Patents Assigned to Tokin Corporation
  • Patent number: 8652199
    Abstract: To provide a stent which holds various performances such as deliverability, prevention of restenosis, flexible shape conformability, and so on and is therefore adaptable not only to a bile duct but also to a blood vessel system such as a tortuous coronary artery substantially without causing restenosis. A stent with an autonomic function is made of a Ti—Ni based shape memory alloy and has a maximum expanding force at a center portion in its lengthwise direction.
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: February 18, 2014
    Assignees: NEC Tokin Corporation, Tohoku University, Japan Stent Technology Co., Ltd.
    Inventors: Michihide Ozawa, Kiyoshi Yamauchi, Yuji Sutou, Takamitsu Takagi, Shuzou Yamashita, Kouji Mori
  • Publication number: 20140042321
    Abstract: An infrared sensor comprises a circuit board, at least two support portions, an FET element and a pyroelectric element. The circuit board has an upper principal surface formed with a plurality of electrodes. Each of the support portions has an upper surface, a lower surface, an upper conductive pattern formed on the upper surface and a lower conductive pattern formed on the lower surface. The upper conductive pattern is electrically connected with the lower conductive pattern. The lower conductive pattern is connected to the electrode of the upper principal surface of the circuit board. The FET element is located between the at least two support portions and arranged on the upper principal surface of the circuit board. The pyroelectric element is electrically connected with the upper conductive patterns of the support portions. The pyroelectric element is supported by the support portions so as to be located above the FET element.
    Type: Application
    Filed: August 5, 2013
    Publication date: February 13, 2014
    Applicant: NEC Tokin Corporation
    Inventors: Yuji NITOBE, Masahiro SAITO, Shigemi FUJIWARA, Akitoshi SHIMO
  • Publication number: 20140035790
    Abstract: An antenna device, which has wide-angle directivity and a configuration suitable to be used in a portable electronic apparatus, includes a flat board-like substantially rectangular soft magnetic body, and a loop-shaped coil disposed from a front surface to a rear surface of the soft magnetic body such that a region surrounded by the coil includes at least a part of a specific edge, i.e., one edge out of four edges of the soft magnetic body, and does not include a facing edge that faces the specific edge.
    Type: Application
    Filed: April 22, 2011
    Publication date: February 6, 2014
    Applicant: NEC TOKIN CORPORATION
    Inventors: Kenichi Chatani, Naoharu Yamamoto, Toshiaki Oka, Takashi Otsuki
  • Publication number: 20140022705
    Abstract: This is to provide an electroconductive polymer material which has excellent adhesion to a base and excellent water resistance. Also, this is to provide a solid electrolytic capacitor which has excellent water resistance by using the same. An electroconductive polymer solution according to the present invention contains an electroconductive polymer, at least one water-soluble multivalent alcohol, and at least one oxoacid having two or more hydroxy groups. Since a resin obtained by carrying out a polycondensation reaction of the water-soluble multivalent alcohol and the oxoacid has a cross-linked structure, an electroconductive polymer having lower water-absorbing property and more excellent water resistance in comparison with a resin having a linear structure can be obtained.
    Type: Application
    Filed: April 9, 2012
    Publication date: January 23, 2014
    Applicant: NEC Tokin Corporation
    Inventors: Yasuhiro Tomioka, Tomoki Nobuta, Yasuhisa Sugawara, Yuji Yoshida, Satoshi Suzuki
  • Patent number: 8625254
    Abstract: A solid electrolytic capacitor includes an anode formed of a valve metal and having a roughened surface layer at a surface thereof, a dielectric layer formed of a valve metal oxide and formed on the anode, a cathode formed of a conductive polymer layer formed on the dielectric layer, an anode lead formed adjacent to and integrally with the anode, and a resist formed of an insulating material and delimiting the anode and the anode lead. The anode and the anode lead have a first stepped portion having both surfaces each cut in a thickness direction and covered with the resist, and the anode lead has a second stepped portion having both surfaces each cut deeper in the thickness direction than the first stepped portion.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: January 7, 2014
    Assignee: NEC Tokin Corporation
    Inventors: Naoki Takahashi, Toshihiko Nishiyama, Satoshi Suzuki, Ryuta Kobayakawa, Tomoki Nobuta
  • Publication number: 20130342026
    Abstract: A power-receiving device in a non-contact power transmission system includes a power-receiving antenna circuit for receiving power transmitted from a power-transmitting device, a rectification circuit for rectifying power received by the power-receiving antenna circuit, a frequency-changing circuit for changing a received power frequency of the power-receiving antenna circuit, and a drive circuit for driving the frequency-changing circuit. The power-receiving antenna circuit includes two terminals, La and Lb. The frequency-changing circuit includes a circuit configuration symmetrical about the circuit center (center tap (CT)) thereof, and is connected between the terminals La and Lb. The rectification circuit is a single-phase bridge rectification circuit. A ground terminal of the rectification circuit is connected to the circuit center (center tap (CT)) of the frequency-changing circuit.
