With Lead Conductor Patents (Class 361/531)
  • Patent number: 11342128
    Abstract: The electrolytic capacitor has a conductive sheet with a central portion defined by a peripheral edge, a first tail extending out from the peripheral edge in a first direction, and a second tail extending out from the peripheral edge in a second direction. The second direction is opposite the first direction. The first tail and the second tail each have a free end with a first recess at the free.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: May 24, 2022
    Assignee: Pacesetter, Inc.
    Inventors: Troy McCurry, Peter J. Fernstrom, Ralph Jason Hemphill
  • Patent number: 11062852
    Abstract: A solid electrolytic capacitor includes a porous sintered body, a metal lead, a dielectric layer, a solid electrolyte layer, a first terminal, and a second terminal. The porous sintered body has a pair of main faces opposed to each other, a pair of side faces opposed to each other, and a pair of end faces opposed to each other. The metal lead is extended from one of the pair of main faces. The first terminal includes a first terminal mounting part extending in substantially parallel to each of the pair of side faces, and a pair of arm parts extending in substantially parallel to each of the pair of end faces. The pair of arm parts are opposed to each other. The second terminal includes a terminal connecting part electrically connected to the solid electrolyte layer. The metal lead is electrically connected to each of the pair of arm parts.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: July 13, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Akinari Kurokawa, Norihiko Ogata
  • Patent number: 9443663
    Abstract: The present application provides an electric double-layer capacitor capable of reducing an internal resistance without exerting a large stress on a positive electrode body, a negative electrode body, and separators. The electric double-layer capacitor according to the present invention is obtained by housing a capacitor element impregnated with an electrolytic solution in a case. The capacitor element is obtained by stacking and winding a positive electrode body, separators, and a negative electrode body. The positive electrode body has positive electrode current collector tabs fixed on positive electrode current collectors. The negative electrode body has negative electrode current collector tabs fixed on negative electrode current collectors. The paired positive electrode current collector tab are displaced from each other and the paired negative electrode tabs are displaced from each other in a state where the positive electrode body and the negative electrode body are not wound.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: September 13, 2016
    Assignee: NICHICON CORPORATION
    Inventor: Katsunori Yokoshima
  • Patent number: 9054500
    Abstract: A plasma power limiter fabricated using wafer-level fabrication techniques with other circuit elements. The plasma limiter includes a signal substrate and a trigger substrate defining a hermetically sealed cavity therebetween in which is encapsulated an ionizable gas. The signal substrate includes a signal line within the cavity and the trigger substrate includes at least one trigger probe extending from the trigger substrate towards the transmission line. If a signal propagating on the transmission line exceeds a power threshold, the gas within the cavity is ionized creating a conduction path between the transmission line and the trigger probe that draws off the high power current.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: June 9, 2015
    Assignee: Northrop Grumman Systems Corporation
    Inventors: Patty Chang-Chien, Kelly Jill Hennig, Xianglin Zeng, Jeffrey M. Yang
  • Publication number: 20140268503
    Abstract: A winding-type solid electrolytic capacitor package structure without using any lead frame includes a winding capacitor and a package body. The winding capacitor has a winding body enclosed by the package body, a positive conductive lead pin extended from a first lateral side of the winding body, and a negative conductive lead pin extended from a second lateral side of the winding body. The positive conductive lead pin has a first embedded portion enclosed by the package body and a first exposed portion exposed outside the package body and extended along the first lateral surface and the bottom surface of the package body. The negative conductive lead pin has a second embedded portion enclosed by the package body and a second exposed portion exposed outside the package body and extended along the second lateral surface and the bottom surface of the package body.
    Type: Application
    Filed: March 18, 2013
    Publication date: September 18, 2014
    Applicant: APAQ TECHNOLOGY CO., LTD.
    Inventors: MING-TSUNG CHEN, CHING-FENG LIN
  • Patent number: 8787002
    Abstract: A winding-type solid electrolytic capacitor package structure includes a capacitor unit, a package unit and a conductive unit. The conductive unit includes a winding-type capacitor having a first conductive pin and a second conductive pin. The package unit includes a package body for enclosing the capacitor unit. The conductive unit includes a first conductive terminal electrically connected to the first conductive pin and a second conductive terminal electrically connected to the second conductive pin. The first conductive terminal has a first embedded portion contacting the first conductive pin and enclosed by the package body and a first exposed portion connected to the first embedded portion and exposed from the package body. The second conductive terminal has a second embedded portion contacting the second conductive pin and enclosed by the package body and a second exposed portion connected to the second embedded portion and exposed from the package body.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: July 22, 2014
    Assignee: Apaq Technology Co., Ltd.
