Patents by Inventor Kazuo Tadanobu
Kazuo Tadanobu 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: 7359180Abstract: A solid electrolytic capacitor includes a flat-shaped anode terminal having a first surface connected to an anode portion of a capacitor element and having a second surface opposite to the first surface, a flat-shaped cathode terminal having a first surface connected to a cathode layer of the capacitor element and having a second surface opposite to the first surface thereof, and an insulating resin package accommodating the capacitor element, the anode terminal, and the cathode terminal. The second surface of the cathode terminal is flush with the second surface of the anode terminal. The second surface of the anode terminal and the second surface of the cathode terminal expose to an outside of the resin package. The anode terminal includes a first thick portion and a first thin portion thinner than the first thick portion. The first thick portion has the second surface of the anode terminal and a portion of the first surface of the anode terminal.Type: GrantFiled: April 11, 2005Date of Patent: April 15, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Junichi Kurita, Kazuo Tadanobu, Kenji Kuranuki, Yuji Midou, Tsuyoshi Yoshino, Tatsuo Fujii, Hiroshi Serikawa
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Patent number: 7342772Abstract: A solid electrolytic capacitor includes a plurality of laminated capacitor elements; an anode terminal connected to an anode portion where anode exposed portions of the capacitor elements are connected together; and a cathode terminal connected to a cathode portion where cathode layers of the capacitor elements are bonded together. Between lamination planes of the cathode layers of the capacitor elements, a conductive sheet is disposed. The capacitor elements are coated with a packaging resin layer in such a manner that a part of the anode terminal and a part of the cathode terminal are exposed.Type: GrantFiled: May 2, 2006Date of Patent: March 11, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazuo Tadanobu, Hideto Yamaguchi, Kazuyo Nishida
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Publication number: 20060262486Abstract: A solid electrolytic capacitor includes a plurality of laminated capacitor elements; an anode terminal connected to an anode portion where anode exposed portions of the capacitor elements are connected together; and a cathode terminal connected to a cathode portion where cathode layers of the capacitor elements are bonded together. Between lamination planes of the cathode layers of the capacitor elements, a conductive sheet is disposed. The capacitor elements are coated with a packaging resin layer in such a manner that a part of the anode terminal and a part of the cathode terminal are exposed.Type: ApplicationFiled: May 2, 2006Publication date: November 23, 2006Inventors: Kazuo Tadanobu, Hideto Yamaguchi, Kazuyo Nishida
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Patent number: 7123468Abstract: A solid electrolytic capacitor includes a valve metal on which surface a dielectric oxide film layer, a solid electrolyte layer, and a cathode layer are formed in this order. The cathode layer includes a silver layer which is formed of silver particles and at least one of phenolic novolak type epoxy resin represented by formula (1) and trishydroxyphenylmethane type epoxy resin represented by formula (2). Not less than 90 wt. % of the silver particles are occupied by flaky silver particles, which account for not less than 50 vol. % and not greater than 90 vol. %. This capacitor shows excellent characteristics in ESR and impedance.Type: GrantFiled: November 12, 2003Date of Patent: October 17, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Tomoko Kawashima, Yukifumi Takeda, Kazuo Tadanobu
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Publication number: 20060109604Abstract: A solid electrolytic capacitor includes a valve metal on which surface a dielectric oxide film layer, a solid electrolyte layer, and a cathode layer are formed in this order. The cathode layer includes a silver layer which is formed of silver particles and at least one of phenolic novolak type epoxy resin represented by formula (1) and trishydroxyphenylmethane type epoxy resin represented by formula (2). Not less than 90 wt. % of the silver particles are occupied by flaky silver particles, which account for not less than 50 vol. % and not greater than 90 vol. %. This capacitor shows excellent characteristics in ESR and impedance.Type: ApplicationFiled: November 12, 2003Publication date: May 25, 2006Inventors: Tomoko Kawashima, Yukifumi Takeda, Kazuo Tadanobu
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Patent number: 6992880Abstract: A solid electrolytic capacitor of the present invention has a structure where respective anode sections of capacitor elements are joined to an anode lead frame by resistance welding via a through hole formed in the anode lead frame. Current thus collects to the through hole during the welding to break a dielectric oxide film layer to expose aluminum foil, and the molten aluminum collects into the through hole. Stable welding work is therefore allowed without splashing the aluminum, and a solid electrolytic capacitor having high welding strength, high reliability, and reduced ESR can be obtained.Type: GrantFiled: August 19, 2003Date of Patent: January 31, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazuo Tadanobu, Yoshiro Maruhashi, Takuhisa Sugimoto, Yukihiro Take, Yoshiaki Yamamoto
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Publication number: 20040085712Abstract: A solid electrolytic capacitor of the present invention has a structure where respective anode sections of capacitor elements are joined to an anode lead frame by resistance welding via a through hole formed in the anode lead frame. Current thus collects to the through hole during the welding to break a dielectric oxide film layer to expose aluminum foil, and the molten aluminum collects into the through hole. Stable welding work is therefore allowed without splashing the aluminum, and a solid electrolytic capacitor having high welding strength, high reliability, and reduced ESR can be obtained.Type: ApplicationFiled: August 19, 2003Publication date: May 6, 2004Inventors: Kazuo Tadanobu, Yoshiro Maruhashi, Takuhisa Sugimoto, Yukihiro Take, Yoshiaki Yamamoto