    Type: Application
    Filed: March 9, 2012
    Publication date: December 26, 2013
    Applicant: NEC TOKIN CORPORATION
    Inventors: Koichi Mishina, Koji Sato
  • Patent number: 8614879
    Abstract: A solid electrolytic capacitor according to an aspect of the present invention includes an anode conductor including a porous valve metal body, a dielectric layer formed on a surface of the anode conductor, and a solid electrolyte layer including a conductive polymer layer formed on a surface of the dielectric layer, in which the solid electrolyte layer includes a first solid electrolyte layer formed on a surface of the dielectric layer, and a second solid electrolyte layer formed on a surface of the first solid electrolyte layer, and at least one continuous or discontinuous layer containing an amine compound exists between the first and second solid electrolyte layers, and inside the second solid electrolyte layer.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: December 24, 2013
    Assignee: NEC Tokin Corporation
    Inventors: Masanori Takahashi, Satoshi Iwai, Masami Ishijima
  • Publication number: 20130270924
    Abstract: An electronic equipment is provided with an antenna including a coil, a load, a power feeding unit for feeding power received by the antenna to the load, a communication unit for communicating with the outside world via the antenna, a switching circuit installed between the antenna and the communication unit, and a switching control unit for controlling ON/OFF of the switching circuit according to power to be received by the antenna.
    Type: Application
    Filed: December 26, 2011
    Publication date: October 17, 2013
    Applicant: NEC TOKIN CORPORATION
    Inventors: Masashi Mori, Koichi Mishina, Yuichi Hosokawa, Koji Sato
  • Publication number: 20130236636
    Abstract: The present invention provides an electroconductive polymer solution in which the good dispersibility is maintained and the pH is arbitrarily adjusted, and an electroconductive polymer composition having an excellent heat resistance. Further, the present invention provides a solid electrolytic capacitor having an excellent reliability. The present invention is an electroconductive polymer solution, containing an electroconductive polymer in which a dopant is doped, a first compound having an amino group and a hydroxyl group, a second compound having a carboxylic acid group, and a dispersing medium.
    Type: Application
    Filed: February 27, 2013
    Publication date: September 12, 2013
    Applicant: NEC TOKIN Corporation
    Inventors: Tomoki NOBUTA, Yasuhisa SUGAWARA, Satoshi SUZUKI, Yasuhiro TOMIOKA
  • Publication number: 20130234026
    Abstract: While conductive adhesives 60 are provided between element electrodes of a pyroelectric element 10 and board electrodes of an installation board 20, the conductive adhesives 60 are hardened to connect between the element electrodes of the pyroelectric element 10 and the board electrodes of the installation board 20. The conductive adhesives 60 include epoxy resin and, after hardened, have 4 B to 7 H, both inclusive, of pencil hardness as their hardness on JIS K 5600-5-4 (ISO 15184) standard basis. If the pyroelectric element 10 is broken down, the hardened conductive adhesives 60 are impacted or are cut by using a cutter to take off the pyroelectric element 10 from the installation board 20.
