Patents by Inventor Yuichiro Tsubaki

Yuichiro Tsubaki 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).

  • Publication number: 20240177941
    Abstract: An electrolytic capacitor includes a capacitor element and a liquid component. The capacitor element includes an anode body including a dielectric layer on a surface of the anode body, and a solid electrolyte layer covering at least a part of a surface of the dielectric layer. The solid electrolyte layer contains a conductive polymer component, and the liquid component contains a first polymer component. The first polymer component includes a carbon chain whose main chain does not contain a heteroatom at a position other than a terminal of the main chain. Units constituting the first polymer component include at least one first unit selected from the group consisting of a (meth)acrylic acid-based unit having a carboxy group and a vinyl alcohol-based unit having a hydroxy group. A proportion of the at least one first unit in an entirety of the units constituting the first polymer component is more than 50 mass %.
    Type: Application
    Filed: November 6, 2023
    Publication date: May 30, 2024
    Inventors: YUICHIRO TSUBAKI, KENTA CHASHIRO, HIROYUKI ARIMA
  • Publication number: 20240177942
    Abstract: An electrolytic capacitor includes a capacitor element and a liquid component. The capacitor element includes an anode body that includes a dielectric layer on a surface of the anode body, and a solid electrolyte layer that covers at least a part of a surface of the dielectric layer. The solid electrolyte layer contains a conductive polymer component, and the liquid component contains a chelating agent.
    Type: Application
    Filed: November 9, 2023
    Publication date: May 30, 2024
    Inventors: YUICHIRO TSUBAKI, KAZUHIRO TAKATANI
  • Patent number: 11978597
    Abstract: A liquid component for an electrolytic capacitor includes at least one central atom selected from the group consisting of boron, aluminum, and silicon, and a ligand having a plurality of ligand atoms bonded to the central atom. The ligand atoms are at least one selected from the group consisting of oxygen and nitrogen, and are bonded to a carbon atom having no oxo group.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: May 7, 2024
    Assignees: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., SANYO CHEMICAL INDUSTRIES, LTD.
    Inventors: Yuichiro Tsubaki, Tatsuji Aoyama, Kazuyo Saito, Liyi Chen, Kengo Uchihashi
  • Patent number: 11935704
    Abstract: An electrolytic capacitor includes an anode body having a dielectric layer disposed on a surface of the anode body, a solid electrolyte layer that is in contact with the dielectric layer, and an electrolytic solution. The solid electrolyte layer includes a conductive polymer. The electrolytic solution contains a first base component, a first acid component, and a second acid component. The first base component includes an amidine compound. The first acid component includes a composite compound of an inorganic acid and an organic acid. The second acid component includes at least one selected from a group consisting of boric acid, phosphoric acid, phosphorous acid, hypophosphorous acid, and phosphonic acid.
    Type: Grant
    Filed: August 9, 2022
    Date of Patent: March 19, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yuichiro Tsubaki, Kazuyo Saito, Tatsuji Aoyama
  • Publication number: 20230377807
    Abstract: An electrolytic capacitor includes a capacitor element and an electrolytic solution. The capacitor element includes: an anode body including a dielectric layer; a cathode body; and a solid electrolyte in contact with the dielectric layer. The electrolytic solution includes a solvent, a solute, and a polymer component. The solvent includes an ethylene glycol compound. The polymer component includes polyalkylene glycol. The polyalkylene glycol includes at least one of (i) a mixture of polyoxyethylene and polyoxypropylene and (ii) an oxyethylene-oxypropylene copolymer. In the polyalkylene glycol, a molar ratio m/n of oxyethylene units to oxypropylene units is greater than 1.
