Patents by Inventor Mutsumi Yano
Mutsumi Yano 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: 8213158Abstract: Provided is a solid electrolytic capacitor comprising an anode of a porous body formed of a valve metal or its alloy, a dielectric layer formed on the surface in the inside part of the porous body and on the surface in the outer peripheral part thereof, a conductive polymer layer formed on the dielectric layer, a cathode layer formed on the conductive polymer layer in the outer peripheral part of the porous body, and an anode lead of which one end is embedded inside the anode, wherein the conductive polymer layer in the first region which is in the inside part of the porous body and the periphery around the anode lead as the center is formed of a polypyrrole layer, and the conductive polymer layer in the second region which is the periphery around the first region is formed by laminating a polypyrrole layer on a polyethylenedioxythiophene layer.Type: GrantFiled: September 25, 2008Date of Patent: July 3, 2012Assignee: Sanyo Electric Co., Ltd.Inventors: Kazuhiro Takatani, Mutsumi Yano, Takashi Umemoto, Hiroshi Nonoue
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Patent number: 8206467Abstract: A method includes the following steps: forming a porous anode body using powder of valve metal or an alloy thereof; forming a dielectric layer on the surface of the anode body; soaking the anode body having the dielectric layer in a liquid containing a conductive-polymer monomer, thereby making the monomer adhere to the dielectric layer of the anode body; forming a first conductive polymer layer by soaking the anode body having the monomer adhered thereto in an oxidizing agent solution, thereby polymerizing the monomer by liquid-phase chemical polymerization; forming a second conductive polymer layer by bringing the conductive-polymer monomer into contact with the surface of the anode body having the first conductive polymer layer in a gas phase, thereby polymerizing the monomer by gas-phase chemical polymerization; and forming a third conductive polymer layer by soaking the anode body having the second conductive polymer layer in a liquid containing a monomer of a conductive polymer layer, thereby polymeriziType: GrantFiled: March 22, 2011Date of Patent: June 26, 2012Assignee: Sanyo Electric Co., Ltd.Inventors: Hiroki Hayashi, Mutsumi Yano, Yasumi Kobayashi, Kazuhiro Takatani, Kazuhito Kikuchi
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Patent number: 8098484Abstract: Solid electrolytic capacitors are provided with decreased equivalent series resistance (ESR). The solid electrolytic capacitors include: an anode containing a valve metal or an alloy that is mainly made of a valve metal; a dielectric layer formed on a surface of the anode; an electrolyte layer formed on the dielectric layer; a carbon layer formed on the electrolyte layer; and a silver paste layer formed on the carbon layer, wherein the silver paste layer contains a nonionic surfactant.Type: GrantFiled: December 18, 2008Date of Patent: January 17, 2012Assignee: Sanyo Electric Co., Ltd.Inventors: Kazuhito Kikuchi, Mutsumi Yano, Takashi Umemoto, Hiroshi Nonoue
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Publication number: 20110232056Abstract: A method includes the following steps: forming a porous anode body using powder of valve metal or an alloy thereof; forming a dielectric layer on the surface of the anode body; soaking the anode body having the dielectric layer in a liquid containing a conductive-polymer monomer, thereby making the monomer adhere to the dielectric layer of the anode body; forming a first conductive polymer layer by soaking the anode body having the monomer adhered thereto in an oxidizing agent solution, thereby polymerizing the monomer by liquid-phase chemical polymerization; forming a second conductive polymer layer by bringing the conductive-polymer monomer into contact with the surface of the anode body having the first conductive polymer layer in a gas phase, thereby polymerizing the monomer by gas-phase chemical polymerization; and forming a third conductive polymer layer by soaking the anode body having the second conductive polymer layer in a liquid containing a monomer of a conductive polymer layer, thereby polymeriziType: ApplicationFiled: March 22, 2011Publication date: September 29, 2011Applicant: SANYO ELECTRIC CO., LTD.Inventors: Hiroki HAYASHI, Mutsumi YANO, Yasumi KOBAYASHI, Kazuhiro TAKATANI, Kazuhito KIKUCHI
