Patents by Inventor Mitsuhisa Yoshimura

Mitsuhisa Yoshimura 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: 20220344105
    Abstract: An electrolytic capacitor includes a capacitor element, a liquid component, a case housing the capacitor element and the liquid component, and a sealing member sealing the case. the capacitor element includes a porous sintered body including a dielectric layer, a cathode foil facing at least a part of the porous sintered body, and a conductive polymer covering at least a part of a surface of the dielectric layer. The conductive polymer is in contact with the cathode foil. And a void in the capacitor element is impregnated with the liquid component.
    Type: Application
    Filed: July 7, 2022
    Publication date: October 27, 2022
    Inventors: YUICHIRO TSUBAKI, KAZUHIRO TAKATANI, MITSUHISA YOSHIMURA, MIYOKO MASUDA
  • Publication number: 20220262577
    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.
    Type: Application
    Filed: May 2, 2022
    Publication date: August 18, 2022
    Inventors: Mitsuhisa YOSHIMURA, Miwa OGAWA, Natsuyo SASADA, Tatsuji AOYAMA
  • Publication number: 20220148815
    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<P2<P3.
    Type: Application
    Filed: October 30, 2019
    Publication date: May 12, 2022
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Mitsuhisa YOSHIMURA, Shosuke NAKANO, Hiroshi YOSHIDA, Masami TSUBAKI, Naomi KURIHARA, Miwa OGAWA
  • Publication number: 20220115185
    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.
    Type: Application
    Filed: February 19, 2020
    Publication date: April 14, 2022
    Inventors: NAOMI KURIHARA, AKIHIRO YAMAGUCHI, MITSUHISA YOSHIMURA, MIWA OGAWA
  • Publication number: 20210366661
    Abstract: An electrode foil for an electrolytic capacitor includes a metal foil having a porous part, and a dielectric layer covering a surface of a metal framework constituting the porous part. The dielectric layer includes a first layer containing an oxide of a second metal different from a first metal contained in the metal framework. The first layer has a thickness T1. The first layer contains at least one kind of additive element selected from the group consisting of carbon, phosphorus, boron, and nitrogen. The first layer includes a first region from an outer surface of the first layer to a center of the first layer in a thickness direction, and a second region from the center to an inner surface of the first layer. A content of the at least one kind of additive element in the second region is greater than a content of the at least one kind of additive element in the first region.
    Type: Application
    Filed: August 9, 2021
    Publication date: November 25, 2021
    Inventors: MITSUHISA YOSHIMURA, NAOMI KURIHARA, MIWA OGAWA, YASUHIRO TSUDA
  • Publication number: 20210366660
    Abstract: An electrode foil for an electrolytic capacitor includes an anode body foil having a porous part, and a dielectric layer covering a surface of a metal framework constituting the porous part. The dielectric layer includes a first layer containing an oxide of a second metal, the second metal being different from a first metal contained in the metal framework. An underlayer that is continuous with the first layer is provided between the metal framework and the first layer. The underlayer contains phosphorus and carbon.
    Type: Application
    Filed: August 6, 2021
    Publication date: November 25, 2021
    Inventors: MIWA OGAWA, NAOMI KURIHARA, MITSUHISA YOSHIMURA
  • Publication number: 20200373090
    Abstract: An electrode foil for an electrolytic capacitor includes an anode electrode body including a base material part having a porous body portion, and a dielectric layer disposed on a surface of the porous body portion. The anode electrode body has a first main surface in which pores of the porous body portion are opened, a second main surface opposite to the first main surface, and an end surface connecting the first main surface and the second main surface. In the porous body portion, a first film thickness of the dielectric layer in an end surface vicinity region is larger than a second film thickness of the dielectric layer in a deep inner region, the end surface vicinity region being a region within a predetermined distance from the end surface, the deep inner region being a region located away from the first main surface and at a central portion in a direction parallel to the first main surface.
