Patents by Inventor Shigeru Uzawa
Shigeru Uzawa 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: 7667953Abstract: An electrolytic solution, for use in an electrolytic capacitor, comprising a solvent and a solute wherein water accounts for 20 to 100% by weight of the solvent and the total solute content is from 1.5 to 44% by weight, and an electrolytic capacitor comprising a capacitor element, a case containing the capacitor element, and a sealant with which the case is sealed, the capacitor element comprising a pair of electrode foils each comprising a dielectric, a separator for isolating the electrode foils from each other, and the above electrolytic solution filled between the electrode foils.Type: GrantFiled: September 27, 2004Date of Patent: February 23, 2010Assignee: Rubycon CorporationInventors: Shigeru Uzawa, Akihiko Komatsu, Tetsushi Ogawara, Yoshishige Sakurai
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Patent number: 7660101Abstract: The electrical properties and high-temperature characteristics of an electrolytic capacitor are rendered satisfactory by addition of a compound with an unsaturated bond-containing chain which serves to absorb hydrogen gas generated by reaction between the aluminum electrode foil and the electrolyte solution. The electrolytic capacitor contains the unsaturated compound which allows hydrogen addition, or the electrolytic solution, which comprises a solvent composed of 10-80 wt % of an organic solvent and 90-20 wt % water and at least one electrolyte selected from the group consisting of carboxylic acids or their salts and inorganic acids or their salts, also comprises one or more unsaturated compounds which are water-soluble or soluble in polar and protic polar solvents.Type: GrantFiled: March 27, 2007Date of Patent: February 9, 2010Assignee: Rubycon CorporationInventors: Akihiko Komatsu, Toshikazu Iida, Takashi Nozawa, Taketo Matsuzawa, Tetsushi Ogawara, Shigeru Uzawa
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Patent number: 7539006Abstract: An electrolytic capacitor using an electrolytic solution constituted by a solvent consisting of from 20 to 80 wt % of an organic solvent and from 80 to 20 wt % of water, the electrolytic capacitor comprising a nitro or nitroso compound except for nitrophenol, nitrobenzoic acid, dinitrobenzoic acid, nitrophenone and nitroanisole, in a portion inside the capacitor other than in the electrolytic solution. The electrolytic capacitor exhibits a low impedance, excellent low temperature stability and good life characteristics, and further, is excellent in the effect to absorb a hydrogen gas, even when use is made of an electrolyte solution employing mixed solvent having a great water content and when an electrolytic capacitor is used under a high temperature condition.Type: GrantFiled: October 4, 2006Date of Patent: May 26, 2009Assignee: Rubycon CorporationInventors: Akihiko Komatsu, Tetsushi Ogawara, Shigeru Uzawa
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Patent number: 7279117Abstract: The electrical properties and high-temperature characteristics of an electrolytic capacitor are rendered satisfactory by addition of a compound with an unsaturated bond-containing chain which serves to absorb hydrogen gas generated by reaction between the aluminum electrode foil and the electrolyte solution. The electrolytic capacitor contains the unsaturated compound which allows hydrogen addition, or the electrolytic solution, which comprises a solvent composed of 10-80 wt % of an organic solvent and 90-20 wt % water and at least one electrolyte selected from the group consisting of carboxylic acids or their salts and inorganic acids or their salts, also comprises one or more unsaturated compounds which are water-soluble or soluble in polar and protic polar solvents.Type: GrantFiled: December 27, 2002Date of Patent: October 9, 2007Assignee: Rubycon CorporationInventors: Akihiko Komatsu, Toshikazu Iida, Takashi Nozawa, Taketo Matsuzawa, Tetsushi Ogawara, Shigeru Uzawa
