Patents Assigned to NEC Tokin Corporation
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Publication number: 20100028769Abstract: A stacked secondary battery includes battery element including a multilayer structure formed by laying alternately flat plate-shaped positive electrodes and flat plate-shaped negative electrodes by way of separators, the number of the positive electrodes being larger by one than that of the negative electrodes or vice versa, and connecting positive electrode draw-out terminals of the positive electrodes to each other and also negative electrode draw-out terminals of the negative electrodes to each other, plate-shaped metal members respectively arranged on and held in contact with the opposite end surfaces of the multilayer structure as viewed in the stacking direction, binding members binding the plate-shaped metal members so as to pinch and hold the multilayer structure from the end surfaces thereof and a film casing containing the battery element pinched by and held between the plate-shaped metal members in a sealed condition.Type: ApplicationFiled: July 29, 2009Publication date: February 4, 2010Applicant: NEC TOKIN CORPORATIONInventors: Shinsuke Enomoto, Tomokazu Kumeuchi
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Publication number: 20100028767Abstract: A stacked secondary battery is formed by laying plate-shaped positive electrodes and plate-shaped negative electrodes one on the other by way of separators, wherein a collector is disposed at the front end of the end facet of each of the positive electrodes or the negative electrodes as viewed in a direction orthogonal relative to the stacking direction and has an active substance layer formed on the collector by applying slurry of particles of an active substance with a gap separating it from the front end or the electrode active substance layer is made to show a thickness varying from the front end toward the inside.Type: ApplicationFiled: July 29, 2009Publication date: February 4, 2010Applicant: NEC TOKIN CORPORATIONInventors: Tsuyoshi Inose, Takao Daidoji
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Patent number: 7651637Abstract: The present invention provides: a dopant solution for an electroconductive polymer characterized in that it comprises at least one selected from the group consisting of alkylamine salts and imidazole salts of benzene skeleton sulfonic acids and naphthalene skeleton sulfonic acids, having at least one OH group and at least one sulfonate group, at a concentration of 40 mass % or more; an oxidant and dopant solution for an electroconductive polymer including a mixture of the organic salt of the dopant as mentioned above, and a persulfate organic salt as an oxidant; an electroconductive composition including an electroconductive polymer prepared by using the oxidant and dopant solution as mentioned above; and solid electrolytic capacitor using the electroconductive composition as a solid electrolyte. The electroconductive composition has an improved electric conductivity, and the solid electrolytic capacitor has an improved reliability for a long time.Type: GrantFiled: February 3, 2006Date of Patent: January 26, 2010Assignees: Tayca Corporation, NEC TOKIN CorporationInventor: Ryosuke Sugihara
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Publication number: 20100013588Abstract: A coil device comprises a bobbin structure, three or more pin lines and two or more coils. The bobbin structure comprises a body section, a first flange section and a second flange section. The body section is positioned between the first flange section and the second flange section in a first horizontal direction. The first flange section comprises a first lower base and a first upper portion. The first upper portion extends upwardly from the first lower base. The first upper portion is provided with a first upper edge on which at least one guide recess is formed. The second flange section comprises a second lower base and a second upper portion. The second lower base faces the first lower base in the first horizontal direction. The second upper portion extends upwardly from the second lower base. The second upper portion faces the first upper portion in the first horizontal direction with the body section interposed therebetween.Type: ApplicationFiled: July 13, 2009Publication date: January 21, 2010Applicant: NEC TOKIN CorporationInventor: Sadakatsu SAKUMA
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Patent number: 7648774Abstract: An electromagnetic noise suppressor including a ferrite film is formed by regularly arranging constituents such as magnetized grains or one analogous to that. In the ferrite film, the constituents have at least one of the uniaxial anisotropy and the multiaxial anisotropy. The ferrite film has the magnetic anisotropy or the magnetic isotropy. The ferrite film is formed by a plating method in the presence of a magnetic field.Type: GrantFiled: September 16, 2008Date of Patent: January 19, 2010Assignee: NEC Tokin CorporationInventors: Koichi Kondo, Okikuni Takahata, Tatsuya Chiba, Hiroshi Ono, Shigeyoshi Yoshida, Masanori Abe, Masahiro Yamaguchi