    Inventors: Ching-Feng Lin, Chi-Hao Chiu, Kun-Huang Chang
  • Patent number: 8673476
    Abstract: Disclosed herein is a stacking or stacking/folding type electrode assembly of a cathode/separator/anode structure, wherein the electrode assembly is constructed in a structure in which tabs (electrode tabs), having no active material applied thereto, protrude from electrode plates constituting the electrode assembly, electrode leads are located at one-side ends of the stacked electrode tabs such that the electrode leads are electrically connected to the electrode tabs, and the electrode leads, joined to the electrode tabs, have rounded ends. An electrochemical cell including the electrode assembly is also disclosed.
    Type: Grant
    Filed: July 14, 2007
    Date of Patent: March 18, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Ji Heon Ryu, Jeong Hee Choi, Kwangho Yoo, Youngjoon Shin
  • Patent number: 8400757
    Abstract: A one-side pressed terminal is applied as a first anode (cathode) lead tab terminal and the one-side pressed terminal is connected to an anode (a cathode) foil in such a manner that a position in a radial direction of a lead is shifted inward after winding. A one-side pressed terminal is applied as a second anode (cathode) lead tab terminal and the one-side pressed terminal is connected to the anode (cathode) foil in such a manner that a position in the radial direction of a lead is shifted inward after winding. Thus, while retaining characteristics as an electrolytic capacitor, connection of the anode (cathode) lead tab terminal to the anode (cathode) foil can be achieved in a stable manner.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: March 19, 2013
    Assignees: SANYO Electric Co., Ltd., SAGA SANYO INDUSTRIES Co., Ltd.
    Inventor: Kazumasa Fujimoto
  • Patent number: 8373973
    Abstract: A capacitor includes a main body, a first seat, and a second seat. The main body includes a first end surface and a second end surface opposite to the first end surface. Two first pins extend upward from the first end surface. Two second pins extend downward from the second end surface. The first pins electrically connect the second pins. The first seat includes a first substrate and two first pads, the first seat is positioned on the second end surface of the main body and the first pads are electrically connected to the second pins. The second seat includes a second substrate and two second pads, the second seat is positioned on the first end surface of the main body and the second pads are electrically connected to the first pins.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: February 12, 2013
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Chun-An Lai
  • Publication number: 20120236470
    Abstract: An electrolytic capacitor comprises a wound body including a wound anode foil with a surface on which a dielectric layer is formed, a solid electrolyte layer formed on a surface of the dielectric layer, a cathode layer formed on a surface of the solid electrolyte layer over the outer circumference of the wound body, a plurality of anode leads electrically connected to the anode foil, and a plurality of cathode leads provided in one-to-one relationship with the anode leads and electrically connected to the cathode layer. The edge surface is a part of the surface of the wound body and crosses the winding axis of the wound body. Each of the cathode leads is electrically connected to an outer circumference of the cathode layer at a position near an anode lead corresponding to this cathode lead.
    Type: Application
    Filed: September 27, 2010
    Publication date: September 20, 2012
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventor: Hideki Ishida
  • Patent number: 8081419
    Abstract: An anode assembly for a capacitor is described. The anode assembly comprises a first anode including a first conductive lead disposed in a first groove in a junction bar, a second anode including a second conductive lead disposed in a second groove in the junction bar, and an anode terminal lead disposed in a third groove in the junction bar. The capacitor including the anode assembly is further comprised of a cathode comprising a conductive substrate supporting a cathode active material facing the first and second anodes, and a separator positioned there between to prevent the first and second anodes and the cathode from contacting each other. The anode assembly, the cathode, and the separator are sealed inside of a casing, and the casing is filled with a working electrolyte.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: December 20, 2011
    Assignee: Greatbatch Ltd.
