Patents by Inventor Hiroki Kusayanagi
Hiroki Kusayanagi 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: 7859828Abstract: An electrolytic solution for use in an electrolytic capacitor including a capacitor element and a casing containing the capacitor element, the capacitor element including a pair of electrodes, and a conductive separator (E) which is formed with a conductive polymer layer (F) containing a dopant agent (H) on its surface and is interposed between the pair of electrodes, the conductive separator (E) and the pair of electrodes being rolled up in an overlapped state with each other, and spaces between the pair of electrodes being impregnated with the electrolytic solution, wherein an acid component (D) and a base component (C) as electrolytic components to be contained in the electrolytic solution are at such a molar ratio that the acid component (D) is excessive. By use of the electrolytic solution, increase in the ESR with the elapse of time in an electrolytic capacitor is suppressed.Type: GrantFiled: September 6, 2005Date of Patent: December 28, 2010Assignee: Panasonic CorporationInventors: Yukiyasu Sugihara, Keiko Hamada, Hiroyuki Matsuura, Shigetaka Furusawa, Hiroki Kusayanagi, Shinya Taguchi
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Publication number: 20080316679Abstract: It is provided the electrolytic solution for use in the electrolytic capacitor including a capacitor element and a casing containing said capacitor element, said capacitor element including a pair of electrodes, and a conductive separator (E) which is formed with a conductive polymer layer (F) containing a dopant agent (H) on its surface and is interposed between said pair of electrodes, said conductive separator (E) and said pair of electrodes being rolled up in an overlapped state with each other, and spaces between said pair of electrodes being impregnated with the electrolytic solution for electrolytic capacitor, wherein an acid component (D) and a base component (C) as electrolytic components to be contained in said electrolytic solution are at such a molar ratio that the acid component (D) is excessive. By use of said electrolytic solution for electrolytic capacitor, the increase in the ESR with the elapse of time in an electrolytic capacitor is suppressed.Type: ApplicationFiled: September 6, 2005Publication date: December 25, 2008Inventors: Yukiyasu Sugihara, Keiko Hamada, Hiroyuki Matsuura, Shigetaka Furusawa, Hiroki Kusayanagi, Shinya Taguchi
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Patent number: 7379289Abstract: The present invention provides a highly conductive separator of which surface is coated with conductive polymer molecules, and provides an electrolytic capacitor having a low ESR characteristic using the separator. The conductive separator is formed by sticking the conductive polymer molecules to an insulating separator substrate by chemical oxidative polymerization, and the stuck amount of the conductive polymer molecules per basis weight of the separator substrate is set in the range of 3 to 30 g/m2. Conductive polymer molecules that are hardly de-doped can be formed in the electrolyte for driving by chemical oxidative polymerization, so that an electrolytic capacitor having high capacitance and low ESR can be obtained.Type: GrantFiled: March 29, 2004Date of Patent: May 27, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yukihiro Nitta, Hiroyuki Matsuura, Hiroki Kusayanagi
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Publication number: 20060176647Abstract: The present invention provides a highly conductive separator of which surface is coated with conductive polymer molecules, and provides an electrolytic capacitor having a low ESR characteristic using the separator. The conductive separator is formed by sticking the conductive polymer molecules to an insulating separator substrate by chemical oxidative polymerization, and the stuck amount of the conductive polymer molecules per basis weight of the separator substrate is set in the range of 3 to 30 g/m2. Conductive polymer molecules that are hardly de-doped can be formed in the electrolyte for driving by chemical oxidative polymerization, so that an electrolytic capacitor having high capacitance and low ESR can be obtained.Type: ApplicationFiled: March 29, 2004Publication date: August 10, 2006Inventors: Yukihiro Nitta, Hiroyuki Matsuura, HIroki Kusayanagi
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Patent number: 6885547Abstract: A dielectric oxide film-having anode foil and a cathode foil put opposite to each other via a separator therebetween are coiled up to construct a capacitor device. In this, the separator is coated with an electroconductive polymer formed through chemical oxidation polymerization of a polymerizing monomer in a solution that contains at least a non-transition metal-based oxidizing agent and an organic acid compound. Even when the electrolytic capacitor with the capacitor device is driven in a high-humidity atmosphere and a large amount of water penetrates into it, the capacitor is free from a trouble of dedoping, and therefore keeps its high voltage-proofness and leak current stability. The electrolytic capacitor is resistant to heat and its ESR is low in a high-frequency region.Type: GrantFiled: March 30, 2004Date of Patent: April 26, 2005Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yukihiro Nitta, Hiroki Kusayanagi, Hiroyuki Matsuura
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Patent number: 6853540Abstract: A solid electrolytic capacitor including a valve metal positive electrode, an anodized layer formed on a surface of the positive electrode, a conductive polymer-containing negative electrode conductive layer, and a coupling agent layer and a surface active agent layer placed between the anodized layer and the negative electrode conductive layer.Type: GrantFiled: April 2, 2004Date of Patent: February 8, 2005Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasuo Kudoh, Kenji Akami, Hiroki Kusayanagi, Yasue Matsuya
