Patents by Inventor Masayuki Takeda

Masayuki Takeda 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).

  • Patent number: 7079378
    Abstract: An object of the present invention is to provide an electrolyte for an electrolytic capacitor, which is advantageous not only in that both electric conductivity and withstand voltage property are high, but also in that thermal stability is excellent, and an electrolytic capacitor using the electrolyte. Specifically, the present invention provides an electrolyte for an electrolytic capacitor, comprising a solvent, at least one quaternary amidinium salt selected from the group consisting of a quaternary amidinium salt of a hydroxy-substituted aromatic monocarboxylic acid and a quaternary amidinium salt of phthalic acid, and metal oxide particles, and an electrolytic capacitor using the electrolyte.
    Type: Grant
    Filed: March 27, 2001
    Date of Patent: July 18, 2006
    Assignees: Nippon Chemi-Con Corporation, Mitsubishi Chemical Corporation
    Inventors: Masayuki Takeda, Takako Takahashi, Makoto Ue, Tatsunori Tsuji, Masashi Ozawa
  • Publication number: 20060152882
    Abstract: An electrolytic capacitor having a low impedance characteristic, having a high withstand voltage characteristic of 100V class, wherein the electrolytic capacitor provides an excellent high temperature life characteristic and an excellent moisture resistance characteristic. The electrolyte solution containing the aluminum tetrafluoride salt is used. As separator in use comprises a heat resistant synthetic resin such as polyester, polypropylene, polyethylene, polyamido, vinylon, rayon, and the like, or a mixed paper containing glass fiber is used, the electrolytic capacitor has a low impedance characteristic, a high withstand voltage characteristic, and an excellent high temperature life characteristic.
    Type: Application
    Filed: November 7, 2003
    Publication date: July 13, 2006
    Inventors: Masayuki Takeda, Makoto Ue, Masashi Ozawa
  • Publication number: 20060127566
    Abstract: An electrolytic capacitor having a low impedance characteristic, having a high withstand voltage characteristic of 100V class, wherein the electrolytic capacitor provides an excellent high temperature life characteristic. The electrolyte solution containing the aluminum tetrafluoride salt is used. The moisture content of the capacitor element is adjusted to 0.7% by weight or less, wit respect to the weight of the capacitor element, preferably 0.5% by weight or less, and most preferably 0.4% by weight or less. In this way, the electrolytic capacitor having the low impedance characteristic and the high resistance voltage characteristic, and the excellent high temperature life characteristic is provided.
    Type: Application
    Filed: November 7, 2003
    Publication date: June 15, 2006
    Applicant: Nippon Chemi-Con Corporation
    Inventors: Masashi Ozawa, Masayuki Takeda, Makoto Ue
  • Publication number: 20060098384
    Abstract: An electrolytic capacitor having a low impedance characteristic, having a high withstand voltage characteristic of 100V class, wherein the electrolytic capacitor provides an excellent high temperature life characteristic and an excellent leakage characteristic. The electrolyte solution containing the aluminum tetrafluoride salt is used. The electrolytic capacitor of the present invention has a low impedance characteristic, a high withstand voltage characteristic, and an excellent high temperature life characteristic. Moreover, the aforementioned electrolyte solution is used, and a foil showing noble potential at least in the electrolyte solution than the electrode potential of the cathode tab, or a cathode electrode foil subjected to chemical treatment is used as the cathode electrode foil, so as to obtain an excellent leakage characteristic.
    Type: Application
    Filed: November 7, 2003
    Publication date: May 11, 2006
    Inventors: Masayuki Takeda, Makoto Ue, Masashi Ozawa
  • Publication number: 20060092597
    Abstract: An electrolyte for an electrolytic capacitor which is high in electrolytic conductivity, excellent in heat stability and high in withstand voltage. An electrolyte for an electrolytic capacitor comprising a tetrafluoroaluminate ion; and an electrolyte for an electrolytic capacitor containing a salt and a solvent, characterized in that electrolytic conductivity X (mS·cm?1) at 25° C. and withstand voltage Y (V) of a capacitor satisfy the relationships of formulae (I): Y??7.5X+150, and X?4, Y>0.