    Inventors: Donald Monroe, Kent Hughes, Anthony Perez, J. Michael Druding, Shawn Patterson
  • Patent number: 8066783
    Abstract: A solid electrolytic capacitor of the present invention includes an anode element made of a sintered body of a valve-action metal; a dielectric coating, a solid electrolyte layer, and a cathode lead layer, sequentially formed on a surface of the anode element; and an anode lead member made of a conductive metal projecting from the anode element, the anode lead member having a base end thereof embedded in the anode element, the base end being formed such that a cross section thereof perpendicular to a direction extending inwardly of the anode element has a contour with four rounded rectangular corners.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: November 29, 2011
    Assignee: SANYO Electric Co., Ltd.
    Inventor: Yasushi Takeda
  • Patent number: 8059390
    Abstract: To provide an electrolytic capacitor having lead wires excellent in weldability with a boss member made of aluminum, excellent in solder wettability, and less whisker. The lead wires have a nickel plating layer in a thickness of 0.3 to 5.0 ?m, a palladium plating layer in a thickness of 0.01 to 0.10 ?m, and a gold plating layer in a thickness of 0.002 to 0.030 ?m.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: November 15, 2011
    Assignees: Sanyo Electric Co., Ltd, Saga Sanyo Industries Co., Ltd, Furukawa Precision Engineering Co., Ltd
    Inventors: Daisuke Manago, Shinji Kodera, Hitoshi Ibuta, Kunio Shibata
  • Patent number: 8023251
    Abstract: A hybrid energy storage device includes at least one cell comprising at least one positive electrode, at least one negative electrode, a separator placed between said at least one positive and said at least one negative electrode, and an electrolyte. The at least one positive electrode comprises an active material comprising lead and a tab extending from a side of the at least one positive electrode. The at least one negative electrode comprises an activated carbon material, a tab extending from a side of the at least one negative electrode, and a lead lug encapsulating said tab. A first cast-on lead strap is on the tab extending from said at least one positive electrode. A second cast-on lead strap is on the lead lug of the at least one negative electrode.
    Type: Grant
    Filed: October 22, 2007
    Date of Patent: September 20, 2011
    Assignee: Axion Power International, Inc.
    Inventors: Edward Buiel, Victor Eshkenazi, Leonid Rabinovich, Wei Sun, Vladimir Vichnyakov, Adam Swiecki, Joseph Cole
  • Patent number: 8018713
    Abstract: Anodized films are formed at both surfaces of an aluminum base and, at the center portion on each side of the aluminum base, a solid electrolyte layer of a conductive polymer, a graphite layer, and a metal layer are stacked in the order, thereby forming a rectangular cathode portion. An insulator layer is formed at the peripheries of four sides of the cathode portion and, further, an anode lead frame is provided at the peripheries of four sides of the upper insulator layer, thereby forming an anode portion. Openings are formed at four corners of the insulator layer or the anode portion, thereby establishing electrical connection between the cathode portions on both sides of the aluminum base. By setting the ratio of a total region, occupied by the openings, of the cathode portion to 25% or less, the ESL of a capacitor can be suppressed low even when the openings are provided.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: September 13, 2011
    Assignee: NEC Tokin Corporation
    Inventors: Yuji Yoshida, Katsuhiro Yoshida, Takeo Kasuga, Masanori Takahashi, Takeshi Saito, Koji Sakata
  • Publication number: 20110157778
    Abstract: A one-side pressed terminal is applied as a first anode (cathode) lead tab terminal and the one-side pressed terminal is connected to an anode (a cathode) foil in such a manner that a position in a radial direction of a lead is shifted inward after winding. A one-side pressed terminal is applied as a second anode (cathode) lead tab terminal and the one-side pressed terminal is connected to the anode (cathode) foil in such a manner that a position in the radial direction of a lead is shifted inward after winding. Thus, while retaining characteristics as an electrolytic capacitor, connection of the anode (cathode) lead tab terminal to the anode (cathode) foil can be achieved in a stable manner.
    Type: Application
    Filed: December 27, 2010
    Publication date: June 30, 2011
    Applicants: SANYO ELECTRIC CO., LTD., SAGA SANYO INDUSTRIES CO., LTD.
    Inventor: Kazumasa Fujimoto
  • Publication number: 20090316337
    Abstract: To provide an electrolytic capacitor having lead wires excellent in weldability with a boss member made of aluminum, excellent in solder wettability, and less whisker. The lead wires have a nickel plating layer in a thickness of 0.3 to 5.0 ?m, a palladium plating layer in a thickness of 0.01 to 0.10 ?m, and a gold plating layer in a thickness of 0.002 to 0.030 ?m.
