Patents by Inventor Katsuhiro Yoshida

Katsuhiro Yoshida 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: 20100120962
    Abstract: A conditioner, surface treatment method, and metal plating film forming method for a moist method of providing a plating film with strong adhesion towards a surface with low roughness without forming a metal film or performing an adhesion promoter pretreatment using a wet method, when plating a resin substrate containing a blend of resin material and glass material, and the like.
    Type: Application
    Filed: November 2, 2009
    Publication date: May 13, 2010
    Applicant: Rohm and Haas Electronic Materials LLC
    Inventor: Katsuhiro Yoshida
  • Patent number: 7684172
    Abstract: A solid electrolytic capacitor includes a valve metal formed with an anodized film; an inner conductive polymer film formed on the anodized film; and an outer conductive polymer film formed on the inner conductive polymer film. The outer conductive polymer film is obtained by: preparing a first polymer solution (PEDOT/PSSA); dissolving a predetermined dissolved substance in a non-aqueous solvent, the predetermined dissolved substance being selected from the group consisting of boric acid, 1-naphthalenesulfonic acid, 2-naphthalenesulfonic acid, 1,3,6-naphthalenetrisulfonic acid, and polystyrenesulfonic acid, and a salt thereof; mixing the dissolved solvent with pure water to obtain an additive solution; adding the additive solution into the first polymer solution to obtain a second polymer solution; and applying the second polymer solution to the inner conductive polymer film.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: March 23, 2010
    Assignee: NEC TOKIN Corporation
    Inventors: Takeo Kasuga, Yuji Yoshida, Masanori Takahashi, Ryuta Kobayakawa, Takeshi Saito, Koji Sakata, Sadamu Toita, Katsuhiro Yoshida
  • Publication number: 20090244814
    Abstract: A method for manufacturing a solid electrolytic capacitor device is disclosed. The solid electrolytic capacitor device comprises a package substrate and a capacitor element which is mounted on the package substrate. The package substrate comprises an outer anode electrode, an outer cathode electrode, an inner anode electrode and an inner cathode electrode The outer anode electrode is electrically connected to the inner anode electrode. The outer cathode electrode is electrically connected to the inner cathode electrode. The capacitor element comprises a capacitor body and an anode lead portion which extends from the capacitor body. The capacitor body has a surface at least one part of which is provided with a cathode portion. The method comprises: forming the anode lead portion; forming the cathode portion after the formation of the anode lead portion; and connecting the anode lead portion and the cathode portion to the inner anode electrode and the inner cathode electrode, respectively.
    Type: Application
    Filed: March 25, 2009
    Publication date: October 1, 2009
    Applicant: NEC TOKIN Corporation
    Inventors: Shinya TOKASHIKI, Katsuhiro Yoshida, Masanori Takahashi
  • Publication number: 20090237868
    Abstract: A capacitor device comprises first and second substrates and a capacitor element that comprises an anode portion and a cathode portion. The first substrate has a first inner surface and a first outer surface and is provided with a first inner anode terminal, a first inner cathode terminal, a first outer anode terminal and a first outer cathode terminal. The capacitor element is mounted on the first inner surface of the first substrate. The first inner anode terminal and the first inner cathode terminal are formed on the first inner surface and are electrically connected to the anode portion and the cathode portion, respectively. The first outer anode terminal and the first outer cathode terminal are formed on the first outer surface and are electrically connected to the first inner anode terminal and the first inner cathode terminal, respectively.
    Type: Application
    Filed: March 17, 2009
    Publication date: September 24, 2009
    Applicant: NEC TOKIN Corporation
    Inventors: Masanori TAKAHASHI, Koji Sakata, Katsuhiro Yoshida
  • Publication number: 20090195969
    Abstract: The terminal plate 30 is attached to the capacitor elements 10 so that a second plate surface of the insulating plate 32 faces a side surface of each of the capacitor elements 10. The side surface is parallel to the longitudinal direction L1 and the thickness direction t1 of the anode plate 1.
