Patents Assigned to Tokin Corporation
  • Publication number: 20130100585
    Abstract: The present invention provides an electroconductive polymer suspension for providing an electroconductive polymer material with a high electroconductivity and a method for producing the same, and particularly provides a solid electrolytic capacitor with a low ESR and a method for producing the same. It includes a first step of carrying out chemical oxidative polymerization of a monomer providing an electroconductive polymer by using an oxidant in a solvent containing a first dopant including an organic acid or a salt thereof to synthesize an electroconductive polymer; a second step of purifying the electroconductive polymer; a third step of adding a second dopant, mixing an oxidant, subsequently adding a third dopant, and further mixing an oxidant in an aqueous solvent containing the purified electroconductive polymer; and a fourth step of carrying out an ion-exchange treatment to the mixture liquid obtained by the third step to obtain an electroconductive polymer suspension.
    Type: Application
    Filed: October 11, 2012
    Publication date: April 25, 2013
    Applicant: NEC Tokin Corporation
    Inventor: NEC Tokin Corporation
  • Patent number: 8416044
    Abstract: A reactor is composed of a coil and a core placed in the inside area and outer peripheral area of the coil in a container. The core is composed of magnetic powder, non-magnetic powder, and resin. The non-magnetic powder is composed of main component powder and low elastic modulus powder. The main component powder as a main component of the non-magnetic powder is made of one or more kinds of powder of a heat conductivity which is larger than that of the resin. The low elastic modulus powder is made of one or more kinds of powder of an elastic modulus which is smaller than that of the powder forming the main component powder.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: April 9, 2013
    Assignees: Denso Corporation, NEC Tokin Corporation
    Inventors: Kenji Saka, Takashi Yanbe
  • Publication number: 20130078512
    Abstract: An objective of the present invention is to provide a lithium secondary battery which can achieve a higher capacity and a longer life without reduction in a lower voltage in the battery. In the present invention, a compound represented by general formula (I) described below is used as a cathode active material, and a compound represented by general formula (II) described below is used as an anode active material, Lia1(Nix1Mn2-x1-y1M1y1)O4 ??(I) wherein the M1 is at least one of Ti, Si, Mg and Al, the a1 satisfies 0?a1?1, the x1 satisfies 0.4?x1?0.6, and the y1 satisfies 0?y1?0.4; and Lia2M21-y2M3y2Oz2 ??(II) wherein the M2 is at least one of Si and Sn; the M3 is at least one of Fe, Ni and Cu, the a2 satisfies 0?a2?5, the y2 satisfies 0?y2<0.3, and the z2 satisfies 0<z2<2.
    Type: Application
    Filed: November 21, 2012
    Publication date: March 28, 2013
    Applicant: NEC TOKIN CORPORATION
    Inventor: NEC Tokin Corporation
  • Patent number: 8405958
    Abstract: The present invention provides a conductive polymer suspension for providing a conductive polymer material having high conductivity and a method for producing the same, and particularly provides a solid electrolytic capacitor having low ESR and a method for producing the same. In an emulsion comprising a dopant of a low molecular organic acid or a salt thereof, obtained by emulsifying a monomer providing a conductive polymer, using a nonionic surfactant, in a water, the monomer is subjected to chemical oxidative polymerization, using an oxidant, to synthesize a conductive polymer. The obtained conductive polymer is purified, and then, the purified conductive polymer and an oxidant are mixed in an aqueous solvent containing a polyacid component to produce a conductive polymer suspension.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: March 26, 2013
    Assignee: NEC Tokin Corporation
    Inventors: Naoki Takahashi, Tomoki Nobuta, Yasuhisa Sugawara, Yuji Yoshida, Satoshi Suzuki, Yasuhiro Tomioka
  • Patent number: 8388865
    Abstract: A conductive polymer composition with excellent water resistance and conductivity, and a solid electrolytic capacitor with low ESR, excellent reliability, and especially moisture resistance. The conductive polymer composition includes a conductive polymer, a polyanion that includes a hydrophilic group, where the polyanion functioning as a dopant of the conductive polymer. At least a part of the hydrophilic group of the polyanion is condensed with an epoxy group in a compound with one epoxy group. A solid electrolytic capacitor of the present invention includes the conductive polymer composition.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: March 5, 2013
    Assignee: NEC Tokin Corporation
    Inventors: Yasuhisa Sugawara, Tomoki Nobuta, Naoki Takahashi, Ryuta Kobayakawa, Satoshi Suzuki
  • Publication number: 20130027163
    Abstract: A reactor is disclosed. The reactor is comprised of a housing, a solenoid coil, a center columnar member, and a core. The center columnar member provides first surfaces contacting with sandwich portions of the housing, and the core is comprised of resin including magnetic powder. The coil and the center columnar member are fixed in the core. A surface roughness (Rz2) of a second surface which contacts to the core is larger than a surface roughness (Rz1) of the first surfaces. The center columnar member further provides a basis surface of which roughness (Rz3) is smaller than the Rz2 and larger than the Rz1.