    Type: Application
    Filed: June 16, 2009
    Publication date: December 24, 2009
    Applicants: SANYO ELECTRIC CO., LTD, SAGA SANYO Industries Co., Ltd., FURUKAWA PRECISION ENGINEERING CO., LTD
    Inventors: Daisuke Manago, Shinji Kodera, Hitoshi Ibuta, Kunio Shibata
  • Patent number: 7619875
    Abstract: Provided is a solid electrolytic capacitor including a capacitor element with a positive polarity; an anode wire inserted and connected to a lower portion of the capacitor element; a cathode extraction layer formed on the capacitor element; an anode lead frame provided on one side of the lower surface of the capacitor element so as to be electrically insulated from the cathode extraction layer, the anode lead frame having an insertion portion into which a projecting lower portion of the anode wire is inserted; a cathode lead frame provided on the other side of the lower surface of the capacitor element so as to be electrically connected to the cathode extraction layer; a molding portion formed to surround the capacitor element and exposing the lower end surface of the anode wire, the lower surface of the anode lead frame, and the lower surface of the cathode lead frame; an anode lead terminal provided on the molding portion so as to be electrically connected to the lower end surface of the anode wire and the
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: November 17, 2009
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hee Sung Choi, Seoung Jae Lee, Yeoung Jin Lee, Sung Han Won, Ha Yong Jung, Hyun Ho Shin, Jung Tae Park, Jae Youn Jeong
  • Patent number: 7573699
    Abstract: A solid electrolytic capacitor, including a stack of solid electrolytic capacitor elements each having an anode part and a cathode part. The stacked structure is such that cathode parts of solid electrolytic capacitor elements are stacked one on another to have some misalignment between the stacked elements. The capacitor preferably has a structure in which one end part of the cathode part of at least one of the solid electrolytic capacitor elements stacked on another element is more prominent or retracted than that of the element below.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: August 11, 2009
    Assignee: Showa Denko K.K.
    Inventor: Tomoya Utashiro
  • Patent number: 7481849
    Abstract: An electric appliance comprises a component part (101) that comprises electronic components, among which is an electrolytic capacitor (105). A molded part (301) is molded around the component part (101), An outer surface of the molded part (301) constitutes at least a part of the outer surface of the electric appliance. The molded part comprises a cavity (302), which contains something else than electronic components or connections between electronic components. The cavity (302) is separated from the electrolytic capacitor (105) by at most a wall the thickness of which is smaller than a mean material thickness of the molded part (301) between the component part (101) and outside of the electric appliance.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: January 27, 2009
    Assignee: Salcomp Oy
    Inventors: Mikko Lehtonen, Marko Hagström
  • Patent number: 7377947
    Abstract: The invention relates to a process for the production of electrolyte capacitors having a low equivalent series resistance and low residual current, and which comprise a solid electrolyte of conductive polymers and an outer layer comprising conductive polymers applied in the form of a dispersion. Electrolyte capacitors produced by this process and the use of such electrolyte capacitors are also provided.
    Type: Grant
    Filed: April 10, 2006
    Date of Patent: May 27, 2008
    Assignee: H.C. Starck GmbH
    Inventors: Udo Merker, Klaus Wussow, Friedrich Jonas
  • Patent number: 7233485
    Abstract: A solid electrolytic capacitor includes: a capacitor element including an anode made of a valve metal having an oxide film formed on a surface thereof, a cathode provided with a valve metal, and a separator provided between the anode and the cathode, the anode and the cathode and the separator being wound around together; a solid electrolyte interposed between the anode and the cathode; an anode lead tab having an oxide film formed on a surface thereof and being fixed to the anode; and a cathode lead tab fixed to the cathode. The oxide film of the anode lead tab has a portion the thickness of which is equal to or greater than 75% but less than 100% of the thickness of the oxide film of the anode.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: June 19, 2007
    Assignees: Sanyo Electric Co., Ltd., Saga Sanyo Industries Co., Ltd.
