Patents by Inventor Takashi Takezawa

Takashi Takezawa 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).

  • Patent number: 12387882
    Abstract: A capacitor includes a capacitor element having a predetermined liquid preparation held between a pair of electrodes facing each other across a separator, a body case for housing the capacitor element, and a sealing member made of rubber for sealing seals the body case. A supplying portion is provided in contact with the sealing member to supply the liquid preparation held in the capacitor element to the sealing member. The liquid preparation has a lipid-soluble sealing member deterioration preventing agent dissolved in a lipophilic solvent. The sealing member deterioration preventing agent supplied by the supplying portion to the sealing member permeates the sealing member. The ratio by weight of the sealing member deterioration preventing agent in the sealing member to the sealing member is 0.1% by weight to 25% by weight.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: August 12, 2025
    Assignee: SUN Electronic Industries Corp.
    Inventors: Takashi Takezawa, Masakazu Hosogi, Hirokazu Nishikori
  • Patent number: 12283437
    Abstract: A capacitor 1 includes a capacitor element 3 holding solution between an anode foil 5 and a cathode foil 7 that are wound up with a separator 6 in between, a body case 2 for housing the capacitor element 3, and a sealing member 4 for sealing the body case 2. A part of the separator 6 makes contact, at a plurality of points or over an area, with the face of the sealing member 4 facing the capacitor element 3 so as to rest on that face. The solution contains, dissolved in a lipophilic solvent, deterioration preventing agent that solidifies by oxidation. The solution is supplied through the separator 6 to the sealing member 4 and permeates the sealing member 4, so that a coating 17 resulting from the agent solidifying coats the outer face of the sealing member 4, leaving the solution present in the sealing member 4.
    Type: Grant
    Filed: January 12, 2024
    Date of Patent: April 22, 2025
    Assignee: SUN Electronic Industries Corp.
    Inventors: Takashi Takezawa, Masakazu Hosogi, Hirokazu Nishikori
  • Publication number: 20240347280
    Abstract: An electrolytic capacitor 1 includes: a capacitor element 3 in which an anode foil 5 and a cathode foil 7 each having a dielectric oxide film face each other across a separator 6; a body case 2 that houses the capacitor element 3; and a sealing member 4 that seals the body case 2. An electrolyte and a hydrophilic compound are held between the anode foil 5 and the cathode foil 7. A sealing member deterioration preventing agent immiscible with the hydrophilic compound is arranged inside the body case 2.
    Type: Application
    Filed: August 23, 2022
    Publication date: October 17, 2024
    Applicant: SUN Electronic Industries Corp.
    Inventors: Hirokazu NISHIKORI, Takashi TAKEZAWA, Masakazu HOSOGI, Tadahito ITO
  • Patent number: 12027323
    Abstract: A capacitor includes a capacitor element that holds a predetermined solution between an anode foil and a cathode foil wound up with a separator in between, a body case that is formed in the shape of a bottomed tube closed at one end with a wall and open at the other end to have an opening, a liquid supply sheet that is arranged between the inner face of the case and the outer face of the element, and a sealing member that seals the opening. The solution has a sealing member deterioration preventing agent dissolved in a lipophilic solvent. The sheet has an absorption portion that makes contact with the separator to absorb the solution and a supply portion that makes contact with the sealing member to supply it with the solution.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: July 2, 2024
    Assignee: SUN Electronic Industries Corp.
    Inventors: Takashi Takezawa, Masakazu Hosogi
  • Publication number: 20240194415
    Abstract: A capacitor 1 includes a capacitor element 3 holding solution between an anode foil 5 and a cathode foil 7 that are wound up with a separator 6 in between, a body case 2 for housing the capacitor element 3, and a sealing member 4 for sealing the body case 2. A part of the separator 6 makes contact, at a plurality of points or over an area, with the face of the sealing member 4 facing the capacitor element 3 so as to rest on that face. The solution contains, dissolved in a lipophilic solvent, deterioration preventing agent that solidifies by oxidation. The solution is supplied through the separator 6 to the sealing member 4 and permeates the sealing member 4, so that a coating 17 resulting from the agent solidifying coats the outer face of the sealing member 4, leaving the solution present in the sealing member 4.
    Type: Application
    Filed: January 12, 2024
    Publication date: June 13, 2024
    Applicant: SUN Electronic Industries Corp.