    Type: Application
    Filed: July 27, 2012
    Publication date: January 31, 2013
    Applicants: NEC TOKIN CORPORATION, DENSO CORPORATION
    Inventors: Kazuhiro KOSAKA, Ryota Tanabe, Souichi Yoshinaga, Masahiko Yamashita, Seigo Satou, Mitsutoshi Kameda, Tsugio Takeda
  • Publication number: 20120315546
    Abstract: To provide high energy density, good cycle properties and rate characteristics and long-term safety of a lithium ion battery containing at least an ionic liquid and a lithium salt. The above problems are solved by suppressing reduction and decomposition of the ionic liquid on an anode by using a graphite coated with an amorphous carbon or onto which an amorphous carbon is deposited as an anode active material.
    Type: Application
    Filed: August 13, 2012
    Publication date: December 13, 2012
    Applicant: NEC TOKIN CORPORATION
    Inventors: Shinako Kaneko, Hitoshi Ishikawa, Yasutaka Kono, Yoko Hashizume, Hiroshi Kobayashi
  • Patent number: 8320106
    Abstract: In a lower-face electrode type solid electrolytic multilayer capacitor and a mounting member having the same according to the present invention, fillet forming portions are formed by forming an electrode substrate cutting portion at a predetermined portion of an edge face in longer direction or in shorter direction of an electrode substrate, and a covering resin cutting portion on an edge face of a covering resin in a staircase pattern so that the electrode substrate cutting portion is surrounded by the covering resin cutting portion. According to the present invention, it is possible to provide the lower-face electrode type solid electrolytic multilayer capacitor and the mounting member having the same, in which the productivity is excellent, the volume efficiency can be improved to achieve the high capacitance, and the stable fillet can be formed on mounting.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: November 27, 2012
    Assignee: NEC Tokin Corporation
    Inventors: Akihiro Kawai, Kenji Araki
  • Patent number: 8305167
    Abstract: To provide a twin-type power electromagnetic relay having high reliability, having a reduced size and low mounting height, and suitable for surface mounting. By inserting projections provided in a coil spool, which is a component constituting an electromagnetic relay block, into projection insertion holes 5a and 5b formed in a base plate 5, two electromagnetic relay blocks 4A and 4B are arranged side by side on the base plate 5 such that their central axes are nearly parallel to the base plate. A base protective wall 5c is provided on the base plate 5, and a coil wire winding terminal portion of a spool is covered by the base protective wall and by a fixed terminal protective wall on the fixed terminal block when assembled, preventing foreign matters such as flux from entering between the contacts from the winding terminal portion.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: November 6, 2012
    Assignee: NEC Tokin Corporation
    Inventors: Yoshifumi Chida, Kei Chiba
  • Patent number: 8305166
    Abstract: To provide an electromagnetic relay having a reduced size, high conductivity, a high insulating performance between two fixed contact terminals and between each of the fixed contact terminals and backstop, a small number of factors causing a failure, and high reliability of electric contact. An electromagnetic relay has an electromagnetic block provided with a movable contact spring 14 swung by current flowing in a coil, two fixed contact terminals 22 and 22? each having a fixed contact, a backstop 23 having two movable contact abutment portions, and a base block 2 for retaining the above components. The base block 2 has a base portion 20 having substantially a rectangular shape, fixed contact terminal retaining portions 21 and 21? extending vertically from two opposing sides of the rectangle so as to retain the two fixed contact terminals, and a backstop retaining portion 24 extending vertically from the center portion of one of the remaining two opposing sides of the rectangle.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: November 6, 2012
    Assignee: NEC Tokin Corporation
    Inventors: Katsuto Kojima, Kei Chiba, Kouichi Mutou
  • Publication number: 20120276436
    Abstract: The present invention provides a stack-type lithium-ion polymer battery wherein: the battery capacity is not being degraded; the generation of the wrinkles and fracture of the separator is being suppressed; the battery has gas releasing paths; the displacement of an electrode stack hardly occurs; and the workability at the time of placing the electrode stack in a package body is improved by fixing the electrode stack. A stack-type lithium-ion polymer battery of the present invention comprises: a cathode 13; an anode 14; a separator 15; and a gel electrolyte; wherein an electrode stack 23 in which the cathode 13 and the anode 14 are stacked through the separator 15 is enclosed and fixed by insulating porous sheets 21 and 24, and is packaged with a laminate material.