    Type: Application
    Filed: July 27, 2023
    Publication date: November 23, 2023
    Inventors: Yuichiro TSUBAKI, Tatsuji AOYAMA, Kazuyo SAITO, Yuji OTSUKA
  • Publication number: 20230368982
    Abstract: An electrolytic capacitor includes a capacitor element and a liquid component, wherein the capacitor element includes an anode body having a dielectric layer on a surface thereof, and a conductive polymer compound covering at least a portion of the dielectric layer. The liquid component includes an acid component, a base component, a solvent, and an antioxidant. The solvent includes water and a polyol compound. The acid component includes a coordination compound including a central atom, and an organic molecule having a plurality of coordination atoms bonded to the central atom, and at least one of the plurality of coordination atoms is an oxygen atom bonded to a carbonyl group.
    Type: Application
    Filed: September 24, 2021
    Publication date: November 16, 2023
    Inventors: Yuichiro TSUBAKI, Kazuyo SAITO, Tatsuji AOYAMA
  • Publication number: 20230360861
    Abstract: A method for manufacturing an electrolytic capacitor of the present disclosure includes first to third steps. In the first step, a capacitor element is prepared that includes an anode body on which a dielectric layer is formed. In the second step, the capacitor element is impregnated with a first treatment solution containing at least a conductive polymer and a first solvent. In the third step, the capacitor element is, after the second step, impregnated with a second treatment solution that contains a polyol compound having 3 or more hydroxyl groups per molecule.
    Type: Application
    Filed: July 14, 2023
    Publication date: November 9, 2023
    Inventors: Yuichiro TSUBAKI, TATSUJI AOYAMA
  • Publication number: 20230360860
    Abstract: An electrolytic capacitor including a capacitor element, and a liquid component. The capacitor element includes an anode body having a dielectric layer at a surface of the anode body, and a conductive polymer component covering part of the dielectric layer. The liquid component contains a first solvent, a base component, and an acid component. The first solvent is at least one selected from the group consisting of a polyol and a derivative thereof. The base component contains a first base a conjugate acid of which has an acid dissociation constant of 5 or more and 10 or less and which has no boiling point or a boiling point of 100° C. or higher.
    Type: Application
    Filed: July 21, 2021
    Publication date: November 9, 2023
    Inventors: Kazuyo SAITO, Yuichiro TSUBAKI, Tatsuji AOYAMA, Kengo UCHIHASHI
  • Patent number: 11804334
    Abstract: An electrolytic capacitor includes an anode body, a cathode body, and a conductive polymer and a liquid component that are disposed between the anode body and the cathode body. The liquid component contains an acid component, a base component, and an aromatic additive. The acid component includes at least one of an aromatic carboxylic acid and an aromatic carboxylic acid derivative. The at least one of the aromatic carboxylic acid and the aromatic carboxylic acid derivative includes at least two carboxy groups and at least one aromatic ring. A content proportion of the base component in the liquid component is more than or equal to 1% by mass. The aromatic additive includes an electron withdrawing group and an electron donating group. A content ratio of the aromatic additive contained in the liquid component is more than or equal to 50 parts by mass with respect to 100 parts by mass of the conductive polymer.
    Type: Grant
    Filed: August 22, 2022
    Date of Patent: October 31, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yuichiro Tsubaki, Kazuyo Saito, Tatsuji Aoyama
  • Publication number: 20230326684
    Abstract: An electrolytic capacitor includes a capacitor element and electrolytic solution. The capacitor element includes an anode body with an oxide film, and a solid electrolyte contacting the oxide film. The electrolytic solution contains a solvent and a solute. The solvent contains at least one selected from the group consisting of a lactone compound, a glycol compound, and a sulfone compound. The solute includes a first acid component and a base component. The first acid component includes at least one of a benzenedicarboxylic acid and a derivative of the benzenedicarboxylic acid. The base component includes at least one of an amine and an amidine. A concentration of the solute in the electrolytic solution ranges from 15% by mass to 40% by mass, inclusive. A ratio (V/Vw) of a formation voltage V of the oxide film to a rated voltage Vw of the electrolytic capacitor is less than or equal to 1.7.