    Inventors: Takashi TAKEZAWA, Masakazu HOSOGI, Hirokazu NISHIKORI
  • Patent number: 11990286
    Abstract: A capacitor 1 includes a capacitor element 3 holding solution between an anode foil 5 and a cathode foil 7 that are wound up with a separator 6 in between, a body case 2 for housing the capacitor element 3, and a sealing member 4 for sealing the body case 2. A part of the separator 6 makes contact, at a plurality of points or over an area, with the face of the sealing member 4 facing the capacitor element 3 so as to rest on that face. The solution contains, dissolved in a lipophilic solvent, deterioration preventing agent that solidifies by oxidation. The solution is supplied through the separator 6 to the sealing member 4 and permeates the sealing member 4, so that a coating 17 resulting from the agent solidifying coats the outer face of the sealing member 4, leaving the solution present in the sealing member 4.
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: May 21, 2024
    Assignee: SUN ELECTRONIC INDUSTRIES CORP.
    Inventors: Takashi Takezawa, Masakazu Hosogi, Hirokazu Nishikori
  • Patent number: 11915887
    Abstract: A capacitor 1 includes a capacitor element 3 holding solution between an anode foil 5 and a cathode foil 7 that are wound up with a separator 6 in between, a body case 2 for housing the capacitor element 3, and a sealing member 4 for sealing the body case 2. A part of the separator 6 makes contact, at a plurality of points or over an area, with the face of the sealing member 4 facing the capacitor element 3 so as to rest on that face. The solution contains, dissolved in a lipophilic solvent, deterioration preventing agent that solidifies by oxidation. The solution is supplied through the separator 6 to the sealing member 4 and permeates the sealing member 4, so that a coating 17 resulting from the agent solidifying coats the outer face of the sealing member 4, leaving the solution present in the sealing member 4.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: February 27, 2024
    Assignee: SUN Electronic Industries Corp.
    Inventors: Takashi Takezawa, Masakazu Hosogi, Hirokazu Nishikori
  • Publication number: 20230326685
    Abstract: A capacitor 1 includes a capacitor element 3 having a predetermined liquid preparation held between a pair of electrodes 5, 7 facing each other across a separator 6, a body case 2 for housing the capacitor element 3, and a sealing member 4 made of rubber for sealing seals the body case 2. A supplying portion is provided in contact with the sealing member 4 to supply the liquid preparation held in the capacitor element 3 to the sealing member 4. The liquid preparation has a lipid-soluble sealing member deterioration preventing agent dissolved in a lipophilic solvent. The sealing member deterioration preventing agent supplied by the supplying portion to the sealing member 4 permeates the sealing member 4. The ratio by weight of the sealing member deterioration preventing agent in the sealing member 4 to the sealing member 4 is 0.1% by weight to 25% by weight.
    Type: Application
    Filed: February 28, 2020
    Publication date: October 12, 2023
    Applicant: SUN Electronic Industries Corp.
    Inventors: Takashi TAKEZAWA, Masakazu HOSOGI, Hirokazu NISHIKORI
  • Publication number: 20230140448
    Abstract: A capacitor includes a capacitor element that holds a predetermined solution between an anode foil and a cathode foil wound up with a separator in between, a body case that is formed in the shape of a bottomed tube closed at one end with a wall and open at the other end to have an opening, a liquid supply sheet that is arranged between the inner face of the case and the outer face of the element, and a sealing member that seals the opening. The solution has a sealing member deterioration preventing agent dissolved in a lipophilic solvent. The sheet has an absorption portion that makes contact with the separator to absorb the solution and a supply portion that makes contact with the sealing member to supply it with the solution.
    Type: Application
    Filed: February 28, 2020
    Publication date: May 4, 2023
    Applicant: SUN Electronic Industries Corp.
    Inventors: Takashi TAKEZAWA, Masakazu HOSOGI
  • Publication number: 20220367123
    Abstract: A capacitor 1 includes a capacitor element 3 holding solution between an anode foil 5 and a cathode foil 7 that are wound up with a separator 6 in between, a body case 2 for housing the capacitor element 3, and a sealing member 4 for sealing the body case 2. A part of the separator 6 makes contact, at a plurality of points or over an area, with the face of the sealing member 4 facing the capacitor element 3 so as to rest on that face. The solution contains, dissolved in a lipophilic solvent, deterioration preventing agent that solidifies by oxidation. The solution is supplied through the separator 6 to the sealing member 4 and permeates the sealing member 4, so that a coating 17 resulting from the agent solidifying coats the outer face of the sealing member 4, leaving the solution present in the sealing member 4.
