Patents by Inventor Makoto Ue
Makoto Ue 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).
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Patent number: 8323839Abstract: A nonaqueous electrolyte secondary battery in which the decomposition of an electrolyte solution is reduced exhibits high coulombic efficiency and excellent charge and discharge cycle performance, and has high energy density. This nonaqueous electrolyte secondary battery includes a negative electrode that is formed by depositing a thin film of active material on a collector by a CVD method, sputtering, evaporation, thermal spraying, or plating, wherein the thin film of the active material can lithiate and delithiate and is divided into columns by cracks formed in the thickness direction, and the bottom of each column is adhered to the collector; a positive electrode that can lithiate and delithiate; and a nonaqueous electrolyte solution containing a lithium salt in a nonaqueous solvent. The electrolyte solution contains a compound expressed by a general formula (I).Type: GrantFiled: September 26, 2005Date of Patent: December 4, 2012Assignees: SANYO Electric Co., Ltd., Mitsubishi Chemical CorporationInventors: Noriyuki Tamura, Toshikazu Yoshida, Maruo Kamino, Shin Fujitani, Masahiro Takehara, Makoto Ue
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Patent number: 7724501Abstract: 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: GrantFiled: July 26, 2007Date of Patent: May 25, 2010Assignees: Nippon Chemi-Con Corporation, Mitsubishi Chemical CorporationInventors: Masahi Ozawa, Masayuki Takeda, Makoto Ue
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Patent number: 7492572Abstract: 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: GrantFiled: November 7, 2003Date of Patent: February 17, 2009Assignees: Nippon Chemi-Con Corporation, Mitsubishi Chemical CorporationInventors: Masashi Ozawa, Masayuki Takeda, Makoto Ue
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Patent number: 7460357Abstract: 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: GrantFiled: December 16, 2005Date of Patent: December 2, 2008Assignee: Mitsubishi Chemical CorporationInventors: Masayuki Takeda, Masahiro Takehara, Makoto Ue
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Patent number: 7430108Abstract: Electrolyte solution and an electrolytic capacitor using it having a low impedance characteristic, having a high withstand voltage characteristic of 100V class, and a high temperature life characteristic is provided. The electrolyte solution containing an aluminum tetrafluoride salt, and a solvent with high boiling point, such as sulfolane, 3-methyl sulfolane, and 2,4-dimethyl sulfolane, and the like are 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.Type: GrantFiled: November 7, 2003Date of Patent: September 30, 2008Assignees: Nippon Chemi-con Corporation, Mitsubishi Chemical CorporationInventors: Masashi Ozawa, Minoru Wada, Masayuki Takeda, Makoto Ue
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Patent number: 7397651Abstract: 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 used in an aluminum electrolytic capacitor.Type: GrantFiled: April 11, 2007Date of Patent: July 8, 2008Assignee: Mitsubishi Chemical CorporationInventors: Masayuki Takeda, Hiroo Miyauchi, Makoto Ue
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Publication number: 20080070123Abstract: A nonaqueous electrolyte secondary battery in which the decomposition of an electrolyte solution is reduced exhibits high coulombic efficiency and excellent charge and discharge cycle performance, and has high energy density. This nonaqueous electrolyte secondary battery includes a negative electrode that is formed by depositing a thin film of active material on a collector by a CVD method, sputtering, evaporation, thermal spraying, or plating, wherein the thin film of the active material can lithiate and delithiate and is divided into columns by cracks formed in the thickness direction, and the bottom of each column is adhered to the collector; a positive electrode that can lithiate and delithiate; and a nonaqueous electrolyte solution containing a lithium salt in a nonaqueous solvent. The electrolyte solution contains a compound expressed by a general formula (I).Type: ApplicationFiled: November 14, 2007Publication date: March 20, 2008Applicants: SANYO ELECTRIC CO., LTD., MITSUBISHI CHEMICAL CORPORATIONInventors: Noriyuki Tamura, Toshikazu Yoshida, Maruo Kamino, Shin Fujitani, Masahiro Takehara, Makoto Ue
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Publication number: 20080030926Abstract: 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. Moreover, the ceramics coating layer or the insulating synthetic resin layer is formed at a contact portion with the sealing component of the rivet or the cathode leading means. Alternatively, a partial cross-linking peroxide butyl rubber that added peroxide as cross-linking agent to a butyl rubber polymer comprised of isobutylene, isoprene, and divinylbenzene copolymer is used as the sealing member. The electrolytic capacitor of the present invention has a low impedance characteristic, a high withstand voltage characteristic, and an excellent high temperature life characteristic.Type: ApplicationFiled: July 10, 2007Publication date: February 7, 2008Inventors: Masashi OZAWA, Masayuki TAKEDA, Makoto Ue
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Publication number: 20080019079Abstract: 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: ApplicationFiled: July 26, 2007Publication date: January 24, 2008Applicants: NIPPON CHEMI-CON CORPORATION, MITSUBISHI CHEMICAL CORPORATIONInventors: Masashi Ozawa, Masayuki Takeda, Makoto Ue
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Patent number: 7295424Abstract: 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 used in an aluminum electrolytic capacitor.Type: GrantFiled: April 11, 2007Date of Patent: November 13, 2007Assignee: Mitsubishi Chemical CorporationInventors: Masayuki Takeda, Hiroo Miyauchi, Makoto Ue