    Type: Application
    Filed: August 4, 2020
    Publication date: November 26, 2020
    Inventors: MITSUHISA YOSHIMURA, TATSUJI AOYAMA, NAOMI KURIHARA, MIWA OGAWA
  • Patent number: 10655241
    Abstract: A method for producing an electrode foil includes an electrolytic etching step of etching a metal foil containing first metal by applying current between the metal foil and an electrode in etching liquid while a principal surface of the metal foil faces the electrode. A masking member is disposed between the principal surface of the metal foil and the electrode so as to cover a partial region of the principal surface. The masking member is an electric conductor. The masking member is electrically connected with the metal foil.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: May 19, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kyohei Kobayashi, Yukiyasu Sugihara, Hiroshi Yoshida, Mitsuhisa Yoshimura, Hiromi Nakanishi
  • Patent number: 10607787
    Abstract: A method for producing an electrode foil includes: a first step of preparing a metal foil, the metal foil having a strip shape; a second step of disposing a masking member so as to cover part of a principal surface of the metal foil; and a third step of partially etching the principal surface of the metal foil by applying current between the metal foil and an electrode while the metal foil faces the electrode via the masking member in etching liquid after the second step. The masking member has a strip shape. In the second step, the masking member is disposed along a longitudinal direction of the metal foil so as to be separated from both side edges of the metal foil.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: March 31, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kyohei Kobayashi, Yukiyasu Sugihara, Hiroshi Yoshida, Mitsuhisa Yoshimura, Hiromi Nakanishi
  • Publication number: 20180261393
    Abstract: A method for producing an electrode foil includes: a first step of preparing a metal foil, the metal foil having a strip shape; a second step of disposing a masking member so as to cover part of a principal surface of the metal foil; and a third step of partially etching the principal surface of the metal foil by applying current between the metal foil and an electrode while the metal foil faces the electrode via the masking member in etching liquid after the second step. The masking member has a strip shape. In the second step, the masking member is disposed along a longitudinal direction of the metal foil so as to be separated from both side edges of the metal foil.
    Type: Application
    Filed: May 16, 2018
    Publication date: September 13, 2018
    Inventors: KYOHEI KOBAYASHI, YUKIYASU SUGIHARA, HIROSHI YOSHIDA, MITSUHISA YOSHIMURA, HIROMI NAKANISHI
  • Publication number: 20180258548
    Abstract: A method for producing an electrode foil includes an electrolytic etching step of etching a metal foil containing first metal by applying current between the metal foil and an electrode in etching liquid while a principal surface of the metal foil faces the electrode. A masking member is disposed between the principal surface of the metal foil and the electrode so as to cover a partial region of the principal surface. The masking member is an electric conductor. The masking member is electrically connected with the metal foil.
    Type: Application
    Filed: May 15, 2018
    Publication date: September 13, 2018
    Inventors: KYOHEI KOBAYASHI, YUKIYASU SUGIHARA, HIROSHI YOSHIDA, MITSUHISA YOSHIMURA, HIROMI NAKANISHI
  • Patent number: 9048027
    Abstract: A fluid dispersion obtained by mixing oxide particles and water is sprayed to a raw aluminum foil from a direction opposite to a travelling direction of the raw aluminum foil while the raw aluminum foil is allowed to travel. In this way, a roll-pressed mark of the raw aluminum foil is eliminated, and thus aluminum foil for aluminum electrolytic capacitor electrode is produced. Pyramidal-shaped recesses each having an acute angle tip are present all over a surface of the aluminum foil.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: June 2, 2015
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masami Tsubaki, Mitsuhisa Yoshimura, Hayato Kato, Katsuyoshi Shingu, Tatsushi Ota, Kazuo Fujiwara
  • Publication number: 20130326849
    Abstract: A fluid dispersion obtained by mixing oxide particles and water is sprayed to a raw aluminum foil from a direction opposite to a travelling direction of the raw aluminum foil while the raw aluminum foil is allowed to travel. In this way, a roll-pressed mark of the raw aluminum foil is eliminated, and thus aluminum foil for aluminum electrolytic capacitor electrode is produced. Pyramidal-shaped recesses each having an acute angle tip are present all over a surface of the aluminum foil.
    Type: Application
    Filed: August 14, 2013
    Publication date: December 12, 2013
    Applicant: Panasonic Corporation
    Inventors: Masami Tsubaki, Mitsuhisa Yoshimura, Hayato Kato, Katsuyoshi Shingu, Tatsushi Ota, Kazuo Fujiwara
  • Publication number: 20110159312
    Abstract: A fluid dispersion obtained by mixing oxide particles and water is sprayed to a raw aluminum foil from a direction opposite to a travelling direction of the raw aluminum foil while the raw aluminum foil is allowed to travel. In this way, a roll-pressed mark of the raw aluminum foil is eliminated, and thus aluminum foil for aluminum electrolytic capacitor electrode is produced. Pyramidal-shaped recesses each having an acute angle tip are present all over a surface of the aluminum foil.