    Inventors: Kazumasa Fujimoto, Sachiko Yoshino
  • Patent number: 7177141
    Abstract: The present invention provides a solid electrolytic capacitor with low leakage current. In the solid electrolytic capacitor, an anode has an anode lead made of tantalum, a surface layer made of niobium formed on the anode lead, and a rectangular block shaped base body having a porous sintered body made from niobium particles, and the anode lead is partially embedded in the base body. Onto the anode, an oxide layer made of niobium oxide, an electrically conductive polymer layer, and a cathode laminated with a first electrically conductive layer and a second electrically conductive layer are sequentially laminated. Onto the top surface of an area surrounding the cathode, a cathode terminal is formed through an electrically conductive adhesive layer. Also, an anode terminal is connected onto an edge of the anode lead.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: February 13, 2007
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Takahisa Iida, Mutsumi Yano, Mamoru Kimoto
  • Patent number: 7108729
    Abstract: A solid electrolyte capacitor includes a capacitor element, an anode lead, and a cathode lead. The capacitor element includes a capacitor chip, an anode wire projecting from the capacitor chip, and a cathode electrode formed on outer surfaces of the capacitor chip. The anode lead is electrically connected to the anode wire, whereas the cathode lead is electrically connected to the cathode electrode. A method for making such a solid electrolyte capacitor includes a laser irradiation step for irradiating the anode wire with a laser beam, and a connection step for connecting the anode wire with the anode lead after the laser irradiation step.
    Type: Grant
    Filed: December 2, 2002
    Date of Patent: September 19, 2006
    Assignee: Rohm Co., Ltd.
    Inventor: Yasuo Kanetake
  • Patent number: 7072172
    Abstract: A solid electrolytic capacitor includes a capacitor element in which an anode lead protrudes from one end of an anode member. An anode lead frame is attached to the anode lead by welding. A contact resistance enlarging portion is formed on a junction face of the anode lead frame with the anode lead, the area over which the anode lead frame comes into contact with the anode lead being smaller than the portion other than the junction face.
    Type: Grant
    Filed: September 14, 2004
    Date of Patent: July 4, 2006
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Kazuhiro Kato, Kenichiro Matsuzaki
  • Patent number: 6972943
    Abstract: An electronic component has a lead frame attached to an element with a conductive adhesive. The lead frame has one of a hole, cavity, cutout and groove filled with the adhesive. The lead frame may be provided with a plurality of grooves intersecting one another and divided into frame segments by the grooves.
    Type: Grant
    Filed: December 3, 2003
    Date of Patent: December 6, 2005
    Assignees: Sanyo Electric Co., Ltd., Sanyo Electronic Components Co., Ltd.
    Inventors: Kazuhiro Kato, Masaaki Kido, Yasuko Suma
  • Patent number: 6903921
    Abstract: In a chip-type solid electrolytic capacitor including a capacitor element, anode terminal and cathode terminal are electrically connected to the capacitor element. A casing resin covers the capacitor element and the anode and cathode terminals. Each of the anode and cathode terminals has a bottom mount surface to be mounted on a circuit board and an exposed surface substantially perpendicular to the bottom mount surface and exposed at a side surface of the casing resin. Each of the exposed surfaces is subjected to plating to have a plated portion.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: June 7, 2005
    Assignees: NEC Tokin Corporation, NEC Tokin Toyama, Ltd.
    Inventor: Masami Ishijima
  • Patent number: 6661645
    Abstract: A solid electrolytic capacitor comprising a capacitor element comprising a valve-acting metal substrate having on the surface thereof a dielectric film and a solid electrolytic layer provided on the dielectric film, the capacitor element provided with lead wires (lead frames), in which the bonding structure between the capacitor element and the lead frames is improved. The solid electrolytic capacitor has high strength at the bonded portion between the capacitor element and the lead frames and has excellent heat resistance and is highly reliable. Also, a method for manufacturing such a solid electrolytic capacitor is disclosed.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: December 9, 2003
    Assignee: Showa Denko K.K.
    Inventors: Atsushi Sakai, Takashi Ichimura, Hiroshi Nitoh, Naoki Kawamura
  • Patent number: 6563693
    Abstract: A solid electrolytic capacitor includes a capacitor element including a capacitance forming portion; an encapsulating resin with which the capacitance forming portion is coated; an anode terminal and a cathode terminal that are provided such that at least a part thereof is outside the encapsulating resin; and a lead. The capacitor element includes an anode, and a dielectric layer and a solid electrolytic layer that are laminated on a portion of the anode in this order. The lead is electrically connected to the solid electrolytic layer. The surface of at least one component selected from the anode and the lead has roughness in at least one connection portion selected from a connection portion between the anode and the anode terminal and a connection portion between the lead and the cathode terminal.