    Type: Application
    Filed: February 4, 2009
    Publication date: August 6, 2009
    Applicant: NEC TOKIN CORPORATION
    Inventors: Yuji YOSHIDA, Takashi Mizukoshi, Koji Sakata, Katsuhiro Yoshida, Takeshi Saito
  • Publication number: 20090168303
    Abstract: A capacitor device comprises a capacitor element and an interposer. The capacitor element has a connection surface and comprises an anode electrode and a cathode electrode. The anode electrode and the cathode electrode are formed, at least in part, on the connection surface. The interposer comprises an insulator substrate, a plurality of first anode terminals, a plurality of first cathode terminals, a second anode terminal, a second cathode terminal, an anode through-hole and a cathode through-hole. The insulator substrate has first and second surfaces and has no inner conductive layer. The first anode terminals and the first cathode terminals are formed on the first surface. The first anode terminals are more in number than the anode electrode of the capacitor element. The first cathode terminals are more in number than the cathode electrode of the capacitor element The second anode terminal and the second cathode terminal are formed on the second surface.
    Type: Application
    Filed: December 24, 2008
    Publication date: July 2, 2009
    Applicant: NEC TOKIN Corporation
    Inventors: Katsuhiro YOSHIDA, Tetsuya YOSHINARI, Takeshi SAITO
  • Patent number: 7550360
    Abstract: In a method of manufacturing a solid electrolytic capacitor, at first, an anodic oxide film is formed on the surface of an aluminum base. Then, a solid electrolyte layer is formed of a conductive polymer or the like on the anodic oxide film. Then, a cathode electrode portion including a silver paste layer is formed on the solid electrolyte layer. Then, a conductive paste is coated on the anodic oxide film on one side of the aluminum base and cured, thereby forming a metal silver layer. Then, a laser beam is irradiated from the opposite side of the aluminum base to weld together the aluminum base and the metal silver layer, thereby forming an anode electrode portion.
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: June 23, 2009
    Assignee: NEC TOKIN Corporation
    Inventors: Yuji Yoshida, Katsuhiro Yoshida
  • Publication number: 20090116173
    Abstract: A solid electrolytic capacitor according to this invention includes a capacitor element with a drawn-out anode lead, a conversion substrate mounted with the capacitor element, and a casing resin covering the capacitor element mounted on the conversion substrate. The conversion substrate has, on one surface thereof, a connection pattern composed of an anode portion connected to the anode lead and a cathode portion connected to the body of the capacitor element. The conversion substrate further has, on another surface thereof on the side opposite to the foregoing one surface, a terminal pattern composed of an anode terminal and a cathode terminal connected to the anode portion and the cathode portion through the conversion substrate, respectively. The terminal pattern differs from the connection pattern.
    Type: Application
    Filed: October 11, 2007
    Publication date: May 7, 2009
    Applicant: NEC TOKIN Corporation
    Inventors: Kunihiko Shimizu, Kazuyuki Katoh, Katsuhiro Yoshida
  • Patent number: 7529516
    Abstract: An image processing apparatus according to this invention has an apparatus body containing an image forming part, an opening/closing member attached to be openable/closable about an opening/closing shaft via a hinge with respect to an upper surface of the apparatus body, a detecting part that detects an opening/closing state of the opening/closing member, a scanner part arranged in an upper part of the apparatus body and arranged to be slidable horizontally, and a driving part that slides the scanner part in accordance with the opening/closing state of the opening/closing member from the detecting part.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: May 5, 2009
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Hisaya Ishio, Katsuhiro Yoshida
  • Patent number: 7525791
    Abstract: A solid electrolytic capacitor is provided which is capable of exhibiting an excellent characteristic and high reliability against thermal stress. The solid electrolytic capacitor includes a base member having a capacitor element connecting face on its upper surface side and an electrode mounting face on its lower surface side and being made up of an insulating plate having first conductors and second conductors, disposed in a staggered format, each providing conduction between the upper and lower surface sides of the base member, and the capacitor element having anode portions and cathode portions, each being disposed in a staggered format, connected to each of the first and second conductors.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: April 28, 2009
    Assignee: NEC Tokin Corporation
    Inventors: Koji Sakata, Takeshi Saito, Yuji Yoshida, Takeo Kasuga, Masanori Takahashi, Katsuhiro Yoshida
  • Publication number: 20090103243
    Abstract: A multiterminal solid electrolytic capacitor includes a capacitor element including a porous sintered body which includes a plurality of anode leads projecting from a surface of the porous sintered body and which is made from a valve metal powder, a dielectric oxide coating disposed on the porous sintered body, and a cathode including a solid electrolyte layer disposed on the dielectric oxide coating. The multiterminal solid electrolytic capacitor further includes a substrate which carries the capacitor element, which includes a plurality of anode-mounting terminals and a cathode-mounting terminal, and which is covered with resin. The anode leads are portions of a valve metal pattern which extends in the porous sintered body and which bends at a plurality of locations so as to have a desired path length.