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Publication number: 20040223270Abstract: To provide a low-ESR electrolytic capacitor having the advantages of high voltage-proofness and good stability in leak current.Type: ApplicationFiled: March 30, 2004Publication date: November 11, 2004Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Yukihiro Nitta, Hiroki Kusayanagi, Hiroyuki Matsuura
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Publication number: 20040184221Abstract: Conductive composition precursor prepared by dispersing or dissolving at least one additive having high dielectric layer repairing ability in conductive polymer solution, conductive composition made by removing a medium or solvent from this composition precursor, and a method of manufacturing a solid electrolytic capacitor using this conductive composition. The additive is at least one of “phosphoric acid or phosphoric acid ester compounds”, “phenol or phenol derivatives”, “nitrobenzene derivatives”, “alkyl naphthalene sulfonic acid anion”, “fluorocarbon surface active agent” and “fluorocarbon surface active agent and binder.” The surface of an anodized layer is treated with at least one of silane coupling agent, titanium coupling agent, borane coupling agent and aluminum coupling agent for providing an extremely thin insulating layer between the anodized layer and conductive polymer.Type: ApplicationFiled: April 2, 2004Publication date: September 23, 2004Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Yasuo Kudoh, Kenji Akami, Hiroki Kusayanagi, Yasue Matsuya
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Patent number: 6793690Abstract: Method of manufacturing a conductive composition precursor prepared by dispersing or dissolving at least one additive having high dielectric layer repairing ability in conductive polymer solution, the conductive composition made by removing a medium or solvent from this composition precursor. The additive is at least one of “phosphoric acid or phosphoric acid ester compounds”, “phenol or phenol derivatives”, “nitrobenzene derivatives”, “alkyl or naphthalene sulfonic acid anion”, “fluorocarbon surface active agent” and “fluorocarbon surface active agent and binder.Type: GrantFiled: January 7, 2003Date of Patent: September 21, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasuo Kudoh, Kenji Akami, Hiroki Kusayanagi, Yasue Matsuya
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Publication number: 20030147202Abstract: Method of manufacturing a conductive composition precursor prepared by dispersing or dissolving at least one additive having high dielectric layer repairing ability in conductive polymer solution, the conductive composition made by removing a medium or solvent from this composition precursor. The additive is at least one of “phosphoric acid or phosphoric acid ester compounds”, “phenol or phenol derivatives”, “nitrobenzene derivatives”, “alkyl naphthalene sulfonic acid anion”, “fluorocarbon surface active agent” and “fluorocarbon surface active agent and binder.Type: ApplicationFiled: January 7, 2003Publication date: August 7, 2003Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Yasuo Kudoh, Kenji Akami, Hiroki Kusayanagi, Yasue Matsuya
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Patent number: 6602741Abstract: Method of manufacturing a conductive composition precursor prepared by dispersing or dissolving at least one additive having high dielectric layer repairing ability in conductive polymer solution, the conductive composition made by removing a medium or solvent from this composition precursor. The additive is at least one of “phosphoric acid or phosphoric acid ester compounds”, “phenol or phenol derivatives”, “nitrobenzene derivatives”, “alkyl naphthalene sulfonic acid anion”, “fluorocarbon surface active agent” and “fluorocarbon surface active agent and binder.Type: GrantFiled: September 12, 2000Date of Patent: August 5, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasuo Kudoh, Kenji Akami, Hiroki Kusayanagi, Yasue Matsuya
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Patent number: 6375688Abstract: The invention includes the steps of preparing a mixed solution containing a polymerizable monomer, an oxidant, and a solvent; immersing a capacitor element in the mixed solution; and heating the capacitor element immediately over the boiling point of the solvent, after taking out the capacitor element from the mixed solution, in order to evaporate the solvent and form a conductive polymer layer on the capacitor element; the heating is carried out at a rate capable of generating a force able to tear open the conductive polymer. This method provides a capacitor having a high capacitance attainment ratio, an excellent dissipation factor, and a superior impedance characteristic.Type: GrantFiled: September 7, 1999Date of Patent: April 23, 2002Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kenji Akami, Yasuo Kudo, Yasue Matsuya, Hiroki Kusayanagi
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Patent number: 5389477Abstract: A photosensitive material for electrophotography comprises a conductive support and a photosensitive layer formed on the conductive support, the photosensitive layer being made of X-type metal-free phthalocyanine, a resin binder, and an essential additive effective for improving electrophotographic or photosensitive characteristics or durability in repeated use wherein the X-type metal-free phthalocyanine is dispersed in the resin binder partly in a molecular state and partly in a particulate state. The essential additive includes electrolytically polymerized products, certain kinds of dyes, silane or polysilane compounds, hole and electron transport substances, titanyl or vanadyl phthalocyanine, electron acceptors, perylene compounds, amine derivatives, amino compounds, zinc oxide or the like.Type: GrantFiled: September 10, 1992Date of Patent: February 14, 1995Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Sohji Tsuchiya, Atsushi Omote, Hiroki Kusayanagi, Yoshimasa Itoh, Takahiro Asano