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Publication number: 20070171595Abstract: The electrical properties and high-temperature characteristics of an electrolytic capacitor are rendered satisfactory by addition of a compound with an unsaturated bond-containing chain which serves to absorb hydrogen gas generated by reaction between the aluminum electrode foil and the electrolyte solution. The electrolytic capacitor contains the unsaturated compound which allows hydrogen addition, or the electrolytic solution, which comprises a solvent composed of 10-80 wt % of an organic solvent and 90-20 wt % water and at least one electrolyte selected from the group consisting of carboxylic acids or their salts and inorganic acids or their salts, also comprises one or more unsaturated compounds which are water-soluble or soluble in polar and protic polar solvents.Type: ApplicationFiled: March 27, 2007Publication date: July 26, 2007Applicant: RUBYCON CORPORATIONInventors: Akihiko Komatsu, Toshikazu Iida, Takashi Nozawa, Taketo Matsuzawa, Tetsushi Ogawara, Shigeru Uzawa
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Publication number: 20070121276Abstract: An electrolytic solution, for use in an electrolytic capacitor, comprising a solvent and a solute wherein water accounts for 20 to 100% by weight of the solvent and the total solute content is from 1.5 to 44% by weight, and an electrolytic capacitor comprising a capacitor element, a case containing the capacitor element, and a sealant with which the case is sealed, the capacitor element comprising a pair of electrode foils each comprising a dielectric, a separator for isolating the electrode foils from each other, and the above electrolytic solution filled between the electrode foils.Type: ApplicationFiled: September 27, 2004Publication date: May 31, 2007Applicant: RUBYCON CORPORATIONInventors: Shigeru Uzawa, Akihiko Komatsu, Tetsushi Ogawara, Yoshishige Sakurai
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Publication number: 20070029529Abstract: An electrolyte solution for driving an electrolytic capacitor having a solvent composed of 20 to 80 wt % of an organic solvent and 80 to 20 wt % of water, characterized in that it comprises one or more nitro compounds or nitroso compounds exclusive of nitrophenol, nitrobenzoic acid, dinitrobenzoic acid, nitroacetophenone and nitroanisole; an electrolytic capacitor comprising the electrolyte solution for driving an electrolytic capacitor; and an electrolytic capacitor comprising one or more nitro compounds or nitroso compounds located at another portion than an electrolyte solution therein. The electrolyte solution preferably contains a carboxylic acid or a salt thereof or an inorganic acid or a salt thereof as an electrolyte.Type: ApplicationFiled: October 4, 2006Publication date: February 8, 2007Inventors: Akihiko Komatsu, Tetsushi Ogawara, Shigeru Uzawa
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Patent number: 6919240Abstract: The present invention relates to a method of manufacturing a flat aluminum electrolytic capacitor comprising a separator impregnated with an electrolytic solution, an anode foil and a cathode foil, a flat capacitor element that has external lead-out terminals connected respectively to the anode foil and the cathode foil, and a flexible casing that houses the capacitor element and is hermetically sealed, said method comprising the steps of encasing the capacitor element in the flexible casing and applying aging treatment before hermetically sealing the casing, and hermetically sealing the flexible casing, and also relates to a flat aluminum electrolytic capacitor comprising a separator impregnated with the electrolytic solution, the anode foil and the cathode foil, the flat capacitor element that has the external lead-out terminals connected respectively to the anode foil and the cathode foil, and the flexible casing that houses the capacitor element and is hermetically sealed, wherein the electrolytic capacitType: GrantFiled: May 11, 2004Date of Patent: July 19, 2005Assignee: Rubycon CorporationInventors: Shigeru Uzawa, Yoshiki Makino, Katsuhisa Kamakura, Yuuichi Kobayashi, Akihiko Komatsu, Taketo Matsuzawa
