. The anode foil has a dielectric layer on a main surface of the anode foil. The conductive polymer covers at least part of the dielectric layer. The conductive polymer is disposed between the cathode foil and the anode foil. The liquid component is in contact with the conductive polymer. The cathode foil includes a first oxide coating film on an end surface of the cathode foil.Type: GrantFiled: September 7, 2018Date of Patent: August 4, 2020Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Tatsuji Aoyama, Tomoyuki Tashiro, Yukiya Shimoyama
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Publication number: 20200105479Abstract: A method for manufacturing an electrolytic capacitor includes a first step, a second step, and a third step. In the first step, a capacitor element is formed. The capacitor element includes an anode body, a cathode body, and a separator. The anode body includes a dielectric layer formed on a surface of the anode body. And the separator is disposed between the anode body and the cathode body. In the second step, the capacitor element is impregnated with a treatment solution containing an acid component and a base component. In the third step, the capacitor element is, after the second step, impregnated with a conductive polymer dispersion in a state that a part of the treatment solution remains in the capacitor element. The conductive polymer dispersion is obtained by dispersing, in a solvent, conductive polymer particles each including polyanion. A pH of the treatment solution is higher than a pH of the conductive polymer dispersion.Type: ApplicationFiled: September 5, 2019Publication date: April 2, 2020Inventors: SHUMPEI MATSUSHITA, TOMOYUKI TASHIRO, TAKAYUKI MATSUMOTO, TATSUJI AOYAMA
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Publication number: 20200013557Abstract: An electrolytic capacitor includes a capacitor element, a case housing the capacitor element, and a first heat radiation layer having an insulating property. The first heat radiation layer covers at least part of the capacitor element. A thermal conductivity ?C of the case in a thickness direction is greater than or equal to 1 W/m·K. A thermal emissivity ?1 of the first heat radiation layer is greater than or equal to 0.7.Type: ApplicationFiled: September 18, 2019Publication date: January 9, 2020Inventors: TAKAYUKI MATSUMOTO, HONAMI NISHINO, SHIN FUJITA, TOMOYUKI TASHIRO, MASATO MORI, HIROHISA HINO
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Patent number: 10522297Abstract: A power storage device has a power storage element and an electrolytic solution. The power storage element includes an anode body, a cathode body opposed to the anode body, and a separator interposed between the anode body and the cathode body. The separator includes a separator base material and a conductive polymer deposited on the separator base material. The power storage element is impregnated with the electrolytic solution. The separator has a first surface layer, which includes a first surface opposed to the anode body, and a second surface layer, which includes a second surface opposed to the cathode body. An amount of the conductive polymer deposited in a first separator half body, which is a part from a center of the separator to the first surface, is greater than an amount of the conductive polymer deposited in a second separator half body, which is a part from the center of the separator to the second surface.Type: GrantFiled: December 22, 2017Date of Patent: December 31, 2019Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Daisuke Kubo, Masayuki Takahashi, Yukihiro Shimasaki, Tomoyuki Tashiro, Tatsuji Aoyama
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Patent number: 10431392Abstract: An electrical storage device includes an electrical storage element and an electrolytic solution. The electrical storage element is formed of an anode body, a cathode body facing the anode body, and a separator interposed between the anode body and the cathode body. The separator includes a separator substrate and a conductive polymer adhering to the separator substrate. The electrical storage element is impregnated with the electrolytic solution. The separator includes a first surface layer having a first surface facing the anode body and a second surface layer having a second surface facing the cathode body. The first surface layer includes a first region that is not provided with the conductive polymer, and the second surface layer includes a second region provided with the conductive polymer.Type: GrantFiled: December 13, 2017Date of Patent: October 1, 2019Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Daisuke Kubo, Masayuki Takahashi, Yukihiro Shimasaki, Tomoyuki Tashiro, Tatsuji Aoyama
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Publication number: 20190006112Abstract: An electrolytic capacitor includes a cathode foil, an anode foil, a conductive polymer, and a liquid component. The anode foil has a dielectric layer on a main surface of the anode foil. The conductive polymer covers at least part of the dielectric layer. The conductive polymer is disposed between the cathode foil and the anode foil. The liquid component is in contact with the conductive polymer. The cathode foil includes a first oxide coating film on an end surface of the cathode foil.Type: ApplicationFiled: September 7, 2018Publication date: January 3, 2019Inventors: Tatsuji Aoyama, Tomoyuki Tashiro, Yukiya Shimoyama
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Patent number: 10121598Abstract: A method for producing an electrolytic capacitor according to the present disclosure includes a first step of preparing a capacitor element that includes an anode body having a dielectric layer; a second step of impregnating the capacitor element with a first treatment solution containing a conductive polymer and a first solvent; and a third step of impregnating the capacitor element with an electrolyte solution after the second step, the capacitor element being, in the third step, impregnated with the electrolyte solution while including a liquid.Type: GrantFiled: December 12, 2016Date of Patent: November 6, 2018Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Tatsuji Aoyama, Tomoyuki Tashiro, Yukiya Shimoyama, Takuya Maruta