    Type: Application
    Filed: December 16, 2005
    Publication date: May 4, 2006
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Masayuki Takeda, Masahiro Takehara, Makoto Ue
  • Publication number: 20060085680
    Abstract: A network monitoring method and system reduces a load to a monitoring network without deteriorating accuracy of detecting a malfunction. A plurality of network constituent elements that constitute a communication network are connected to an operation system through a monitoring network. A health check for detecting a malfunction is periodically performed between a group of the network constituent elements positioned closed to each other within the communication network at a short monitoring period. A health check of malfunction detection on all of the network constituent elements is performed by the operation system at a long monitoring period longer than the short monitoring period.
    Type: Application
    Filed: December 3, 2004
    Publication date: April 20, 2006
    Inventors: Akinori Matsuno, Masayuki Takeda, Masayuki Hasegawa, Hirofumi Kitagawa, Toshimitsu Handa
  • Publication number: 20060007629
    Abstract: There are provided an aluminum electrolytic capacitor comprising an anode, a cathode comprising aluminum and an electrolytic solution containing an onium salt of fluorine-containing anion, wherein the electrolytic solution has a water concentration of 1% by weight or less, or wherein the cathode has a peak top of Al2p spectrum of 74.0 to 75.8 eV as measured by a method in which the surface of the cathode in the aluminum electrolytic capacitor heated at 125° C. for 50 hours is analyzed by X-ray photoelectron spectroscopy (XPS); an electrolytic solution for electrolytic capacitor comprising a quaternary cyclic amidinium tetrafluoroaluminate and a solvent and containing specific impurity compounds in a total amount of 0.6% by weight or less, and an electrolytic capacitor using the electrolytic solution; and a method for preparing an organic onium tetrafluoroaluminate which is advantageously m used in an aluminum electrolytic capacitor.
    Type: Application
    Filed: October 31, 2003
    Publication date: January 12, 2006
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Masayuki Takeda, Hiroo Miyauchi, Makoto Ue
  • Publication number: 20050269290
    Abstract: The present invention provides a surface-modified resist pattern which contains a resist pattern having low etch resistance by itself but having a modified and etch-resistant surface and is suitable for fine and high-definition patterning, and a method for efficiently forming the same. The method forms a surface-modified resist pattern having an etch-resistant surface by selectively depositing an organic compound on a resist pattern. The deposition is preferably carried out by using plasma of a gas. The method preferably includes arranging the organic compound so as to face the resist pattern, the organic compound having been deposited on a base material, and depositing the organic compound onto the resist pattern. The plasma of the gas is preferably introduced from an opposite side of the base material to the organic compound deposited thereon.
    Type: Application
    Filed: August 18, 2005
    Publication date: December 8, 2005
    Applicant: FUJITSU LIMITED
    Inventors: Koji Nozaki, Masayuki Takeda
  • Patent number: 6914768
    Abstract: An electrical double-layer capacitor showing a sleight increase of resistance when used under continuous application of high voltage and maintaining high energy residual ratio after standing for a long time includes an electrode element including a pair of electrodes disposed opposite to each other with a separator interposed therebetween, and is impregnated with a nonaqueous electrolyte solution prepared by dissolving quaternary ammonium salts into cyclic carbonates and containing impurities of 30 ppm or less of glycols, 30 ppm or less of primary alcohols and less than 20 ppm of tertiary amines. The water content may be 50 ppm or less. The quaternary ammonium salt may be triethylmethylammonium tetrafluoroborate. The cyclic carbonate may be propylene carbonate. The nonaqueous electrolyte solution may have a concentration of 0.1 to 2.5 mol/liter. The electrode may be a polarizable electrode composed of activated carbon.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: July 5, 2005
    Assignees: Honda Motor Co., Ltd., Mitsubishi Chemical Corporation
    Inventors: Yasuhiro Matsumoto, Kenji Sato, Masayuki Takeda, Hideo Nagaoka
  • Publication number: 20040130852
    Abstract: There is provided an electrical double-layer capacitor that shows only a small increase of resistance even when used under continuous application of high voltage, and has a high energy residual ratio after it is left standing for a long period of time. It includes an electrode element 3 which consists of a pair of electrodes 5 and 5 disposed opposite to each other with a separator 6 interposed therebetween and is impregnated with a nonaqueous electrolyte solution. The nonaqueous electrolyte solution is prepared by dissolving quaternary ammonium salts into cyclic carbonates. The impurities contained in the nonaqueous electrolyte solution impregnated into the electrode element 3 comprise 30 ppm or less of glycols, 30 ppm or less of primary alcohols and less than 20 ppm of tertiary amines, and the water content is 50 ppm or less. The quaternary ammonium salt is triethylmethylammonium tetrafluoroborate. The cyclic carbonate is propylene carbonate. The nonaqueous electrolyte solution has a concentration of 0.