    Type: Application
    Filed: July 11, 2012
    Publication date: November 1, 2012
    Applicant: NEC TOKIN CORPORATION
    Inventors: Shinako Kaneko, Ryuichi Kasahara, Hiroshi Kobayashi, Yasutaka Kono, Toshihiko Nishiyama
  • Patent number: 8295032
    Abstract: The present invention provides a solid electrolytic capacitor having sufficiently low impedance at high frequencies in which a conductive polymer formed on a dielectric oxide film has good adherence to the dielectric oxide film, and a manufacturing method of the solid electrolytic capacitor. The solid electrolytic capacitor of the present invention includes a valve metal; a dielectric oxide film layer formed on a surface of the valve metal; and a solid electrolyte layer, comprising a conductive polymer layer, formed on the dielectric oxide film layer. The conductive polymer layer contains, as an additive, 0.1 wt % to 30 wt % of an organic oligomer having an average degree of polymerization of 2 to 100.
    Type: Grant
    Filed: November 20, 2008
    Date of Patent: October 23, 2012
    Assignee: NEC Tokin Corporation
    Inventors: Yasuhisa Sugawara, Masako Ohya, Kazuyuki Katoh
  • Publication number: 20120262847
    Abstract: Provided is a solid electrolytic capacitor that is excellent in productivity, has improved volumetric efficiency aiming for capacity increase, a stable fillet shape when mounted, and has excellent ESL characteristics. Included is a capacitor stack element composed of a stack of capacitor elements. The capacitor element includes one anode part of an anode body made of linear, foil-like, or plate-like valve metal and a cathode part composed of dielectric, solid electrolyte, graphite, and silver paste layers, which are sequentially formed to another surface of the anode body separated by insulating resin. A fillet formation part with a recessed part is provided to an end surface of anode and cathode terminals of a mounting electrode side of a first direction end surface of the electrode substrate to which the capacitor stack element is mounted. Further, the anode and cathode terminals for element connection reach the end surface of the first direction.
    Type: Application
    Filed: April 13, 2012
    Publication date: October 18, 2012
    Applicant: NEC TOKIN Corporation
    Inventors: Akihiro KAWAI, Kenji Araki
  • Patent number: 8287665
    Abstract: A soft magnetic alloy contains P, B, and Cu as essential components. As a preferred example, an Fe-based alloy contains Fe of 70 atomic % or more, B of 5 atomic % to 25 atomic %, Cu of 1.5 atomic % or less (excluding zero), and P of 10 atomic or less (excluding zero).