    Type: Application
    Filed: June 12, 2023
    Publication date: October 12, 2023
    Inventors: Kazuyo SAITO, Yuichiro Tsubaki, Tatsuji Aoyama
  • Patent number: 11776762
    Abstract: Disclosed is an electrolytic capacitor including: a capacitor element including a pair of electrodes; an electrolyte interposed between the pair of electrodes; a pair of leads electrically connected to the pair of electrodes, respectively; a case in which the capacitor element and the electrolyte are accommodated, and that has an opening; a sealing member that seals the opening, and has a pair of insertion holes for leading out the leads; an insulating plate having a pair of through holes for leading out the leads; and a resin member filled between the sealing member and the insulating plate, wherein the insulating plate has a resin bonding surface that abuts against the resin member, and a mounting surface opposed to the resin bonding surface, and includes at least one protrusion or recess on the resin bonding surface.
    Type: Grant
    Filed: September 27, 2022
    Date of Patent: October 3, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Miyoko Masuda, Yuichiro Tsubaki, Tatsuji Aoyama, Daisuke Kubo
  • Patent number: 11756739
    Abstract: An electrolytic capacitor includes a capacitor element and an electrolytic solution. The capacitor element includes: an anode body including a dielectric layer; a cathode body; and a solid electrolyte in contact with the dielectric layer. The electrolytic solution includes a solvent, a solute, and a polymer component. The solvent includes an ethylene glycol compound. The polymer component includes polyalkylene glycol. The polyalkylene glycol includes at least one of (i) a mixture of polyoxyethylene and polyoxypropylene and (ii) an oxyethylene-oxypropylene copolymer. In the polyalkylene glycol, a molar ratio m/n of oxyethylene units to oxypropylene units is greater than 1.
    Type: Grant
    Filed: March 7, 2022
    Date of Patent: September 12, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yuichiro Tsubaki, Tatsuji Aoyama, Kazuyo Saito, Yuji Otsuka
  • Patent number: 11749464
    Abstract: An electrolytic capacitor according to the present disclosure includes an anode body, a cathode body, a solid electrolyte, and a liquid component. The anode body has a surface provided with a dielectric layer. The solid electrolyte is in contact with the dielectric layer, is disposed between the anode body and the cathode body and contains conductive polymer. The liquid component is in contact with the dielectric layer and the solid electrolyte and contains a solvent and an acid component. The acid component contains a first polymer acid component including a sulfonic acid group or a carboxylic acid group.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: September 5, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yuichiro Tsubaki, Daisuke Kubo, Tatsuji Aoyama
  • Publication number: 20230260716
    Abstract: A disclosed electrolytic capacitor includes a capacitor element, and a liquid component. The capacitor element includes an anode body having a dielectric layer at a surface of the anode body, and a conductive polymer compound covering at least part of the dielectric layer. The liquid component contains an acid component, a base component, and a solvent. The solvent includes an organic compound having a hydroxy group, and the acid component includes an organic carboxylic acid compound. The base component includes at least one selected from the group consisting of a primary amine compound and a secondary amine compound.
    Type: Application
    Filed: July 29, 2021
    Publication date: August 17, 2023
    Inventors: Yuichiro TSUBAKI, Daisuke KUBO
  • Patent number: 11715605
    Abstract: An electrolytic capacitor includes a capacitor element and electrolytic solution. The capacitor element includes an anode body with an oxide film, and a solid electrolyte contacting the oxide film. The electrolytic solution contains a solvent and a solute. The solvent contains at least one selected from the group consisting of a lactone compound, a glycol compound, and a sulfone compound. The solute includes a first acid component and a base component. The first acid component includes at least one of a benzenedicarboxylic acid and a derivative of the benzenedicarboxylic acid. The base component includes at least one of an amine and an amidine. A concentration of the solute in the electrolytic solution ranges from 15% by mass to 40% by mass, inclusive. A ratio (V/Vw) of a formation voltage V of the oxide film to a rated voltage Vw of the electrolytic capacitor is less than or equal to 1.7.
