Patents by Inventor Masashi Ozawa
Masashi Ozawa 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: 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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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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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: 20060241467Abstract: An ultrasonic probe according to the present invention includes: an ultrasonic element for transmitting and receiving an ultrasonic signal; a signal line for transmitting an electric signal to or from the ultrasonic element; and a ground line for supplying a ground potential to the ultrasonic element. The ultrasonic element is connected electrically with a sensor signal substrate and a sensor ground substrate. These substrates are connected electrically with the signal line and the ground line, respectively, via a cable substrate. The sensor ground substrate and the cable substrate are connected directly or via a relay ground substrate.Type: ApplicationFiled: March 24, 2004Publication date: October 26, 2006Inventors: Junichi Takeda, Masashi Ozawa
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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
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Publication number: 20060127566Abstract: 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: ApplicationFiled: November 7, 2003Publication date: June 15, 2006Applicant: Nippon Chemi-Con CorporationInventors: Masashi Ozawa, Masayuki Takeda, Makoto Ue
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Patent number: 7054140Abstract: There are provided a solid electrolytic capacitor having a low ESR characteristic and an electrode foil to be used for this electrolytic capacitor. In accordance with the present invention, a capacitor element uses an anode foil with a post-etching void factor of not more than 51% or a cathode foil with another post-etching void factor of not more than 44%, wherein the capacitor element contains a solvent consisting mainly of a water and a water-soluble metal complex being bonded with phosphoric acid ions, whereby the electrode foil increases in conductivity and decreases in resistivity, while an electrolytic solution thereof has a low resistivity, to thereby obtain the solid electrolytic capacitor having the low ESR characteristic and the electrode foil to be used therefor.Type: GrantFiled: May 30, 2002Date of Patent: May 30, 2006Assignee: Nippon Chemi-Con Corp.Inventors: Masashi Ozawa, Tatsunori Tsuji, Akio Ishii, Kazuhiro Saegusa, Kazuhiro Higuchi, Akihiro Inoue
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Publication number: 20060098384Abstract: 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: November 7, 2003Publication date: May 11, 2006Inventors: Masayuki Takeda, Makoto Ue, Masashi Ozawa
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Publication number: 20040212950Abstract: There are provided a solid electrolytic capacitor having a low ESR characteristic and an electrode foil to be used for this electrolytic capacitor. In accordance with the present invention, a capacitor element uses an anode foil with a post-etching void factor of not more than 51% or a cathode foil with another post-etching void factor of not more than 44%, wherein the capacitor element contains a solvent consisting mainly of a water and a water-soluble metal complex being bonded with phosphoric acid ions, whereby the electrode foil increases in conductivity and decreases in resistivity, while an electrolytic solution thereof has a low resistivity, to thereby obtain the solid electrolytic capacitor having the low ESR characteristic and the electrode foil to be used therefor.Type: ApplicationFiled: December 1, 2003Publication date: October 28, 2004Inventors: Masashi Ozawa, Tatsunori Tsuji, Akio Ishii, Kazuhiro Saegusa, Kazuhiro Higuchi, Akihiro Inoue
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Patent number: 6742374Abstract: A method is disclosed for partly reinforcing a workpiece which is capable of reinforcing the reinforcement requiring part of the workpiece on which stress is liable to be concentrated upon use of the workpiece. A workpiece 1 made of metal having a reinforcement requiring part 10 and a forming die 3 are provided. The reinforcement requiring part 10 of the workpiece 1 is heated up to a higher temperature than the other part 18. The reinforcement-requiring part 10 is quenched and reinforced as compared to the other part 18 by bringing the forming surface area of the forming die 3 into direct contact with at least the reinforcement-requiring part 10 of the workpiece 1 which is then strongly pressed.Type: GrantFiled: February 19, 2002Date of Patent: June 1, 2004Inventor: Masashi Ozawa
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Publication number: 20030152838Abstract: 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: ApplicationFiled: January 13, 2003Publication date: August 14, 2003Inventors: Masayuki Takeda, Takako Takahashi, Makoto Ue, Tsunori Tsuji, Masashi Ozawa
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Patent number: 6493211Abstract: An electrolyte having a high conductivity, an excellent high-temperature life characteristic and leading to improvement of the shelf characteristic of an aluminum electrolytic capacitor. At least one phosphate ion producing compound and a chelating agent are added using a solvent largely composed of water. Therefor, an aluminum electrolytic capacitor comprising such an electrolyte has a low impedance, an excellent high-temperature life characteristic, and an improved shelf characteristic.Type: GrantFiled: September 17, 2001Date of Patent: December 10, 2002Assignee: Nippon Chemi-Con CorporationInventors: Takayuki Sugiyama, Masashi Ozawa, Hidehiko Itoh, Kenji Tamamitsu, Masao Sakakura
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Publication number: 20020113041Abstract: A method is disclosed for partly reinforcing a workpiece which is capable of reinforcing the reinforcement requiring part of the workpiece on which stress is liable to be concentrated upon use of the workpiece. A workpiece 1 made of metal having a reinforcement requiring part 10 and a forming die 3 are provided. The reinforcement requiring part 10 of the workpiece 1 is heated up to a higher temperature than the other part 18. The reinforcement-requiring part 10 is quenched and reinforced as compared to the other part 18 by bringing the forming surface area of the forming die 3 into direct contact with at least the reinforcement-requiring part 10 of the workpiece 1 which is then strongly pressed.Type: ApplicationFiled: February 19, 2002Publication date: August 22, 2002Inventor: Masashi Ozawa