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: October 16, 2012
    Assignees: NEC Tokin Corporation, Tohoku University
    Inventors: Akiri Urata, Hiroyuki Matsumoto, Akihiro Makino
  • Patent number: 8289677
    Abstract: The present invention provides a conductive polymer suspension for providing a conductive polymer material having a high conductivity and a method for producing the same, and in particular, a solid electrolytic capacitor having a low ESR and a method for producing the same. The conductive polymer suspension is produced by: synthesizing a conductive polymer by chemical oxidative polymerization of a monomer giving the conductive polymer by using an oxidant in a solvent containing a dopant consisting of a low-molecular organic acid or a salt thereof; purifying the conductive polymer; and mixing the purified conductive polymer and an oxidant in an aqueous solvent containing a polyacid component.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: October 16, 2012
    Assignee: NEC Tokin Corporation
    Inventors: Ryuta Kobayakawa, Tomoki Nobuta, Naoki Takahashi, Yasuhisa Sugawara, Satoshi Suzuki, Toshihiko Nishiyama
  • Patent number: 8279582
    Abstract: The present invention provides a conductive polymer suspension for providing a conductive polymer material having a high conductivity and a method for producing the same, and in particular, a solid electrolytic capacitor having a low ESR and a method for producing the same. The conductive polymer suspension can be is produced by: synthesizing a conductive polymer by chemical oxidative polymerization of a monomer giving the conductive polymer by using an oxidant in an aqueous solvent containing a dopant consisting of a low-molecular organic acid or a salt thereof, or a polyacid having a weight average molecular weight of less than 2,000 or a salt thereof.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: October 2, 2012
    Assignee: NEC Tokin Corporation
    Inventors: Tomoki Nobuta, Ryuta Kobayakawa, Naoki Takahashi, Yasuhisa Sugawara, Satoshi Suzuki, Toshihiko Nishiyama
  • Publication number: 20120223058
    Abstract: A non-consumable electrode type arc welding apparatus includes a torch having an electrode portion and a nozzle, a gas supply that supplies, to the torch, a shielding gas flowing through a gap formed between the electrode portion and the nozzle, a first power source that applies a voltage between the electrode portion and the nozzle to generate a pilot arc, a second power source that applies a voltage between the electrode portion and a work to generate a main arc, and a controller that controls the first power source and the second power source. The electrode portion has an electrode and an electrode holding portion holding a base portion of the electrode, the electrode holding portion has a protrusion protruding toward the nozzle from the side facing the nozzle, and the protrusion and the nozzle are caused contact and separate from each other.
    Type: Application
    Filed: November 4, 2010
    Publication date: September 6, 2012
    Applicants: KABUSHIKI KAISHA YASKAWA DENKI, TOKIN CORPORATION, SANSHA ELECTRIC MANUFACTURING CO., LTD.
    Inventors: Seigo Nishikawa, Takeshi Morimoto, Naomichi Katsumata
  • Publication number: 20120199254
    Abstract: An alloy composition of Fe(100-X-Y-Z)BXPYCuz, where 4?X?14 atomic %, 0<Y?10 atomic %, and 0.5?Z?2 atomic %. This alloy composition has an amorphous phase as a main phase. This alloy composition is used as a starting material and exposed to a heat-treatment so that nanocrystals comprising no more than 25 nm of bccFe can be crystallized. Thus, an Fe-based nano-crystalline alloy having superior magnetic properties can be obtained.
    Type: Application
    Filed: July 20, 2010
    Publication date: August 9, 2012
    Applicants: TOHOKU UNIVERSITY, NEC TOKIN CORPORATION
    Inventors: Akiri Urata, Yasunobu Yamada, Hiroyuki Matsumoto, Shigeyoshi Yoshida, Akihiro Makino
  • Publication number: 20120198936
    Abstract: A piezoelectric acceleration sensor comprises a piezoelectric element, a metallic sheet and a circuit board. The piezoelectric element is polarized in a predetermined direction. The circuit board includes a circuit portion and a roughly flat shaped base portion. The base portion protrudes from an end portion of the circuit portion. One of surfaces of the metallic sheet is fixed to and supported by a surface of the base portion. The piezoelectric element is fixed to and supported by a remaining one of the surfaces of the metallic sheet in a manner that the piezoelectric element and the base portion do not overlap each other in the predetermined direction.
    Type: Application
    Filed: September 28, 2010
    Publication date: August 9, 2012
    Applicant: NEC TOKIN CORPORATION
    Inventor: Masuto Saito
  • Patent number: D671890
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: December 4, 2012
    Assignee: NEC TOKIN Corporation
    Inventors: Shinya Tokashiki, Akihiro Kawai, Shigetaka Matsubara