    Type: Application
    Filed: November 25, 2003
    Publication date: July 8, 2004
    Inventors: Yasuhiro Matsumoto, Kenji Sato, Masayuki Takeda, Hideo Nagaoka
  • Publication number: 20040109263
    Abstract: A manufacturing method of a magnetic head includes a process for forming a lift-off mask pattern on a magnetoresistance effect element, such that the upper part of the lift-off mask pattern is larger in size than the lower part, a process for forming a couple of electrodes on the magnetoresistance effect element using the lift-off mask pattern as a mask, and a process for removing the lift-off mask pattern. The process for forming the lift-off mask pattern is performed according to a dry etching process.
    Type: Application
    Filed: March 27, 2003
    Publication date: June 10, 2004
    Inventors: Shoichi Suda, Masayuki Takeda, Keiji Watanabe
  • Publication number: 20040095708
    Abstract: An electrolyte for an electrolytic capacitor which is high in electrolytic conductivity, excellent in heat stability and high in withstand voltage. An electrolyte for an electrolytic capacitor comprising a tetrafluoroaluminate ion; and an electrolyte for an electrolytic capacitor containing a salt and a solvent, characterized in that electrolytic conductivity X (mS·cm−1) at 25° C. and withstand voltage Y (V) of a capacitor satisfy the relationships of formulae (I): Y≧−7.5X+150, and X≧4, Y>0.
    Type: Application
    Filed: November 12, 2003
    Publication date: May 20, 2004
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Masayuki Takeda, Masahiro Takehara, Makoto Ue
  • Publication number: 20030152838
    Abstract: An object of the present invention is to provide an electrolyte for an electrolytic capacitor, which is advantageous not only in that both electric conductivity and withstand voltage property are high, but also in that thermal stability is excellent, and an electrolytic capacitor using the electrolyte. Specifically, the present invention provides an electrolyte for an electrolytic capacitor, comprising a solvent, at least one quaternary amidinium salt selected from the group consisting of a quaternary amidinium salt of a hydroxy-substituted aromatic monocarboxylic acid and a quaternary amidinium salt of phthalic acid, and metal oxide particles, and an electrolytic capacitor using the electrolyte.
    Type: Application
    Filed: January 13, 2003
    Publication date: August 14, 2003
    Inventors: Masayuki Takeda, Takako Takahashi, Makoto Ue, Tsunori Tsuji, Masashi Ozawa
  • Patent number: 6566615
    Abstract: An interlocking type multi-switch device having plural push-buttons is disclosed wherein external connection terminals can be connected using a single connector and the reduction in switch size can be attained while ensuring a high contact reliability of contact portions. In a housing (1) having plural receptacle portions (1b) is formed a connecting groove (1e) for connecting together the receptacle portions (1b). Plural fixed contacts (3) disposed within the plural receptacle portions (1b) and connecting terminals (4) are integrally fixed to a single wafer (2) and are arranged side by side on one and same plane. The wafer (2) is brought into engagement with the connecting groove (1e) formed in the housing (1), thereby allowing the plural fixed contacts (3) to be disposed within the receptacle portions (1b).
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: May 20, 2003
    Assignee: Alps Electric Co., Ltd.
    Inventor: Masayuki Takeda
  • Patent number: 6559398
    Abstract: A switch device includes a first case and a second case. Stationary contacts are enclosed within the first case that is sealed by a cover. An operating lever configured to actuate a movable contact is partially received by a window hole within the cover. An engaging hook is unitary part of or is coupled to the outside surface of the second case. Stationary terminals project from the stationary contacts. The second case encloses the first case and the cover. The first case and the cover are made of resins having an arc resistance. The second case is made of a thermoplastic resin that is more flexible than the first case.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: May 6, 2003
    Assignee: Alps Electric Co., Ltd.