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Patent number: 6882519Abstract: The present invention relates to a method of manufacturing a flat aluminum electrolytic capacitor comprising a separator impregnated with an electrolytic solution, an anode foil and a cathode foil, a flat capacitor element that has external lead-out terminals connected respectively to the anode foil and the cathode foil, and a flexible casing that houses the capacitor element and is hermetically sealed, said method comprising the steps of encasing the capacitor element in the flexible casing and applying aging treatment before hermetically sealing the casing, and hermetically sealing the flexible casing, and also relates to a flat aluminum electrolytic capacitor comprising a separator impregnated with the electrolytic solution, the anode foil and the cathode foil, the flat capacitor element that has the external lead-out terminals connected respectively to the anode foil and the cathode foil, and the flexible casing that houses the capacitor element and is hermetically sealed, wherein the electrolytic capacitType: GrantFiled: September 19, 2003Date of Patent: April 19, 2005Assignee: Rubycon CorporationInventors: Shigeru Uzawa, Yoshiki Makino, Katsuhisa Kamakura, Yuuichi Kobayashi, Akihiko Komatsu, Taketo Matsuzawa
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Publication number: 20040246655Abstract: The present invention relates to a method of manufacturing a flat aluminum electrolytic capacitor comprising a separator impregnated with an electrolytic solution, an anode foil and a cathode foil, a flat capacitor element that has external lead-out terminals connected respectively to the anode foil and the cathode foil, and a flexible casing that houses the capacitor element and is hermetically sealed, said method comprising the steps of encasing the capacitor element in the flexible casing and applying aging treatment before hermetically sealing the casing, and hermetically sealing the flexible casing, and also relates to a flat aluminum electrolytic capacitor comprising a separator impregnated with the electrolytic solution, the anode foil and the cathode foil, the flat capacitor element that has the external lead-out terminals connected respectively to the anode foil and the cathode foil, and the flexible casing that houses the capacitor element and is hermetically sealed, wherein the electrolytic capacitType: ApplicationFiled: September 19, 2003Publication date: December 9, 2004Applicant: RUBYCON CORPORATIONInventors: Shigeru Uzawa, Yoshiki Makino, Katsuhisa Kamakura, Yuuichi Kobayashi, Akihiko Komatsu, Taketo Matsuzawa
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Publication number: 20040207974Abstract: The present invention relates to a method of manufacturing a flat aluminum electrolytic capacitor comprising a separator impregnated with an electrolytic solution, an anode foil and a cathode foil, a flat capacitor element that has external lead-out terminals connected respectively to the anode foil and the cathode foil, and a flexible casing that houses the capacitor element and is hermetically sealed, said method comprising the steps of encasing the capacitor element in the flexible casing and applying aging treatment before hermetically sealing the casing, and hermetically sealing the flexible casing, and also relates to a flat aluminum electrolytic capacitor comprising a separator impregnated with the electrolytic solution, the anode foil and the cathode foil, the flat capacitor element that has the external lead-out terminals connected respectively to the anode foil and the cathode foil, and the flexible casing that houses the capacitor element and is hermetically sealed, wherein the electrolytic capacitType: ApplicationFiled: May 11, 2004Publication date: October 21, 2004Applicant: RUBYCON CORPORATIONInventors: Shigeru Uzawa, Yoshiki Makino, Katsuhisa Kamakura, Yuuichi Kobayashi, Akihiko Komatsu, Taketo Matsuzawa
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Patent number: 6549632Abstract: A microphone in which a diaphragm which is vibrated by a sound wave received, and a conversion portion such as a magnetic circuit for electrically acting on the diaphragm to convert the vibration into an electric signal are incorporated into a unit case, wherein a first elastic body and a second elastic body are arranged on the upper surface and the lower surface, respectively, of an peripheral edge portion of the diaphragm, the diaphragm is mounted on the unit case through the first elastic body on the upper surface of the peripheral edge portion thereof, and one end side of the conversion portion is placed in contact with the second elastic body arranged on the lower surface of the peripheral edge portion of diaphragm to encase the conversion portion into the unit case.Type: GrantFiled: March 19, 1997Date of Patent: April 15, 2003Assignee: Kabushiki Kaisha Audio-TechnicaInventors: Hiroshi Akino, Bob Green, Shioto Okita, Kazuhisa Kondo, Shigeru Uzawa