    Type: Application
    Filed: September 20, 2011
    Publication date: September 12, 2013
    Applicant: NEC TOKIN CORPORATION
    Inventor: Shigemi Fujiwara
  • Publication number: 20130229750
    Abstract: The present invention provides an electroconductive polymer composition for a solid electrolytic capacitor which has a high electroconductivity and an excellent heat resistance. Also, the present invention provides a solid electrolytic capacitor having a low ESR and an excellent heat resistance. The present invention is an electroconductive polymer composition, obtained by removing a solvent or a dispersing medium from an electroconductive polymer solution comprising: an electroconductive polymer in which a dopant is doped; an oxazoline group-containing compound; a water-soluble compound having at least one or more of carboxyl group, aromatic phenol group and thiol group as a functional group; and a solvent or a dispersing medium.
    Type: Application
    Filed: February 20, 2013
    Publication date: September 5, 2013
    Applicant: NEC TOKIN Corporation
    Inventors: Tomoki NOBUTA, Yasuhisa SUGAWARA, Satoshi SUZUKI, Yasuhiro TOMIOKA
  • Publication number: 20130222978
    Abstract: The present invention provides an electroconductive polymer suspension solution and an electroconductive polymer material which has a high electroconductivity and in which the time-related deterioration of the electroconductivity is suppressed. Also, the present invention provides an electrolytic capacitor with a low ESR using the electroconductive polymer material as a solid electrolyte and a method for producing the same. In the present invention, electroconductive polymer particles 1 in the electroconductive polymer material are bonded via organic dispersant 2 and cross-linker 3 to obtain a strong bond between electroconductive polymer particles 1.
    Type: Application
    Filed: February 22, 2013
    Publication date: August 29, 2013
    Applicant: NEC TOKIN Corporation
    Inventor: NEC TOKIN Corporation
  • Publication number: 20130221220
    Abstract: A pyroelectric sensor array is attachable on a circuit board. The pyroelectric sensor array comprises a pyroelectric board and a plurality of pyroelectric elements formed on the pyroelectric board. The pyroelectric board has a connection surface configured to be placed on the circuit board. The pyroelectric elements contains a peripheral pyroelectric element arranged at a peripheral portion of the pyroelectric board in a predetermined arranging direction and a central pyroelectric element arranged at a central portion of the pyroelectric board. Each of the pyroelectric elements has two adjacent connection electrodes formed on the connection surface. An electrostatic capacity between the two connection electrodes of the peripheral pyroelectric element is larger than an electrostatic capacity between the two connection electrodes of the central pyroelectric element.
    Type: Application
    Filed: October 18, 2011
    Publication date: August 29, 2013
    Applicant: NEC TOKIN CORPORATION
    Inventor: Shigemi Fujiwara
  • Publication number: 20130214198
    Abstract: In order to provide a noise suppression sheet whose imaginary part magnetic permeability ??, representing a magnetic loss component, is large at a GHz-band frequency, thus having an excellent noise suppression effect, the noise suppression sheet comprises a flat magnetic powder having a saturation magnetostriction of 12.0×10?6 or more and 38.0×10?6 or less and an organic binder.
    Type: Application
    Filed: February 20, 2013
    Publication date: August 22, 2013
    Applicant: NEC TOKIN CORPORATION
    Inventor: Toshiyuki IGARASHI
  • Patent number: 8514147
    Abstract: An EBG (Electromagnetic Bandgap) structure includes a magnetic material portion at least in part. It is preferable to arrange the magnetic material portion close to or, if possible, in contact with a conductor forming the EBG structure, for example, at least a portion of a ground conductor, a conductor producing a capacitance, and/or a conductor producing an inductance, such as a via. Examples of the magnetic material portion include a ferrite plating film, a composite magnetic material layer including magnetic powder and resin binder, and the like.