    Type: Application
    Filed: November 23, 2010
    Publication date: June 30, 2011
    Applicant: PANASONIC CORPORATION
    Inventors: Masami Tsubaki, Mitsuhisa Yoshimura, Hayato Kato, Katsuyoshi Shingu, Tatsushi Ota, Kazuo Fujiwara
  • Patent number: 7312953
    Abstract: A head suspension assembly includes a head, a load beam carrying the head at one end, a resilient member joining the load beam and a carriage, and a pivot bearing provided between the load beam and the carriage and structured so that the load beam is movable in a direction perpendicular to a record medium so that the load beam rocks. The head suspension assembly is structured so that the resilient member has narrow sections for reducing the width of the resilient member to a width smaller than that of both ends of the resilient member that are symmetrical with respect to a centerline of the resilient member. The distal end of the resilient member is joined to the carriage and the resilient member has an opening (hole) in the center thereof. This structure provides a highly shock-resistant and thin head suspension assembly.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: December 25, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hideki Kuwajima, Zhisheng Deng, Hideyuki Hashi, Mitsuhisa Yoshimura
  • Patent number: 7218479
    Abstract: The disclosed suspension assembly (S) for carrying a magnetic recording head in close following relation to a recording disc includes an improved arrangement for supplying a load to the recording head. The suspension assembly (S) includes a flexible gimbal section (10a) for mounting the recording head and accommodating dampened pitch, roll and transverse movements. The head load arrangement comprises a flexible cantilevered spring tongue (10b) and an elongate rigid load member (20) that extends from the free end of the spring tongue to contact the suspension assembly (S) adjacent the recording head. The load member (20) is configured to cause the spring tongue (10b) to resiliently deflect by a predetermined amount, resulting in a predetermined head load being supplied through the load member to the recording head.
    Type: Grant
    Filed: August 5, 2003
    Date of Patent: May 15, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hideki Kuwajima, Hideyuki Hashi, Mitsuhisa Yoshimura
  • Publication number: 20070086113
    Abstract: A head suspension assembly includes (a) a head, (b) a load beam carrying the head at one end, (c) a resilient member joining the load beam and a carriage, and (d) a pivot bearing provided between the load beam and the carriage and structured so that the load beam is movable in a direction perpendicular to a record medium, wherein the load beam rocks on fulcrums of respective apexes of two pivots provided on at least one of the carriage and the load beam against resilient member of the load beam joined to the carriage. The head suspension assembly is structured so that the resilient member has narrow sections for reducing the width of the resilient member to a width smaller than that of the joint between the load beam and the carriage. The distal end of the resilient member is joined to the carriage and the resilient member has an opening (hole) in the center thereof.
    Type: Application
    Filed: December 19, 2006
    Publication date: April 19, 2007
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Hideki KUWAJIMA, Zhisheng DENG, Hideyuki HASHI, Mitsuhisa YOSHIMURA
  • Patent number: 7170717
    Abstract: A head suspension assembly includes (a) a slider having a head for recording into/reproducing from a record medium, mounted thereon, (b) a load beam having (i) the slider disposed via a flexure at one end, and (ii) a leaf-spring-like resilient member integrally formed therewith in the vicinity of the other end along the longitudinal centerline thereof, and (c) a carriage having a pair of pivots in contact with the load beam. The distal end of the resilient member is joined to the carriage and the resilient member has an opening (hole) in the center thereof. Because the stress occurring in the leaf-spring-like resilient member that is provided in the load beam of the head suspension assembly is reduced, the resilient member exerts sufficient urging force to the head and has high flexibility. This structure can provide a highly shock-resistant and thin head suspension assembly.
    Type: Grant
    Filed: August 8, 2003
    Date of Patent: January 30, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hideki Kuwajima, Zhisheng Deng, Hideyuki Hashi, Mitsuhisa Yoshimura
  • Publication number: 20050018358
    Abstract: The disclosed suspension assembly (S) for carrying a magnetic recording head in close following relation to a recording disc includes an improved arrangement for supplying a load to the recording head. The suspension assembly (S) includes a flexible gimbal section (10a) for mounting the recording head and accommodating dampened pitch, roll and transverse movements. The head load arrangement comprises a flexible cantilevered spring tongue (10b) and an elongate rigid load member (20) that extends from the free end of the spring tongue to contact the suspension assembly (S) adjacent the recording head. The load member (20) is configured to cause the spring tongue (10b) to resiliently deflect by a predetermined amount, resulting in a predetermined head load being supplied through the load member to the recording head.
    Type: Application
    Filed: August 5, 2003
    Publication date: January 27, 2005
    Inventors: Hideki Kuwajima, Hideyuki Hashi, Mitsuhisa Yoshimura
  • Patent number: 6726825
    Abstract: A method of manufacturing a positive electrode foil of an aluminum electrolytic capacitor is provided in which anodizing conditions are optimally determined and automatically set to minimize the loss of production and to produce a constant quality of the positive electrode foil. The method comprises an etching process and an anodizing process. An etched foil produced in the etching process is subjected to a constant current inspection, and then, the anodizing conditions are determined from the result of the constant current inspection. The anodizing conditions are transferred to a control panel in the anodizing process where they are automatically registered as its settings. Also, an apparatus for manufacturing the positive electrode foil is provided which has a voltage sensor connected between an output running roller and cathode electrodes in an anodizing tank. A voltage measured by the voltage sensor is fed back to a direct-current source for controlling its output voltage.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: April 27, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Mitsuhisa Yoshimura, Kazuaki Nakanishi, Kenji Yoshida, Seita Takahashi, Hiroyuki Nakano, Naomi Kurihara, Katsuyuki Nakamura, Masanori Okabayashi, Takahiro Suzuki