    Type: Grant
    Filed: July 2, 2002
    Date of Patent: May 13, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yasuhiko Nakada, Mikinari Shimada, Tsunenori Yoshida, Kanji Katou
  • Patent number: 6493214
    Abstract: An anode lead (11) is embedded at one end thereof in a sintered body in a capacitor element (1), and is welded at the other end thereof to a first outside lead (2). A cathode (12) is electrically connected to a second outside lead (3). The capacitor element is covered with a resin, thereby forming a resin package (5). The tip end of the first outside lead, to which the other end of the anode lead 11 is welded, is configured in such a manner as to have a capacity greater than those of other portions of the first outside lead: namely, the tip end of the first outside lead is widened or thickened in such a manner as to increase the volume of the first outside lead per unit length. Thus, it is possible to provide a solid electrolytic capacitor having the structure in which inclination of the welded portion of the anode lead can be eliminated or the welding reliability of the anode lead can be enhanced without reducing the size of the sintered body in the capacitor element or increasing the size of the package.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: December 10, 2002
    Assignee: Rohm Co., Ltd.
    Inventors: Yasuo Kanetake, Makoto Aoyama
  • Patent number: 6454817
    Abstract: Disclosed is a method for manufacturing a solid electrolytic capacitor using a functional polymer composition. The method comprises immersing the rolled aluminum electrolytic capacitor device in polyaniline solution with high electric conductivity to impregnate the device with polyaniline, drying the impregnated device in a drying oven which is maintained at constant temperature to fully remove the solvent, inserting the dried device to a capacitor aluminum can and then sealing with epoxy resin, to manufacture a solid electrolytic capacitor using a functional polymer. As such, the impregnation can be performed well at not only normal temperature and pressure, but also high temperature and reduced pressure. The solid electrolytic capacitor has the advantages of high capacity, low impedance and low ESR, and also, low manufacturing cost, simple processes and high reliability.
    Type: Grant
    Filed: May 22, 2001
    Date of Patent: September 24, 2002
    Assignee: Samwha Electric Co., Ltd.
    Inventors: Dal-Woo Shin, Jong-Joo Park, Young-Hoon Lee, Yong-Chul Kim, Sung-Ho Kim
  • Patent number: 6423103
    Abstract: First, an anode lead is led out of an anode member. Next, a dielectric film is formed at a surface of the anode member by anodic oxidation to form a capacitor element. Thereafter, a water-repellent agent is applied on a predetermined position of the anode lead. In succession, the capacitor element is immersed in an oxidant solution of a mixture solvent of alcohol and water, followed by drying. The capacitor element is then immersed in an alcoholic solution of a conductive polymeric monomer to polymerize a conductive polymer electrolyte on a surface of the capacitor element by chemical oxidation.
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: July 23, 2002
    Assignee: NEC Tokin Toyama, Ltd.
    Inventors: Kenji Araki, Yuuji Aoki, Daisuke Takada, Kenichi Takahashi
  • Patent number: 6411499
    Abstract: A capacitor includes a pellet molded within a protective material and having a cathode termination surface at one end and an anode wire extending from the other end. The cathode termination surface is centered with respect to the longitudinal axis of the capacitor. The method includes centering the pellet body and a tear drop shaped conductive cathode element within a mold and molding a protective coating around them. After the molding is complete a portion of the tear drop shaped member is removed to create a cathode termination.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: June 25, 2002
    Assignee: Vishay Sprague, Inc.
    Inventors: Tibor Kormendy, Michel J. Richard, John Y. Cadwallader, Kyle E. Clark
  • Patent number: 5963418
    Abstract: A multiple anode capacitor (10) having offset terminal leads or strips which maximizes capacitance achieved per volume occupied by the capacitor. More specifically, the invention including a multiple anode aluminum electrolytic capacitor including a cylindrical casing (42), a header (45) crimped to the open end of the casing, the header including a primary anode terminal (41) and a primary cathode terminal (44). Disposed within the casing is a wound or coiled capacitor body (28) having plural anode foils (11, 12, 13), a capacitor foil (14), and dielectric paper separator layers (15, 16) disposed between the cathode and the anodes. In a preferred embodiment, three juxtapositioned anode foils are used, the foils being made from a high purity porous aluminum foil. In addition, each of the dielectric paper separator layers is formed of two kraft capacitor tissue papers (15a, 15b, 16a, 16b).