    Type: Grant
    Filed: November 22, 2007
    Date of Patent: August 20, 2013
    Assignee: NEC Tokin Corporation
    Inventors: Takayoshi Konishi, Koichi Kondo, Satoshi Arai, Shigeyoshi Yoshida
  • Publication number: 20130182374
    Abstract: The present invention provides a solid electrolytic capacitor and a method for producing the same, in which the anode portion is hard to be cut off and the reliability can be improved when the ultrasonic welding is carried out, and in which the volumetric efficiency is improved. The present invention is solid electrolytic capacitor 15, in which capacitor elements 11 are laminated, in which anode portion 5 and cathode portion 4 are electrically connected to anode terminal 17 and cathode terminal 18, respectively, and wherein solid electrolytic capacitor 15 includes outer packaging 10 of an insulating material with which a whole area is covered, as well as in which anode portion 5 includes welded portion 12 at a terminal portion thereof which is connected to anode terminal 17 and includes bundled portion 13 which bundles a part of anode portion 5 between welded portion 12 and insulating portion 3.
    Type: Application
    Filed: December 18, 2012
    Publication date: July 18, 2013
    Applicant: NEC TOKIN Corporation
    Inventor: NEC TOKIN Corporation
  • Publication number: 20130163150
    Abstract: Provided is an electroconductive polymer composition with a good film forming property and a high electroconductivity. Also, provided is an electroconductive polymer material and an electroconductive substrate with a high electroconductivity and transparency. Further, provided is a solid electrolytic capacitor with a high capacity and a low ESR. Disclosed is an electroconductive polymer composition, containing an electroconductive polymer obtained by an oxidation polymerization by using an oxidant in a reaction solution which contains at least one monomer selected from the group consisting of pyrrole, thiophene and derivatives thereof, a polyacid or a salt thereof as a dopant, and a solvent containing water and an aprotic solvent.
    Type: Application
    Filed: December 7, 2012
    Publication date: June 27, 2013
    Applicant: NEC TOKIN Corporation
    Inventor: NEC TOKIN Corporation
  • Publication number: 20130163149
    Abstract: Provided is an electroconductive polymer composition with a good film forming property. Also, provided is an clectroconductive polymer material with a high electroconductivity and a high transparency as well as an electroconductive substrate having the electroconductive polymer material on a substrate, and an electrode. Further, provided is an electronic device having the electrode as well as a solid electrolytic capacitor with a high capacitance and a low ESR. Disclosed is an electroconductive polymer composition, containing an electroconductive polymer in which a dopant is doped, a water-soluble polymer resin, and a solvent which contains water and an organic solvent whose dielectric constant is higher than that of water.
    Type: Application
    Filed: December 7, 2012
    Publication date: June 27, 2013
    Applicant: NEC TOKIN Corporation
    Inventor: NEC TOKIN Corporation
  • Publication number: 20130135790
    Abstract: The problem is to provide an electroconductive polymer composition in which, when a layer containing an electroconductive polymer material is formed, the thickness can arbitrarily be controlled and the layer has a high electroconductivity. The electroconductive polymer composition according to the present invention contains an electroconductive polymer, at least one of water and a water-miscible organic solvent, and a polymer having a urea group as a thickener. By the electroconductive polymer composition according to the present invention, when a layer containing an electroconductive polymer material is formed, the thickness can arbitrarily be controlled even if the amount of a thickener added is made small, and the layer containing an electroconductive polymer material having a high electroconductivity can be formed.
    Type: Application
    Filed: November 13, 2012
    Publication date: May 30, 2013
    Applicant: NEC TOKIN Corporation
    Inventor: NEC TOKIN Corporation
  • Publication number: 20130120098
    Abstract: An inductor comprises a magnetic core and a coil. The magnetic core has a wound portion around which the coil is wound, and a peripheral portion. The magnetic core is formed from two or more preliminarily-formed-bodies which are pressure-molded in a state where the coil winds one or more preliminarily-formed-bodies which form the wound portion. The preliminarily-formed-bodies include at least one preliminarily-formed-body which forms the peripheral portion while not form the wound portion. Each of the preliminarily-formed-bodies is made of a mixture of flat magnetic powders and an organic binder so as to have a plate-like shape. The flat magnetic powders are oriented so as to be parallel to the preliminarily-formed-body.
    Type: Application
    Filed: November 14, 2012
    Publication date: May 16, 2013
    Applicant: NEC TOKIN CORPORATION
    Inventor: NEC TOKIN CORPORATION