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Patent number: 6130952Abstract: A microphone in which a diaphragm which is vibrated by a sound wave received, and a conversion portion such as a magnetic circuit for electrically acting on the diaphragm to convert the vibration into an electric signal are incorporated into a unit case, wherein a first elastic body and a second elastic body are arranged on the upper surface and the lower surface, respectively, of an peripheral edge portion of the diaphragm, the diaphragm is mounted on the unit case through the first elastic body on the upper surface of the peripheral edge portion thereof, and one end side of the conversion portion is placed in contact with the second elastic body arranged on the lower surface of the peripheral edge portion of diaphragm to encase the conversion portion into the unit case.Type: GrantFiled: October 15, 1997Date of Patent: October 10, 2000Assignee: Kabushiki Kaisha Audio-TechnicaInventors: Hiroshi Akino, Bob Green, Shioto Okita, Kazuhisa Kondo, Shigeru Uzawa
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Patent number: 5792755Abstract: The invention relates to insecticidal compositions which compriseA) inorganic or organic ammonium salts of the formula I ##STR1## in combination with at least one compound from the group consisting of the compounds silafluofen (4-ethoxyphenyl-?3-(4-fluoro-3-phenoxyphenyl)propyl!dimethylsilane), MTI-723, imidacloprid, ethofenprox (Trebon, MTI-500, (2-(4- ethoxyphenyl)-2-methylpropyl-3-phenoxybenzyl ether), PP 682 (ICI-A5682), T1304, natural or synthetic pyrethroids and phosphorothioates.Type: GrantFiled: January 18, 1995Date of Patent: August 11, 1998Assignee: Hoechst AktiengesellschaftInventors: Alfons Sagenmuller, Hans-Herbert Schubert, Shigeru Uzawa, Kenichi Saito
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Patent number: 5703132Abstract: The invention relates to insecticidal compositions which compriseA) inorganic or organic ammonium salts of the formula I ##STR1## in combination with at least one compound from the group consisting of the compounds silafluofen (4-ethoxyphenyl-?3-(4-fluoro-3-phenoxyphenyl)propyl!dimethylsilane), MTI-732, imidacloprid, ethofenprox (Trebon, MTI-500, (2-(4-ethoxyphenyl)-2-methylpropyl-3-phenoxybenzyl ether), PP 682 (ICI-A5682), TI304, natural or synthetic pyrethroids and phosphorothioates.Type: GrantFiled: November 21, 1996Date of Patent: December 30, 1997Assignee: Hoechst Schering AgrEvo GmbHInventors: Alfons Sagenmuller, Hans-Herbert Schubert, Shigeru Uzawa, Kenichi Saito
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Patent number: 5148492Abstract: There is a dynamic microphone comprising: a diaphragm which can vibrate by an acoustic wave and a voice coil which is joined to the diaphragm so as to transverse a magnetic field formed by the magnet and can vibrate integratedly with the diaphragm, wherein a number of peripheral treatment agents for damping are coated in a dot shape or a discontinuous stripe shape at intervals onto either one of the front surface and the back surface of the portion of the diaphragm excluding the center dome. With the above construction, a change in stiffness of the diaphragm by the peripheral treatment agents is extremely reduced, it is prevented that the diaphragm resonates at a special frquency, a sudden attenuation of the low frequency limit is prevented, and a low sound can be also certainly collected.Type: GrantFiled: March 14, 1991Date of Patent: September 15, 1992Assignee: Kabushiki Kaisha Audio-TechnicaInventors: Shigeru Uzawa, Yoshio Kikuti
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Patent number: 4710509Abstract: Novel substituted phenylsulfonylazoles of the formula (I) ##STR1## wherein X represents N or a CH-group,R represents halogen, lower alkyl, lower alkoxy, trifluoromethyl, nitrol, optionally halogeno-substituted phenyl or cycloalkyl, andn represents 2 or 3, and furthermore, in case that R is not a methyl group, also represents 1,and the use of the new compounds as agricultural and horticultural fungicides.Type: GrantFiled: June 20, 1986Date of Patent: December 1, 1987Assignee: Nihon Tokushu Noyaku Seizo K. K.Inventors: Junichi Saito, Tatsuo Tamura, Yoshio Kurahashi, Shigeru Uzawa, Noboru Matsumoto, Naoko Yamaguchi