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Patent number: 7262953Abstract: 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: GrantFiled: November 7, 2003Date of Patent: August 28, 2007Assignees: Nippon Chemi-Con Corporation, Mitsubishi Chemical CorporationInventors: Masashi Ozawa, Masayuki Takeda, Makoto Ue
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Publication number: 20070188979Abstract: 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 used in an aluminum electrolytic capacitor.Type: ApplicationFiled: April 11, 2007Publication date: August 16, 2007Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Masayuki Takeda, Hiroo Miyauchi, Makoto Ue
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Publication number: 20070188977Abstract: 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 used in an aluminum electrolytic capacitor.Type: ApplicationFiled: April 11, 2007Publication date: August 16, 2007Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Masayuki Takeda, Hiroo Miyauchi, Makoto Ue
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Patent number: 7256983Abstract: An electrolytic capacitor having a low impedance characteristic, and a high withstand voltage characteristic in the 100V class, provides excellent high temperature life and leakage characteristics. An electrolyte solution containing an aluminum tetrafluoride salt is used. Moreover, a ceramics coating layer or an insulating synthetic resin layer is formed at a contact portion with a sealing component of a rivet or a cathode leading means. Alternatively, a partial cross-linking peroxide butyl rubber with added peroxide as a cross-linking agent to a butyl rubber polymer containing isobutylene, isoprene, and divinylbenzene copolymer is used as the sealing member. The electrolytic capacitor of the present invention has a low impedance characteristic, a high withstand voltage characteristic, and an excellent high temperature life characteristic.Type: GrantFiled: November 7, 2003Date of Patent: August 14, 2007Assignees: Nippon Chemi-Con Corporation, Mitsubishi Chemical CorporationInventors: Masashi Ozawa, Masayuki Takeda, Makoto Ue
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Patent number: 7227738Abstract: 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 used in an aluminum electrolytic capacitor.Type: GrantFiled: October 31, 2003Date of Patent: June 5, 2007Assignee: Mitsubishi Chemical CorporationInventors: Masayuki Takeda, Hiroo Miyauchi, Makoto Ue
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Patent number: 7144660Abstract: A non-aqueous electrolyte solution that contains an organic solvent, and a lithium salt and an electrolyte, that is useful for the preparation of a secondary battery that is equipped with a negative electrode and a positive electrode, each of which is capable of storing and releasing lithium, wherein the non-aqueous electrolyte solution contains partially hydrogenated terphenyl that is a mixture of two or more compounds of which one is diphenylcyclohexane that is present in an amount ranging from 10 to 65 wt % of the partially hydrogenated terphenyl and the partially hydrogenated terphenyl has a solubility of not less than 0.5 wt % in the electrolyte solution at room temperature.Type: GrantFiled: March 27, 2003Date of Patent: December 5, 2006Assignee: Mitsubishi Chemical CorporationInventors: Kunihisa Shima, Kenji Shizuka, Makoto Ue
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Publication number: 20060250751Abstract: Electrolyte solution and an electrolytic capacitor using it having a low impedance characteristic, having a high withstand voltage characteristic of 100 V class, and a high temperature life characteristic is provided. The electrolyte solution containing an aluminum tetrafluoride salt, and a solvent with high boilling point, such as sulfolane, 3-methyl sulfolane, and 2,4-dimethyl sulfolane, and the like are used. The electrolytic capacitor of the present invention has the low impedance characteristic, the high withstand voltage characteristic, and the excellent high temperature life characteristic.Type: ApplicationFiled: November 7, 2003Publication date: November 9, 2006Inventors: Masashi Ozawa, Minoru Wada, Masayuki Takeda, Makoto Ue
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Publication number: 20060164791Abstract: 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. Moreover, the ceramics coating layer or the insulating synthetic resin layer is formed at a contact portion with the sealing component of the rivet or the cathode leading means. Alternatively, a partial cross-linking peroxide butyl rubber that added peroxide as cross-linking agent to a butyl rubber polymer comprised of isobutylene, isoprene, and divinylbenzene copolymer is used as the sealing member. The electrolytic capacitor of the present invention has a low impedance characteristic, a high withstand voltage characteristic, and an excellent high temperature life characteristic.Type: ApplicationFiled: November 7, 2003Publication date: July 27, 2006Inventors: Masashi Ozawa, Masayuki Takeda, Makoto Ue
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Patent number: 7079378Abstract: 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: GrantFiled: March 27, 2001Date of Patent: July 18, 2006Assignees: Nippon Chemi-Con Corporation, Mitsubishi Chemical CorporationInventors: Masayuki Takeda, Takako Takahashi, Makoto Ue, Tatsunori Tsuji, Masashi Ozawa
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Publication number: 20060152882Abstract: 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: ApplicationFiled: November 7, 2003Publication date: July 13, 2006Inventors: Masayuki Takeda, Makoto Ue, Masashi Ozawa