    Type: Grant
    Filed: November 4, 2021
    Date of Patent: August 1, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kazuyo Saito, Yuichiro Tsubaki, Tatsuji Aoyama
  • Publication number: 20230109930
    Abstract: An electrolytic capacitor includes an anode body having a dielectric layer; a solid electrolyte layer in contact with the dielectric layer of the anode body; and an electrolytic solution. The electrolytic solution contains a solvent and a solute. The solvent contains a glycol compound. The solute contains an acid component and a base component. A mass of the acid component in the solute is greater than a mass of the base component in the solute. The acid component contains a first aromatic compound having a hydroxyl group.
    Type: Application
    Filed: October 11, 2022
    Publication date: April 13, 2023
    Inventors: Yuichiro Tsubaki, Tatsuji Aoyama
  • Publication number: 20230050288
    Abstract: A liquid component for an electrolytic capacitor includes at least one central atom selected from the group consisting of boron, aluminum, and silicon, and a ligand having a plurality of ligand atoms bonded to the central atom. The ligand atoms are at least one selected from the group consisting of oxygen and nitrogen, and are bonded to a carbon atom having no oxo group.
    Type: Application
    Filed: December 8, 2020
    Publication date: February 16, 2023
    Inventors: Yuichiro TSUBAKI, Tatsuji AOYAMA, Kazuyo SAITO, Liyi CHEN, Kengo UCHIHASHI
  • Publication number: 20230013790
    Abstract: Disclosed is an electrolytic capacitor including: a capacitor element including a pair of electrodes; an electrolyte interposed between the pair of electrodes; a pair of leads electrically connected to the pair of electrodes, respectively; a case in which the capacitor element and the electrolyte are accommodated, and that has an opening; a sealing member that seals the opening, and has a pair of insertion holes for leading out the leads; an insulating plate having a pair of through holes for leading out the leads; and a resin member filled between the sealing member and the insulating plate, wherein the insulating plate has a resin bonding surface that abuts against the resin member, and a mounting surface opposed to the resin bonding surface, and includes at least one protrusion or recess on the resin bonding surface.
    Type: Application
    Filed: September 27, 2022
    Publication date: January 19, 2023
    Inventors: Miyoko MASUDA, Yuichiro TSUBAKI, Tatsuji AOYAMA, Daisuke KUBO
  • Publication number: 20220399170
    Abstract: An electrolytic capacitor includes an anode body, a cathode body, and a conductive polymer and a liquid component that are disposed between the anode body and the cathode body. The liquid component contains an acid component, a base component, and an aromatic additive. The acid component includes at least one of an aromatic carboxylic acid and an aromatic carboxylic acid derivative. The at least one of the aromatic carboxylic acid and the aromatic carboxylic acid derivative includes at least two carboxy groups and at least one aromatic ring. A content proportion of the base component in the liquid component is more than or equal to 1% by mass. The aromatic additive includes an electron withdrawing group and an electron donating group. A content ratio of the aromatic additive contained in the liquid component is more than or equal to 50 parts by mass with respect to 100 parts by mass of the conductive polymer.
    Type: Application
    Filed: August 22, 2022
    Publication date: December 15, 2022
    Inventors: YUICHIRO TSUBAKI, Kazuyo Saito, Tatsuji Aoyama
  • Publication number: 20220392713
    Abstract: An electrolytic capacitor includes an anode body having a dielectric layer disposed on a surface of the anode body, a solid electrolyte layer that is in contact with the dielectric layer, and an electrolytic solution. The solid electrolyte layer includes a conductive polymer. The electrolytic solution contains a first base component, a first acid component, and a second acid component. The first base component includes an amidine compound. The first acid component includes a composite compound of an inorganic acid and an organic acid. The second acid component includes at least one selected from a group consisting of boric acid, phosphoric acid, phosphorous acid, hypophosphorous acid, and phosphonic acid.
    Type: Application
    Filed: August 9, 2022
    Publication date: December 8, 2022
    Inventors: Yuichiro TSUBAKI, Kazuyo SAITO, Tatsuji AOYAMA