    Type: Application
    Filed: October 17, 2008
    Publication date: April 23, 2009
    Applicant: NEC TOKIN Corporation
    Inventors: Takashi Mizukoshi, Koji Sakata, Katsuhiro Yoshida, Tetsuya Yoshinari
  • Publication number: 20090056093
    Abstract: A method for manufacturing a solid electrolytic capacitor has the steps of: mixing valve metal powders with organic binder for granulation, press-molding granulated powders embedded with a valve metal lead, sintering a press-molded compact in vacuum to produce a sintered body, and anodizing the sintered body to form a dielectric oxide film layer. The method further has a step of performing a cathode electrolytic cleaning to the sintered body before the step of forming the dielectric oxide film layer. The cathode electrolytic cleaning is performed in an acid solution, which is a mixed acid solution of hydrofluoric acid, nitric acid, and sulfuric acid.
    Type: Application
    Filed: September 5, 2008
    Publication date: March 5, 2009
    Applicant: NEC TOKIN Corporation
    Inventors: Yasuhisa Sugawara, Masako Ohya, Katsuhiro Yoshida
  • Patent number: 7481850
    Abstract: On a surface-roughened aluminum foil, an aluminum oxide film as an anodic oxide film is formed. Then, a conductive polymer layer as a solid electrolyte is formed thereon and thereafter a first metal plating layer is directly formed on the conductive polymer layer, thereby forming a cathode portion. On the other hand, a second metal plating layer is formed on another portion of the surface-roughened aluminum foil, which is not subjected to anodic oxidation or which is subjected to anodic oxidation followed by polishing or formation of an anode deposition film, to thereby form an anode portion. Third metal plating layers are formed at the anode and the cathode portions to obtain a capacitor element. A plurality of capacitor elements are stacked and bonded together fusion after formation of the third metal plating layers. Alternatively the capacitor elements may be bonded together by conductive paste without the third metal layers.
    Type: Grant
    Filed: March 15, 2007
    Date of Patent: January 27, 2009
    Assignee: NEC Tokin Corporation
    Inventors: Takeshi Saito, Sadamu Toita, Katsuhiro Yoshida
  • Publication number: 20080304210
    Abstract: A solid-state electrolytic capacitor including a stacked body of a solid-state electrolytic capacitor element unit and an electrode conversion board. The unit includes two kinds of solid-state electrolytic capacitor elements. Each of first kind of solid-state electrolytic capacitor elements uses an anode body having a total thickness of an aluminum foil of 350 ?m and a residual core thickness, i.e., the total thickness minus the thickness of an etched layer, is 50 ?m. A second kind of solid-state electrolytic capacitor element provided on the mounting surface side uses an anode body having a total thickness of an aluminum foil of 150 ?m and a residual core thickness is 50 ?m. The electrode conversion board includes external anode and external cathode terminals that are arranged In a checkered manner and also includes, on the side opposite to the board, anode electrode and cathode electrode plates.