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Patent number: 8027151Abstract: An aspect of the invention provides a solid electrolytic capacitor that comprises: an anode formed of a valve metal or an alloy mainly made of a valve metal; a dielectric layer formed on a surface of the anode; a first conducting polymer layer formed on the dielectric layer, the first conducting polymer layer containing a non-ionic surfactant; a second conducting polymer layer formed on the first conducting polymer layer; and a cathode layer formed on the second conducting polymer layer.Type: GrantFiled: November 18, 2008Date of Patent: September 27, 2011Assignee: Sanyo Electric Co., Ltd.Inventors: Kazuhito Kikuchi, Kazuhiro Takatani, Mutsumi Yano, Takashi Umemoto, Hiroshi Nonoue
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Patent number: 7800887Abstract: A solid electrolytic capacitor, having a small equivalent series resistance, is formed by burying a capacitor element inside an epoxy resin outer package. The capacitor element includes an anode, having part of an anode lead buried therein, a dielectric layer formed on the anode and containing a niobium oxide, and a cathode formed on the dielectric layer. The cathode includes a first electrolyte layer containing a conductive polymer and formed on the dielectric layer, an intermediate layer containing an organic silane and formed on the first electrolyte layer, a second electrolyte layer containing a conductive polymer and formed on the intermediate layer, a first conductive layer containing carbon particles and formed on the second electrolyte layer, and a second conductive layer containing silver particles and formed on the first conductive layer.Type: GrantFiled: August 28, 2007Date of Patent: September 21, 2010Assignee: Sanyo Electric Co., Ltd.Inventors: Takahisa Iida, Mutsumi Yano, Takashi Umemoto, Hiroshi Nonoue
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Patent number: 7760490Abstract: A solid electrolytic capacitor includes an anode substrate, a dielectric layer provided on the anode substrate, a first cathode layer provided on the dielectric layer, and a second cathode layer provided on the first cathode layer. The first cathode layer is a layer made of polyethylenedioxythiophene and polypyrrole. The second layer is a layer made of polypyrrole.Type: GrantFiled: December 4, 2007Date of Patent: July 20, 2010Assignee: Sanyo Electric Co., Ltd.Inventors: Kazuhiro Takatani, Mutsumi Yano, Takashi Umemoto, Hiroshi Nonoue
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Patent number: 7742282Abstract: In this solid electrolytic capacitor, a plate-shaped anode having a porous sintered body, a dielectric layer and an electrolyte layer of polypyrrole are formed in this order for covering one part of an anode lead. An intermediate layer of aminopropyltriethoxysilane (APTES) is formed for covering the electrolyte layer. A cathode having a first conductive layer containing graphite particles and a second conductive layer containing silver particles is formed for covering the intermediate layer. The cathode and a cathode terminal are connected by a conductive adhesive layer. The anode lead and the anode terminal are connected by welding. Further, a mold outer resin is formed to allow one end of the cathode terminal and one end of the anode terminal to project therefrom.Type: GrantFiled: January 23, 2006Date of Patent: June 22, 2010Assignee: Sanyo Electric Co., Ltd.Inventors: Takahisa Iida, Mutsumi Yano, Mamoru Kimoto
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Patent number: 7729103Abstract: The present invention relates to a solid electrolytic capacitor provided with a anode made of a metal or an alloy having valve action, a dielectric layer formed on the anode, and an electrolyte layer consisting of a conductive polymer layer formed so as to have contact with a portion of the region on the dielectric layer surface and a manganese dioxide layer formed so as to have contact with the other portion of the region on the dielectric layer surface.Type: GrantFiled: March 10, 2008Date of Patent: June 1, 2010Assignee: Sanyo Electric Co., Ltd.Inventors: Kikuko Kato, Mutsumi Yano, Kazuhiro Takatani, Koichi Nishimura, Takashi Umemoto, Hiroshi Nonoue