    Inventors: Masayuki Takeda, Toshiharu Mori
  • Publication number: 20020046933
    Abstract: An interlocking type multi-switch device having plural push-buttons is disclosed wherein external connection terminals can be connected using a single connector and the reduction in switch size can be attained while ensuring a high contact reliability of contact portions. In a housing 1 having plural receptacle portions 1b is formed a connecting groove 1e for connecting together the receptacle portions 1b. Plural fixed contacts 3 disposed within the plural receptacle portions 1b and connecting terminals 4 are integrally fixed to a single wafer 2 and are arranged side by side on one and same plane. The wafer 2 is brought into engagement with the connecting groove 1e formed in the housing 1, thereby allowing the plural fixed contacts 3 to be disposed within the receptacle portions 1b.
    Type: Application
    Filed: October 16, 2001
    Publication date: April 25, 2002
    Applicant: ALPS ELECTRIC CO., LTD.
    Inventor: Masayuki Takeda
  • Publication number: 20020011404
    Abstract: A switch device includes a first case and a second case. Stationary contacts are enclosed within the first case that is sealed by a cover. An operating lever configured to actuate a movable contact is partially received by a window hole within the cover. An engaging hook is unitary part of or is coupled to the outside surface of the second case. Stationary terminals project from the stationary contacts. The second case encloses the first case and the cover. The first case and the cover are made of resins having an arc resistance. The second case is made of a thermoplastic resin that is more flexible than the first case.
    Type: Application
    Filed: April 17, 2001
    Publication date: January 31, 2002
    Inventors: Masayuki Takeda, Toshiharu Mori
  • Patent number: 6271891
    Abstract: A video signal processing circuit in which nearly 100% of a largest possible dynamic range can be used, desired contrast is obtained, and desired brightness characteristics are obtained by an increasing in luminance of a screen. The circuit has an RGB amplifier which amplifies three primary color video signals R, G, and B by a predetermined gain and in which the gain is controlled by a gain control signal, A/D converters for converting analog three primary color video signals which are generated from the RGB amplifier into digital signals respectively, inverse gamma correcting circuits for effecting an inverse gamma correction to the three primary color digital video signals respectively, an OR circuit and a peak holding circuit for detecting peak levels of the analog three primary color signals, and a gain control signal generator for generating a gain control signal in accordance with the peak levels.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: August 7, 2001
    Assignee: Pioneer Electronic Corporation
    Inventors: Shuji Ogawa, Hirofumi Kawaguchi, Nozomu Kikuchi, Junichi Usui, Masayuki Takeda
  • Patent number: 6215080
    Abstract: A connecting structure in a switch device with AC inlet is disclosed wherein, when terminals of the switch device are connected together using a thin metallic connecting strip, there is no fear of an external force on the terminals causing damage to the connection between the terminals and the connecting strip and resulting in unstable contact, and which, even at different thermal expansion coefficients in a power ON condition, ensures a stably held state of the connecting strip and can afford excellent assemblability and reliability of connection.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: April 10, 2001
    Assignee: Alps Electric Company
    Inventors: Toshiharu Mori, Masayuki Takeda, Yoshimi Goto, Yoshio Tanabe
  • Patent number: 6201197
    Abstract: A connecting structure in a switch device with AC inlets is disclosed wherein, when terminals of the switch device are connected together using a thin metallic connecting strip, there is no fear of an external force being imposed on the terminals and causing damage to the connection between the terminals and the connecting strip, nor is there any fear of unstable contact, and which can keep a terminal holding position of the bracket stable and is superior in assemblability and reliability of connection. The switch device comprises AC inlets having a connecting pin for AC input and an inlet terminal for connection, an AC switch having a connecting-side terminal and an output-side terminal, a metallic connecting strip for electrically connecting the inlet terminal of the AC inlets and the connecting-side terminal of the AC switch with each other, and a bracket with the AC inlets and the AC switch attached thereto.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: March 13, 2001
    Assignee: Alps Electric Co., Ltd.
    Inventors: Toshiharu Mori, Masayuki Takeda, Yoshimi Goto