    Type: Application
    Filed: June 5, 2008
    Publication date: December 11, 2008
    Applicant: NEC TOKIN Corporation
    Inventors: Takeo Kasuga, Masanori Takahashi, Koji Sakata, Yuji Yoshida, Takeshi Saito, Katsuhiro Yoshida
  • Patent number: 7460359
    Abstract: The capacitor element includes as an anode an aluminum foil in the form of a thin plate, an oxide layer formed as a dielectric on the surface of the anode, and a conductive polymer layer formed as a cathode on the dielectric. The capacitor is formed by drawing terminals in arrays from the capacitor element. On the upper side of the capacitor element is provided an embossed copper foil 11 for suppressing deformation of the capacitor element. The anode terminals and the cathode terminals are drawn to the lower side of the capacitor element. The anode terminals and the cathode terminals are alternately formed at the same pitch in the x-direction and the y-direction, so that the heteropolar terminals are disposed at the adjacent positions with respect to any one of the terminals.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: December 2, 2008
    Assignee: NEC Tokin Corporation
    Inventors: Koji Sakata, Katsuhiro Yoshida, Yoshitaka Hori, Tomohide Date
  • Publication number: 20080291606
    Abstract: In a thin solid electrolytic capacitor including a solid electrolytic capacitor element disposed on a substrate, the solid electrolytic capacitor element has an upper surface largely extending along the substrate as compared with a height dimension thereof from the substrate. A casing portion is at least partly made of a resin and surrounds the solid electrolytic capacitor element jointly with the substrate. The casing portion includes a non-adhesive member that is in contact with an upper surface of the solid electrolytic capacitor element, but is not adhesive to the solid electrolytic capacitor element.
    Type: Application
    Filed: May 19, 2008
    Publication date: November 27, 2008
    Applicant: NEC TOKIN Corporation
    Inventors: Masanori TAKAHASHI, Takeshi Saito, Takeo Kasuga, Yuji Yoshida, Katsuhiro Yoshida, Koji Sakata
  • Patent number: 7457103
    Abstract: In a solid electrolytic capacitor including a device portion having a cathode conductor layer and an anode conductor layer arranged on a sheet-like or a foil-like base member, a first insulating resin layer is formed on the cathode conductor layer and the anode conductor layer. A positive electrode mounting terminal layer is formed on the first insulating resin layer. An anode conductor portion penetrates the first insulating resin layer to electrically connect the positive electrode mounting terminal layer to the anode conductor layer. A plurality of negative electrode mounting terminal layers are arranged on the first insulating resin layer. A cathode conductor portion penetrates the first insulating resin layer to electrically connect the negative electrode mounting terminal layer to the cathode conductor layer. A second insulating resin layer is formed on the positive electrode mounting terminal layer.
    Type: Grant
    Filed: May 5, 2006
    Date of Patent: November 25, 2008
    Assignee: NEC TOKIN Corporation
    Inventors: Katsuhiro Yoshida, Koji Sakata
  • Publication number: 20080259526
    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: Application
    Filed: April 17, 2008
    Publication date: October 23, 2008
    Applicant: NEC TOKIN Corporation
    Inventors: Yuji Yoshida, Katsuhiro Yoshida, Takeo Kasuga, Masanori Takahashi, Takeshi Saito, Koji Sakata
  • Publication number: 20080232039
    Abstract: A solid electrolytic capacitor including a solid electrolytic capacitor component comprises a porous anode body 2 composed of valve metal having a anode lead 1 protruding therefrom, a anode oxide film, a solid electrolyte layer 4, a graphite layer 5, a silver paste layer 6, a resist layer 3 separating the anode lead 1 used as a anode portion and the porous anode body 2 used as a cathode portion, and a anode lead element 7 connected to the anode lead 1, the anode oxide film, solid electrolyte layer 4, graphite layer 5, silver paste layer 6 being successively formed on the surface of the porous anode body 2, wherein the solid electrolytic capacitor component is bonded on a mounting substrate 21 having a anode terminal 21a, a cathode terminal 21b, and an insulating portion 21c therebetween with a precuring insulating adhesive 9 formed on the insulating portion 21c of the mounting substrate 21 and precuring conductive adhesives 8 formed on the anode terminal and cathode terminal, and sealed with exterior resin 10
    Type: Application
    Filed: March 13, 2008
    Publication date: September 25, 2008
    Applicant: NEC TOKIN CORPORATION
    Inventors: Takeshi Saito, Yuji Yoshida, Takeo Kasuga, Koji Sakata, Katsuhiro Yoshida, Masanori Takahashi
  • Patent number: D576943
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: September 16, 2008
    Assignee: NEC Tokin Corporation
    Inventors: Katsuhiro Yoshida, Koji Sakata, Kazuyuki Katoh