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Publication number: 20100007215Abstract: A non-contact power transmission system comprises a power receiver and a power transmitter. The power transmitter includes a transmitter coil. The power receiver includes a module which comprises a coil sheet and a soft magnetic sheet stacked on the coil sheet. The coil sheet includes a receiver coil. Electric power is transmitted from the transmitter coil to the receiver coil. The soft magnetic sheet comprises a pair of insulation films and a soft magnetic member hermetically interposed between the insulation films.Type: ApplicationFiled: July 8, 2009Publication date: January 14, 2010Applicant: NEC TOKIN CorporationInventor: Sadakatsu Sakuma
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Patent number: 7619876Abstract: A solid electrolytic capacitor includes a porous sintered body made of a valve-acting metal and embedded with part of an anode lead having a protruding portion, a solid electrolyte layer formed in contact with a dielectric layer formed in the porous sintered body, a mounting anode terminal member, a mounting cathode terminal member, and an insulating casing resin. The capacitor further includes a small piece of a metal frame made of a valve-acting metal. This small piece of the metal frame is formed integrally with the protruding portion of the anode lead by cutting, after the anodic oxidation, the metal frame to which the protruding portion of the anode lead is fixed by resistance welding. The small piece of the metal frame and the mounting anode terminal member are connected together by wire bonding so that the anode lead and the mounting anode terminal member are electrically connected together.Type: GrantFiled: June 17, 2008Date of Patent: November 17, 2009Assignee: NEC TOKIN CorporationInventors: Kunihiko Shimizu, Takashi Mizukoshi, Koji Sakata
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Patent number: 7602602Abstract: A conductive polymer having high conductivity and a solid electrolytic capacitor having low ESR are provided. A conductive polymer is synthesized using as a monomer a compound of a dimer to a decamer in which 3-alkyl five-membered heterocyclic rings are bonded at positions 2 and 5, being sterically controlled. Further, this conductive polymer is used as the solid electrolyte of a solid electrolytic capacitor.Type: GrantFiled: January 27, 2009Date of Patent: October 13, 2009Assignee: Nec Tokin CorporationInventors: Naoki Takahashi, Ryuta Kobayakawa, Tomoki Nobuta, Yasuhisa Sugawara, Satoshi Suzuki
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Publication number: 20090253049Abstract: A non-aqueous electrolyte can suppress decomposition of a solvent, improve the cycle life of a secondary battery, suppress the rise of resistance of a secondary battery and improve the capacity maintenance ratio of a secondary battery A non-aqueous electrolyte secondary battery formed by using such a non-aqueous electrolyte includes a non-aqueous electrolyte containing an aprotic solvent and a disulfonic acid ester as expressed by chemical formula 1 shown below, a positive electrode and a negative electrode:Type: ApplicationFiled: April 7, 2009Publication date: October 8, 2009Applicant: NEC TOKIN CORPORATIONInventors: Hitoshi Ishikawa, Yasutaka Kono, Koji Utsugi, Yoko Hashizume, Shinako Kaneko, Hiroshi Kobayashi
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Publication number: 20090244814Abstract: 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: ApplicationFiled: March 25, 2009Publication date: October 1, 2009Applicant: NEC TOKIN CorporationInventors: Shinya TOKASHIKI, Katsuhiro Yoshida, Masanori Takahashi
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Patent number: 7595235Abstract: A solid electrolytic capacitor includes a package for a capacitor element including an anode lead portion and a cathode portion. The package includes an insulating resin member which is arranged to cover the capacitor element and which includes hole portions formed therethrough. An anode terminal of the solid electrolytic capacitor includes a metal-plating layer which is placed in the hole portion to be electrically connected to the anode lead portion through the hole portion. A cathode terminal of the solid electrolytic capacitor includes a metal-plating layer which is placed in the hole portion to be electrically connected to the cathode conducting portion through the hole portion.Type: GrantFiled: January 23, 2006Date of Patent: September 29, 2009Assignee: NEC Tokin CorporationInventors: Satoshi Arai, Sadamu Toita, Yoshihiko Saiki, Naoki Wako, Masahiko Takahashi
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Publication number: 20090237868Abstract: 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: ApplicationFiled: March 17, 2009Publication date: September 24, 2009Applicant: NEC TOKIN CorporationInventors: Masanori TAKAHASHI, Koji Sakata, Katsuhiro Yoshida
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Publication number: 20090233127Abstract: In a viewpoint of the invention, a fuel cell system includes a fuel cell configured to generate a electric power by using fuel; a first assisting power source; a protecting circuit connected to the first assisting power source and configured to detect a failure in the first assisting power source; an auxiliary unit configured to supply the fuel to the fuel cell; a control circuit configured to control the fuel cell and the auxiliary unit; a first power converter configured to drive the control circuit by using electric power from the first assisting power source; and a first synthesizing section configured to synthesize a first electric power from the fuel cell and a second electric power from the first assisting power source to supply a synthesized power to a load.Type: ApplicationFiled: February 24, 2006Publication date: September 17, 2009Applicants: NEC CORPORATION, NEC TOKIN CORPORATION, NEC PERSONAL PRODUCTS LTD.Inventors: Kazumasa Ohya, Kazuya Mori, Kazuhisa Nagase, Tsuyoshi Takemoto, Toshiaki Nakazawa, Takahisa Kitaguchi, Takashi Manako, Osamu Yamashita, Hidekazu Kimura, Hiroshi Kajitani