    Type: Application
    Filed: September 13, 2019
    Publication date: November 17, 2022
    Applicant: SUN Electronic Industries Corp.
    Inventors: Takashi TAKEZAWA, Masakazu HOSOGI, Hirokazu NISHIKORI
  • Publication number: 20220328255
    Abstract: A capacitor 1 includes a capacitor element 3 holding solution between an anode foil 5 and a cathode foil 7 that are wound up with a separator 6 in between, a body case 2 for housing the capacitor element 3, and a sealing member 4 for sealing the body case 2. A part of the separator 6 makes contact, at a plurality of points or over an area, with the face of the sealing member 4 facing the capacitor element 3 so as to rest on that face. The solution contains, dissolved in a lipophilic solvent, deterioration preventing agent that solidifies by oxidation. The solution is supplied through the separator 6 to the sealing member 4 and permeates the sealing member 4, so that a coating 17 resulting from the agent solidifying coats the outer face of the sealing member 4, leaving the solution present in the sealing member 4.
    Type: Application
    Filed: July 29, 2020
    Publication date: October 13, 2022
    Applicant: SUN Electronic Industries Corp.
    Inventors: Takashi TAKEZAWA, Masakazu HOSOGI, Hirokazu NISHIKORI
  • Patent number: 11380493
    Abstract: An electrolytic capacitor includes a capacitor element, a body case, and a sealing body. The capacitor element has a cathode foil and an anode foil wound up with a separator in between, and has a prescribed solution held between the cathode foil and the anode foil. The body case houses the capacitor element. The sealing body seals the body case. The solution is a fat-soluble antioxidant dissolved in a lypophilic solvent and the separator is configured to be in contact with the sealing body.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: July 5, 2022
    Assignee: SUN Electronic Industries Corp.
    Inventors: Takashi Takezawa, Masakazu Hosogi, Hajime Kimachi, Yuya Nagaike, Takahisa Adachi
  • Publication number: 20210327653
    Abstract: An electrolytic capacitor comprises: a capacitor element in which an anode foil and a cathode foil are wound, with a separator sandwiched therebetween, and a prescribed solution is held between the anode foil and the cathode foil; a body case housing the capacitor element; and a sealing member which seals the body case. The solution is a lipid-soluble antioxidant dissolved in a lypophilic solvent and the separator is configured to be in contact with the sealing member.
    Type: Application
    Filed: September 20, 2018
    Publication date: October 21, 2021
    Applicant: SUN Electronic Industries Corp.
    Inventors: Takashi TAKEZAWA, Masakazu HOSOGI, Hajime KIMACHI, Yuya NAGAIKE, Takahisa ADACHI
  • Publication number: 20090321010
    Abstract: To provide a balloon catheter having a flexible and highly expandable balloon so as to prevent the inner wall of the blood vessel from being damaged by the passage of the balloon. In a balloon catheter aimed to be stayed in a blood vessel and to be used mainly for the occlusion of a blood vessel, the balloon comprises a material selected from materials which have sufficient flexibility for preventing a blood vessel blocking operation from giving a damage to a vascular wall, have sufficient elasticity with its shrink characteristics when removing the catheter, and prevent a thrombus due to a direct contact to blood; and a maximum stretching of the material of said balloon in the state stayed in the blood vessel is defined so as to exceed a maximum stretching of said balloon itself.
    Type: Application
    Filed: July 29, 2009
    Publication date: December 31, 2009
    Applicant: Bi-SMEDIX INC.
    Inventors: Yosuke Yoshino, Masanori Kimura, Takashi Takezawa
  • Publication number: 20080136059
    Abstract: To provide a balloon catheter having a flexible and highly expandable balloon so as to prevent the inner wall of the blood vessel from being damaged by the passage of the balloon In a balloon catheter aimed to be stayed in a blood vessel and to be used mainly for the occlusion of a blood vessel, the balloon comprises a material selected from materials which have sufficient flexibility for preventing a blood vessel blocking operation from giving a damage to a vascular wall, have sufficient elasticity with its shrink characteristics when removing the catheter, and prevent a thrombus due to a direct contact to blood; and a maximum stretching of the material of said balloon in the state stayed in the blood vessel is defined so as to exceed a maximum stretching of said balloon itself.
    Type: Application
    Filed: November 21, 2007
    Publication date: June 12, 2008
    Applicant: Bi-SMEDIX INC.
    Inventors: Yosuke Yoshino, Masanori Kimura, Takashi Takezawa