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).

  • Patent number: 7667953
    Abstract: 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: Grant
    Filed: September 27, 2004
    Date of Patent: February 23, 2010
    Assignee: Rubycon Corporation
    Inventors: Shigeru Uzawa, Akihiko Komatsu, Tetsushi Ogawara, Yoshishige Sakurai
  • Patent number: 7660101
    Abstract: 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: Grant
    Filed: March 27, 2007
    Date of Patent: February 9, 2010
    Assignee: Rubycon Corporation
    Inventors: Akihiko Komatsu, Toshikazu Iida, Takashi Nozawa, Taketo Matsuzawa, Tetsushi Ogawara, Shigeru Uzawa
  • Patent number: 7539006
    Abstract: 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: Grant
    Filed: October 4, 2006
    Date of Patent: May 26, 2009
    Assignee: Rubycon Corporation
    Inventors: Akihiko Komatsu, Tetsushi Ogawara, Shigeru Uzawa
  • Patent number: 7279117
    Abstract: 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: Grant
    Filed: December 27, 2002
    Date of Patent: October 9, 2007
    Assignee: Rubycon Corporation
    Inventors: Akihiko Komatsu, Toshikazu Iida, Takashi Nozawa, Taketo Matsuzawa, Tetsushi Ogawara, Shigeru Uzawa
  • Publication number: 20070171595
    Abstract: 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: Application
    Filed: March 27, 2007
    Publication date: July 26, 2007
    Applicant: RUBYCON CORPORATION
    Inventors: Akihiko Komatsu, Toshikazu Iida, Takashi Nozawa, Taketo Matsuzawa, Tetsushi Ogawara, Shigeru Uzawa
  • Publication number: 20070121276
    Abstract: 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: Application
    Filed: September 27, 2004
    Publication date: May 31, 2007
    Applicant: RUBYCON CORPORATION
    Inventors: Shigeru Uzawa, Akihiko Komatsu, Tetsushi Ogawara, Yoshishige Sakurai
  • Publication number: 20070029529
    Abstract: 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: Application
    Filed: October 4, 2006
    Publication date: February 8, 2007
    Inventors: Akihiko Komatsu, Tetsushi Ogawara, Shigeru Uzawa
  • Patent number: 6919240
    Abstract: 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 capacit
    Type: Grant
    Filed: May 11, 2004
    Date of Patent: July 19, 2005
    Assignee: Rubycon Corporation
    Inventors: Shigeru Uzawa, Yoshiki Makino, Katsuhisa Kamakura, Yuuichi Kobayashi, Akihiko Komatsu, Taketo Matsuzawa
  • Patent number: 6882519
    Abstract: 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 capacit
    Type: Grant
    Filed: September 19, 2003
    Date of Patent: April 19, 2005
    Assignee: Rubycon Corporation
    Inventors: Shigeru Uzawa, Yoshiki Makino, Katsuhisa Kamakura, Yuuichi Kobayashi, Akihiko Komatsu, Taketo Matsuzawa
  • Publication number: 20040246655
    Abstract: 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 capacit
    Type: Application
    Filed: September 19, 2003
    Publication date: December 9, 2004
    Applicant: RUBYCON CORPORATION
    Inventors: Shigeru Uzawa, Yoshiki Makino, Katsuhisa Kamakura, Yuuichi Kobayashi, Akihiko Komatsu, Taketo Matsuzawa
  • Publication number: 20040207974
    Abstract: 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 capacit
    Type: Application
    Filed: May 11, 2004
    Publication date: October 21, 2004
    Applicant: RUBYCON CORPORATION
    Inventors: Shigeru Uzawa, Yoshiki Makino, Katsuhisa Kamakura, Yuuichi Kobayashi, Akihiko Komatsu, Taketo Matsuzawa
  • Patent number: 6549632
    Abstract: 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: Grant
    Filed: March 19, 1997
    Date of Patent: April 15, 2003
    Assignee: Kabushiki Kaisha Audio-Technica
    Inventors: Hiroshi Akino, Bob Green, Shioto Okita, Kazuhisa Kondo, Shigeru Uzawa
  • Patent number: 6130952
    Abstract: 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: Grant
    Filed: October 15, 1997
    Date of Patent: October 10, 2000
    Assignee: Kabushiki Kaisha Audio-Technica
    Inventors: Hiroshi Akino, Bob Green, Shioto Okita, Kazuhisa Kondo, Shigeru Uzawa
  • Patent number: 5792755
    Abstract: 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: Grant
    Filed: January 18, 1995
    Date of Patent: August 11, 1998
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Alfons Sagenmuller, Hans-Herbert Schubert, Shigeru Uzawa, Kenichi Saito
  • Patent number: 5703132
    Abstract: 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: Grant
    Filed: November 21, 1996
    Date of Patent: December 30, 1997
    Assignee: Hoechst Schering AgrEvo GmbH
    Inventors: Alfons Sagenmuller, Hans-Herbert Schubert, Shigeru Uzawa, Kenichi Saito
  • Patent number: 5148492
    Abstract: 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: Grant
    Filed: March 14, 1991
    Date of Patent: September 15, 1992
    Assignee: Kabushiki Kaisha Audio-Technica
    Inventors: Shigeru Uzawa, Yoshio Kikuti
  • Patent number: 4710509
    Abstract: 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: Grant
    Filed: June 20, 1986
    Date of Patent: December 1, 1987
    Assignee: Nihon Tokushu Noyaku Seizo K. K.
    Inventors: Junichi Saito, Tatsuo Tamura, Yoshio Kurahashi, Shigeru Uzawa, Noboru Matsumoto, Naoko Yamaguchi