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Publication number: 20090225499Abstract: A conductive polymer having high conductivity and a solid electrolytic capacitor having low ESR are provided. A conductive polymer is synthesized using as a monomer a compound of a dimer to a decamer in which 3-alkyl five-membered heterocyclic rings are bonded at positions 2 and 5, being sterically controlled. Further, this conductive polymer is used as the solid electrolyte of a solid electrolytic capacitor.Type: ApplicationFiled: January 27, 2009Publication date: September 10, 2009Applicant: NEC TOKIN CORPORATIONInventors: Naoki TAKAHASHI, Ryuta KOBAYAKAWA, Tomoki NOBUTA, Yasuhisa SUGAWARA, Satoshi SUZUKI
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Publication number: 20090201631Abstract: In a solid electrolytic capacitor, a capacitor element laminate formed by stacking capacitor elements each using a valve metal as an anode body is bonded to a substrate by a conductive adhesive and packaged by a resin portion. The substrate includes a printed substrate made of an epoxy resin. On its mounting surface for the capacitor element laminate, there are provided an anode mounting portion and a cathode mounting portion each made of a copper base material. The anode mounting portion and the cathode mounting portion are electrically connected to an external anode terminal and an external cathode terminal, respectively, formed on the mounting surface of the solid electrolytic capacitor, through anode vias and cathode vias each penetrating through the epoxy resin. A part of the anode mounting portion on the substrate (6) extends to the outside of the packaging resin portion.Type: ApplicationFiled: February 13, 2009Publication date: August 13, 2009Applicant: NEC TOKIN CorporationInventors: Takeo KASUGA, Takashi Mizukoshi, Koji Sakata, Takeshi Saito
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Publication number: 20090195969Abstract: 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: ApplicationFiled: February 4, 2009Publication date: August 6, 2009Applicant: NEC TOKIN CORPORATIONInventors: Yuji YOSHIDA, Takashi Mizukoshi, Koji Sakata, Katsuhiro Yoshida, Takeshi Saito
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Patent number: 7566828Abstract: A power source device is provided which is capable of charging a secondary cell in a stable manner even in an environment in which power generated by a solar cell varies due to changes in sunlight intensity and/or ambient temperatures. By power generated by a solar cell module, an electric double-layer capacitor is charged and, by using a charging voltage of the electric double-layer capacitor, a booster-type DC-DC (Direct Current-Direct Current) converter is driven. A charge on/off controlling circuit detects the voltage of the electric double-layer capacitor and, when the voltage exceeds a high level threshold voltage, keeps a charge controlling signal (output signal from a terminal) in an active mode and performs a charge starting operation and, after that, when the voltage of the electric double-layer capacitor reaches a low level threshold value, holds the charge controlling signal in a non-active mode and performs a charge stopping operation.Type: GrantFiled: May 12, 2005Date of Patent: July 28, 2009Assignee: NEC Tokin CorporationInventor: Hiroshi Sasaki
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Publication number: 20090168304Abstract: The present invention provides a stacked solid electrolytic capacitor that allows further reducing ESR by increasing the number of stacked layers. The stacked solid electrolytic capacitor according to the present invention is a stacked solid electrolytic capacitor having a plurality of stacked solid electrolytic capacitor elements, and each solid electrolytic capacitor element comprises an anode formed of a valve action metal, an anode section formed on an end of the anode, a dielectric formed on the surface of the valve action metal and comprising an oxide of the valve action metal, and a cathode layer formed on the dielectric. The cathode layers and the anode sections of the solid electrolytic capacitor elements are respectively connected to each other across the plurality of stacked solid electrolytic capacitor elements.Type: ApplicationFiled: December 1, 2008Publication date: July 2, 2009Applicant: NEC TOKIN CORPORATIONInventors: Takeshi Saito, Takeo Kasuga, Koji Sakata
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Publication number: 20090168303Abstract: 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: ApplicationFiled: December 24, 2008Publication date: July 2, 2009Applicant: NEC TOKIN CorporationInventors: Katsuhiro YOSHIDA, Tetsuya YOSHINARI, Takeshi SAITO
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Patent number: D604273Type: GrantFiled: January 9, 2009Date of Patent: November 17, 2009Assignee: NEC Tokin CorporationInventors: Mitsuo Tamura, Masako Takashima, Hiroshi Nashihara, Hajime Harada, Hiroki Umeda