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Patent number: 10121599Abstract: A method for producing an electrolytic capacitor includes: a first step of preparing a capacitor element that includes an anode body on which a dielectric layer is formed; a second step of impregnating the capacitor element with a first treatment solution containing a first solvent and a conductive polymer; a third step of impregnating, after the second step, the capacitor element with a second treatment solution containing a second solvent; and a fourth step of impregnating, after the third step, the capacitor element with an electrolyte solution containing a third solvent. Both the second solvent and the third solvent are an aprotic solvent.Type: GrantFiled: April 16, 2018Date of Patent: November 6, 2018Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Tatsuji Aoyama, Tomoyuki Tashiro, Junya Kushizaki, Shunpei Matsushita
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Publication number: 20180240600Abstract: A method for producing an electrolytic capacitor includes: a first step of preparing a capacitor element that includes an anode body on which a dielectric layer is formed; a second step of impregnating the capacitor element with a first treatment solution containing a first solvent and a conductive polymer; a third step of impregnating, after the second step, the capacitor element with a second treatment solution containing a second solvent; and a fourth step of impregnating, after the third step, the capacitor element with an electrolyte solution containing a third solvent. Both the second solvent and the third solvent are an aprotic solvent.Type: ApplicationFiled: April 16, 2018Publication date: August 23, 2018Inventors: Tatsuji AOYAMA, Tomoyuki TASHIRO, Junya KUSHIZAKI, Shunpei MATSUSHITA
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Patent number: 9978526Abstract: A method for producing an electrolytic capacitor according to the present disclosure is characterized by including a first step of preparing a capacitor element that includes an anode body on which a dielectric layer is formed; a second step of impregnating the capacitor element with a first treatment solution containing a first solvent and a conductive polymer; a third step of impregnating, after the second step, the capacitor element with a second treatment solution containing a second solvent; and a fourth step of impregnating, after the third step, the capacitor element with an electrolyte solution containing a third solvent, both the second solvent and the third solvent being a protic solvent.Type: GrantFiled: December 12, 2016Date of Patent: May 22, 2018Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Tatsuji Aoyama, Tomoyuki Tashiro, Junya Kushizaki, Shunpei Matsushita
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Publication number: 20180122589Abstract: A power storage device has a power storage element and an electrolytic solution. The power storage element includes an anode body, a cathode body opposed to the anode body, and a separator interposed between the anode body and the cathode body. The separator includes a separator base material and a conductive polymer deposited on the separator base material. The power storage element is impregnated with the electrolytic solution. The separator has a first surface layer, which includes a first surface opposed to the anode body, and a second surface layer, which includes a second surface opposed to the cathode body. An amount of the conductive polymer deposited in a first separator half body, which is a part from a center of the separator to the first surface, is greater than an amount of the conductive polymer deposited in a second separator half body, which is a part from the center of the separator to the second surface.Type: ApplicationFiled: December 22, 2017Publication date: May 3, 2018Inventors: Daisuke KUBO, Masayuki Takahashi, Yukihiro Shimasaki, Tomoyuki Tashiro, Tatsuji Aoyama
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Publication number: 20180108490Abstract: An electrical storage device includes an electrical storage element and an electrolytic solution. The electrical storage element is formed of an anode body, a cathode body facing the anode body, and a separator interposed between the anode body and the cathode body. The separator includes a separator substrate and a conductive polymer adhering to the separator substrate. The electrical storage element is impregnated with the electrolytic solution. The separator includes a first surface layer having a first surface facing the anode body and a second surface layer having a second surface facing the cathode body. The first surface layer includes a first region that is not provided with the conductive polymer, and the second surface layer includes a second region provided with the conductive polymer.Type: ApplicationFiled: December 13, 2017Publication date: April 19, 2018Inventors: Daisuke KUBO, Masayuki TAKAHASHI, Yukihiro SHIMASAKI, Tomoyuki TASHIRO, Tatsuji AOYAMA
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Patent number: 9887045Abstract: A power storage device has a power storage element and an electrolytic solution. The power storage element includes an anode body, a cathode body opposed to the anode body, and a separator interposed between the anode body and the cathode body. The separator includes a separator base material and a conductive polymer deposited on the separator base material. The power storage element is impregnated with the electrolytic solution. The separator has a first surface layer, which includes a first surface opposed to the anode body, and a second surface layer, which includes a second surface opposed to the cathode body. The first surface layer has a first region in which the conductive polymer is deposited, and the second surface layer has a second region in which the conductive polymer is not deposited.Type: GrantFiled: September 6, 2016Date of Patent: February 6, 2018Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Daisuke Kubo, Masayuki Takahashi, Yukihiro Shimasaki, Tomoyuki Tashiro, Tatsuji Aoyama