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Publication number: 20100053848Abstract: A niobium solid electrolytic capacitor comprises: an anode mainly made of niobium and containing nitrogen and at least one kind of alloying element whose hardness is higher than that of niobium; a dielectric layer provided on a surface of the anode and containing nitrogen; an electrolyte layer provided on the dielectric layer and formed of a conductive polymer; and a cathode layer provided on the electrolyte layer. The electrolyte layer has a three-layered structure formed of a first electrolyte layer, a second electrolyte layer, and a third electrolyte layer, which are arranged in this order between the dielectric layer to the cathode layer. The second electrolyte layer and the third electrolyte layer contain alkyl substituted aromatic sulfonate. Conductivities of the respective electrolyte layers increase in order of the first electrolyte layer, the second electrolyte layer, and the third electrolyte layer.Type: ApplicationFiled: August 27, 2009Publication date: March 4, 2010Applicant: SANYO ELECTRIC CO., LTDInventors: Kazuhito Kikuchi, Mutsumi Yano, Kazuhiro Takatani, Hiroshi Nonoue
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Patent number: 7593216Abstract: A solid electrolytic capacitor includes a capacitor element having a niobium oxide layer arranged between an anode and a cathode, and an outer package covering the capacitor element. The niobium oxide layer contains fluorine and phosphorus, and the outer package contains epoxy resin, phenol resin, filler and an imidazole compound.Type: GrantFiled: May 29, 2007Date of Patent: September 22, 2009Assignee: Sanyo Electric Co., Ltd.Inventors: Kazuhiro Takatani, Mutsumi Yano, Hiroaki Izu, Takahisa Iida, Takashi Umemoto, Hiroshi Nonoue
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Publication number: 20090190287Abstract: A solid electrolytic capacitor in which the withstand voltage can be enhanced and a manufacturing method thereof are provided. A mixed powder is prepared by mixing a first powder containing at least one selected from the group consisting of a valve metal, an alloy of a valve metal, a metal oxide of a valve metal, and a metal nitride of a valve metal and a second powder containing a metal oxide different from the first powder. An anode is made by sintering the mixed powder. A dielectric layer is formed on a surface of the anode, and a cathode is formed on the dielectric layer.Type: ApplicationFiled: January 26, 2009Publication date: July 30, 2009Applicant: SANYO ELECTRIC CO., LTD.Inventors: Kazuhiro TAKATANI, Kazuhito Kikuchi, Mutsumi Yano, Takashi Umemoto, Hiroshi Nonoue
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Patent number: 7561409Abstract: A solid electrolytic capacitor element includes a first oxide layer formed on an anode. The solid electrolytic capacitor further includes a second oxide layer formed on the first oxide layer, and a cathode formed on the second oxide layer. The first oxide layer includes Nb2O5 and the second oxide layer includes NbOx (1?x ?2).Type: GrantFiled: August 28, 2006Date of Patent: July 14, 2009Assignee: Sanyo Electric Co., Ltd.Inventors: Takahisa Iida, Mutsumi Yano, Takashi Umemoto, Hiroshi Nonoue
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Publication number: 20090161297Abstract: Solid electrolytic capacitors are provided with decreased equivalent series resistance (ESR). The solid electrolytic capacitors include: an anode containing a valve metal or an alloy that is mainly made of a valve metal; a dielectric layer formed on a surface of the anode; an electrolyte layer formed on the dielectric layer; a carbon layer formed on the electrolyte layer; and a silver paste layer formed on the carbon layer, wherein the silver paste layer contains a nonionic surfactant.Type: ApplicationFiled: December 18, 2008Publication date: June 25, 2009Applicant: SANYO ELECTRIC CO., LTD.Inventors: Kazuhito KIKUCHI, Mutsumi Yano, Takashi Umemoto, Hiroshi Nonoue
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Publication number: 20090128997Abstract: An aspect of the invention provides a solid electrolytic capacitor that comprises: an anode formed of a valve metal or an alloy mainly made of a valve metal; a dielectric layer formed on a surface of the anode; a first conducting polymer layer formed on the dielectric layer, the first conducting polymer layer containing a non-ionic surfactant; a second conducting polymer layer formed on the first conducting polymer layer; and a cathode layer formed on the second conducting polymer layer.Type: ApplicationFiled: November 18, 2008Publication date: May 21, 2009Applicant: SANYO ELECTRIC CO., LTD.Inventors: Kazuhito Kikuchi, Kazuhiro Takatani, Mutsumi Yano, Takashi Umemoto, Hiroshi Nonoue