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Patent number: 6719813Abstract: A solid electrolytic capacitor having (A) a capacitor element including an oxide layer 1 formed on a part of an outer surface of a valve metal anode body, a solid electrolyte layer 2 formed on the oxide layer layer, and a cathode conductor layer 3 formed on the solid electrolyte layer, and an anode lead out area on a remaining part of the anode body, (B) lead terminals connected to the cathode and the anode lead out area of the capacitor element, and (C) a packaging resin encapsulating the capacitor element with parts of the lead terminals exposed outside. The solid electrolytic capacitor has a first separation strip 6 and a second separation strip 7 formed on a part of the roughened surface layer and also has insulating material 8 on the respective surfaces of the first and the second separation strips.Type: GrantFiled: June 18, 2002Date of Patent: April 13, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Toshikuni Kojima, Kenji Kuranuki, Kazuo Tadanobu, Takuhisa Sugimoto, Yasuhiro Kobatake
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Patent number: 6680841Abstract: A disclosure is made on a solid electrolytic capacitor, which facilitates an assembly work with simple construction to lead to a reduction of cost, realizes excellent equivalent series resistance characteristics and makes a thin configuration possible, and a manufacturing method thereof. With the solid electrolytic capacitor of the present invention, a cathode lead frame has a connecting member to connect integrally with a cathode member of a capacitor element stack body on the side surface of a capacitor element extending in the thickness direction thereof. Capacitor elements, each provided with a through hole on an anode member, are stacked on top of each other in layers and connections between capacitor elements are achieved by disposing an anode lead frame between layers.Type: GrantFiled: July 30, 2002Date of Patent: January 20, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazuo Tadanobu, Takuhisa Sugimoto, Yukihiro Take, Itsuo Kojima, Kazuya Kawahara, Masatoshi Tasei, Masahiro Yabushita
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Publication number: 20030039093Abstract: A disclosure is made on a solid electrolytic capacitor, which facilitates an assembly work with simple construction to lead to a reduction of cost, realizes excellent equivalent series resistance characteristics and makes a thin configuration possible, and a manufacturing method thereof. With the solid electrolytic capacitor of the present invention, a cathode lead frame has a connecting member to connect integrally with a cathode member of a capacitor element stack body on the side surface of a capacitor element extending in the thickness direction thereof. Capacitor elements, each provided with a through hole on an anode member, are stacked on top of each other in layers and connections between capacitor elements are achieved by disposing an anode lead frame between layers.Type: ApplicationFiled: July 30, 2002Publication date: February 27, 2003Inventors: Kazuo Tadanobu, Takuhisa Sugimoto, Yukihiro Take, Itsuo Kojima, Kazuya Kawahara, Masatoshi Tasei, Masahiro Yabushita
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Publication number: 20030007311Abstract: A solid electrolytic capacitor comprising: (A) a capacitor element comprising: an oxide layer 1 formed on a part of an outer surface of a valve metal anode body, a solid electrolyte layer 2 formed on the oxide layer layer, and a cathode conductor layer 3 formed on the solid electrolyte layer, and an anode lead out area on a remaining part of the anode body, (B) lead terminals connected to the cathode and the anode lead out area of the capacitor element, and (C) a packaging resin encapsulating the capacitor element with parts of the lead terminals exposed outside. The solid electrolytic capacitor of the present invention has a first separation strip 6 and a second separation strip 7 formed on a part of the roughened surface layer and also has insulating material 8 on the respective surfaces of the first and the second separation strips.Type: ApplicationFiled: June 18, 2002Publication date: January 9, 2003Applicant: Matsushita Electric Industrial Co.Inventors: Toshikuni Kojima, Kenji Kuranuki, Kazuo Tadanobu, Takuhisa Sugimoto, Yasuhiro Kobatake
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Patent number: 6343005Abstract: A solid electrolytic capacitor of the present invention includes a positive electrode body, a dielectric layer disposed on the surface of the positive electrode body, a solid electrolyte layer disposed on the surface of the dielectric layer, a negative electrode layer disposed on the surface of the solid electrolyte layer, a positive electrode terminal electrically connected to the positive electrode body, and a negative electrode terminal electrically connected to the negative electrode layer, wherein the negative electrode layer includes a carbon layer and a conductor layer, and the carbon layer contains carbon particles and a benzene compound shown by the chemical formula 1. The whole is covered with facing resin while exposing the positive electrode terminal led out of the positive electrode body and the negative electrode terminal led out of the negative electrode layer. With this configuration, the carbon layer formed is fine and uniform.Type: GrantFiled: January 24, 2001Date of Patent: January 29, 2002Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazuo Tadanobu, Yasuhiro Kobatake, Takuhisa Sugimoto, Masato Ozawa, Tomoko Hosokawa
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Publication number: 20020008957Abstract: A solid electrolytic capacitor of the present invention comprises an positive electrode body, a dielectric layer disposed on the surface of the positive electrode body, a solid electrolyte layer disposed on the surface of the dielectric layer, a negative electrode layer disposed on the surface of the solid electrolyte layer, an positive electrode terminal electrically connected to the positive electrode body, and a negative electrode terminal electrically connected to the negative electrode layer, wherein the negative electrode layer includes a carbon layer and a conductor layer, and the carbon layer contains carbon particles and a benzene compound shown by the chemical formula 1. The whole is covered with facing resin while exposing the positive electrode terminal led out of the positive electrode body and the negative electrode terminal led out of the negative electrode layer. With this configuration, the carbon layer formed is fine and uniform.Type: ApplicationFiled: January 24, 2001Publication date: January 24, 2002Inventors: Kazuo Tadanobu, Yasuhiro Kobatake, Takuhisa Sugimoto, Masato Ozawa, Tomoko Hosokawa