    Type: Grant
    Filed: March 18, 1998
    Date of Patent: October 5, 1999
    Assignee: CM Components, Inc.
    Inventors: John M. Greenwood, Jr., Van Ness Harwood, Jr., Oakland J. Weatherup
  • Patent number: 5959831
    Abstract: A capacitor element for a solid electrolytic capacitor includes a capacitor chip which is a compacted mass of valve metal powder, and an anode wire projecting from an end face of the capacitor chip. The capacitor chip includes a chamfer portion located adjacent to and surrounding the end face. Typically, the capacitor chip is square in cross section, and the chamfer portion includes a quadrilaterally arranged group of chamfer faces.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: September 28, 1999
    Assignee: Rohm Co., Ltd.
    Inventors: Takahiro Maeda, Shouichi Yanagi, Chojiro Kuriyama
  • Patent number: 5880926
    Abstract: An electrolytic capacitor device includes a capacitor which has a capacitor element and leads extending from one end of the element, and a square mounting board for use in mounting the capacitor device on a printed circuit board. The mounting board is connected to the one end of the capacitor. The leads are inserted into openings extending through the mounting board. The mounting board has parallel slits extending from the openings to one side edge of the mounting board. Each slit is wider in its open end at the one side edge of the mounting board than the diameter of the associated opening. The bottom surface of the mounting board has metal plate terminals which extend from the openings to different side edges of the mounting board. The terminals have rising portions extending upward along the inner walls of the slits and the openings. The leads have tip ends welded in their peripheries to the rising portions. The top surface of the mounting board has a U-shaped stop opening toward the one side edge.
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: March 9, 1999
    Assignee: Nichicon Corporation
    Inventors: Seiichi Nishino, Kozaburo Okubo, Hiroyuki Nakagawa, Takashi Yokoyama, Takeru Nonoguchi
  • Patent number: 5581435
    Abstract: A film capacitor element produced from a metallized polyester film is described. In the metallized polyester film, the adhesion between a vapor-deposited metal layer and a polyester substrate is improved by providing a coating layer comprising a specific water soluble or water dispersible resin. The film capacitor produced by the use of the metallized polyester film has good moist heat resistance and long term stability in performance.
    Type: Grant
    Filed: November 8, 1991
    Date of Patent: December 3, 1996
    Assignee: Diafoil Company, Limited
    Inventors: Shin-ichi Kinoshita, Naohiro Takeda
  • Patent number: 4881151
    Abstract: An electrolytic foil capacitor comprises a metal housing sealed on one side with an electrically insulating material, the housing containing, wound around a metal pin, an assembly of an anode foil at least two separator foils, and a cathode foil, which are wound together to form a roll. The cathode foil is provided with a first tag projecting from roll, which tag is mechanically and electrically connected to the metal housing of the capacitor. The capacitor roll is mechanically connected to the metal pin via a short side of a strip of a separator foil 24, and because the anode foil is provided with a second tag projecting from the roll, which tag is mechanically and electrically connected to the metal pin.
    Type: Grant
    Filed: February 15, 1989
    Date of Patent: November 14, 1989
    Assignee: U.S. Philips Corporation
    Inventors: Johannus W. Weekamp, Benedictus C. H. Fransen, Hendrik van der Ploeg
  • Patent number: 4827381
    Abstract: A solid electrolytic capacitor having an anode body which is punched from aluminum sheet, etched and folded, and provided with a dielectric oxide layer by electrolytic oxidation, which dielectric oxide layer is covered with a semiconducting oxide-layer on which a conducting layer and leads are provided. In order to prevent contamination of the portion of the anode tag 9 to which the lead has to be welded, the anode tag 9 is designed with one or more diversions or branches 124, 25, 27, 29 in and/or out of the original plane, so that one or more apertures or recesses are formed between the relevant diversion or branch and the upper side of the anode body with a projected height of at least 0.8 mm.
    Type: Grant
    Filed: August 16, 1988
    Date of Patent: May 2, 1989
    Assignee: U.S. Philips Corporation
    Inventors: Gerrit Brommer, Arend Van Herwijnen, Cornelis J. Talma, Herbert E. V. Veenstra