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Publication number: 20090086413Abstract: Provided is a solid electrolytic capacitor comprising an anode of a porous body formed of a valve metal or its alloy, a dielectric layer formed on the surface in the inside part of the porous body and on the surface in the outer peripheral part thereof, a conductive polymer layer formed on the dielectric layer, a cathode layer formed on the conductive polymer layer in the outer peripheral part of the porous body, and an anode lead of which one end is embedded inside the anode, wherein the conductive polymer layer in the first region which is in the inside part of the porous body and the periphery around the anode lead as the center is formed of a polypyrrole layer, and the conductive polymer layer in the second region which is the periphery around the first region is formed by laminating a polypyrrole layer on a polyethylenedioxythiophene layer.Type: ApplicationFiled: September 25, 2008Publication date: April 2, 2009Applicant: SANYO ELECTRIC CO., LTD.Inventors: Kazuhiro TAKATANI, Mutsumi Yano, Takashi Umemoto, Hiroshi Nonoue
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Patent number: 7489498Abstract: A capacitor element comprises an anode, a dielectric layer formed on the anode, an electrolyte layer formed on the dielectric layer, and a cathode formed on the electrolyte layer. On the cathode formed by the surface of the capacitor element, a conductive adhesive layer containing silver particles and an organic silane layer made from aminopropyltriethoxysilane (APTES) are sequentially formed, and the cathode and a cathode terminal are connected through the conductive adhesive layer and the organic silane layer. In addition, an anode terminal is connected to an anode lead which exposed from the anode by welding.Type: GrantFiled: August 29, 2006Date of Patent: February 10, 2009Assignee: Sanyo Electric Co., Ltd.Inventors: Hiroaki Izu, Takahisa Iida, Mutsumi Yano, Mamoru Kimoto
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Publication number: 20090015989Abstract: The invention provides a solid electrolytic capacitor which can suppress increase of a leakage current due to a heat load, and a method for producing the solid electrolytic capacitor. The solid electrolytic capacitor includes an anode body, a dielectric layer formed on a surface of the anode body, a conductive polymer layer formed on the dielectric layer, and a cathode layer formed on the conductive polymer layer. The dielectric layer contains at least one metal element which is selected from the group consisting of tungsten (W), molybdenum (Mo), vanadium (V) and chromium (Cr) and which has a concentration distribution in a direction of the thickness of the dielectric layer (i.e. in a direction from the cathode side to the anode side of the dielectric layer) so that the concentration of the metal element is maximized at an interface between the dielectric layer and the conductive polymer layer.Type: ApplicationFiled: July 9, 2008Publication date: January 15, 2009Applicant: SANYO ELECTRIC CO., LTDInventors: Kazuhiro Takatani, Mutsumi Yano, Takashi Umemoto, Hiroshi Nonoue
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Publication number: 20080316680Abstract: The present invention is to provide a solid electrolytic capacitor having a small equivalent series resistance. In this solid electrolytic capacitor, a capacitor element is buried inside of an outer package of an epoxy resin or the like, the capacitor element including an anode in which a part of an anode lead is buried, a dielectric layer which is formed on the anode and contains a niobium oxide and a cathode which is formed on the dielectric layer. The cathode includes a first electrolyte layer which is formed on the dielectric layer and contains a conductive polymer, an intermediate layer which is formed on the first electrolyte layer and contains organic silane, a second electrolyte layer which is formed on the intermediate layer and contains a conductive polymer, a first conductive layer which is formed on the second electrolyte layer and contains carbon particles and a second conductive layer which is formed on the first conductive layer and contains silver particles.Type: ApplicationFiled: August 28, 2007Publication date: December 25, 2008Applicant: Sanyo Electric Co., Ltd.Inventors: Takahisa Iida, Mutsumi Yano, Takashi Umemoto, Hiroshi Nonoue
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Publication number: 20080259529Abstract: A solid electrolytic capacitor includes an anode substrate, a dielectric layer provided on the anode substrate, a first cathode layer provided on the dielectric layer, and a second cathode layer provided on the first cathode layer. The first cathode layer is a layer made of polyethylenedioxythiophene and polypyrrole. The second layer is a layer made of polypyrrole.Type: ApplicationFiled: December 4, 2007Publication date: October 23, 2008Applicant: SANYO ELECTRIC CO., LTD.Inventors: Kazuhiro Takatani, Mutsumi Yano, Takashi Umemoto, Hiroshi Nonoue