Patents by Inventor Katsuharu Yamada
Katsuharu Yamada 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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Publication number: 20120300371Abstract: An electrode foil includes a structure a structure in which metal particles and ceramic particles, which primarily include at least one of valve metal particles having a dielectric constant and ceramic particles, are deposited on a surface of a metal foil.Type: ApplicationFiled: May 31, 2012Publication date: November 29, 2012Applicant: FUJITSU LIMITEDInventors: Yoshihiko IMANAKA, Minoru Funahashi, Hidetoshi Ishizuka, Katsuharu Yamada
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Patent number: 8213159Abstract: An electrode foil includes a structure a structure in which metal particles and ceramic particles, which primarily include at least one of valve metal particles having a dielectric constant and ceramic particles, are deposited on a surface of a metal foil.Type: GrantFiled: October 16, 2009Date of Patent: July 3, 2012Assignee: Fujitsu LimitedInventors: Yoshihiko Imanaka, Minoru Funahashi, Hidetoshi Ishizuka, Katsuharu Yamada
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Patent number: 7948740Abstract: A method of manufacturing a solid electrolytic capacitor includes: rolling an anode foil, a cathode foil and a separator together, the separator being a mixed fiber composed of a chemical fiber and a natural fiber and being between the anode foil and the cathode foil; degrading and removing the natural fiber with enzyme; and forming an electrolytic layer composed of solid polymer between the anode foil and the cathode foil after degrading and removing the natural fiber.Type: GrantFiled: March 19, 2008Date of Patent: May 24, 2011Assignee: Nichicon CorporationInventors: Minoru Funahashi, Akira Ueda, Katsuharu Yamada
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Publication number: 20100165544Abstract: An electrode foil includes a structure a structure in which metal particles and ceramic particles, which primarily include at least one of valve metal particles having a dielectric constant and ceramic particles, are deposited on a surface of a metal foil.Type: ApplicationFiled: October 16, 2009Publication date: July 1, 2010Applicant: FUJITSU LIMITEDInventors: Yoshihiko Imanaka, Minoru Funahashi, Hidetoshi Ishizuka, Katsuharu Yamada
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Patent number: 7548410Abstract: A capacitor has a capacitor element, a packaging material, and a sealing material. The capacitor element has an anode foil coupled to an anode terminal, a cathode foil coupled to a cathode terminal, a separator, and an electrolyte layer. The anode foil, the cathode foil and the separator are rolled together. The separator is between the anode foil and the cathode foil. The electrolyte layer is formed between the anode foil and the cathode foil. The packaging material has an opening and packages the capacitor element. The sealing material has a through hole where the anode terminal and the cathode terminal pass through and seals the opening of the packaging material. A given space is provided between the sealing material and the capacitor element. A stopper for securing the space is provided on at least one of the anode terminal and the cathode terminal.Type: GrantFiled: January 11, 2007Date of Patent: June 16, 2009Assignee: Nichicon CorporationInventors: Akira Ueda, Ichirou Yamaji, Katsuharu Yamada, Minoru Funahashi, Junkichi Mabe, Ryoichi Kozaki
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Publication number: 20080232034Abstract: A method of manufacturing a solid electrolytic capacitor includes: rolling an anode foil, a cathode foil and a separator together, the separator being a mixed fiber composed of a chemical fiber and a natural fiber and being between the anode foil and the cathode foil; degrading and removing the natural fiber with enzyme; and forming an electrolytic layer composed of solid polymer between the anode foil and the cathode foil after degrading and removing the natural fiber.Type: ApplicationFiled: March 19, 2008Publication date: September 25, 2008Applicant: FUJITSU MEDIA DEVICES LIMITEDInventors: Minoru FUNAHASHI, Akira UEDA, Katsuharu YAMADA
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Patent number: 7417844Abstract: A stacked solid electrolytic capacitor has an anode foil composed of a valve metal, a cathode foil having carbon grains that are evaporated or physically adhered to a surface thereof, a separator and a solid electrolytic layer composed of a conducting polymer. The anode foil, the separator and the cathode foil are stacked in order. The solid electrolytic layer is formed between the anode foil and the cathode foil.Type: GrantFiled: July 6, 2006Date of Patent: August 26, 2008Assignee: Fujitsu Media Devices LimitedInventors: Hidetoshi Ishizuka, Toshiyuki Mizutani, Minoru Funahashi, Akira Ueda, Katsuharu Yamada, Kenya Sakurai
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Publication number: 20080043403Abstract: A capacitor has a capacitor element, a packaging material, and a sealing material. The capacitor element has an anode foil coupled to an anode terminal, a cathode foil coupled to a cathode terminal, a separator, and an electrolyte layer. The anode foil, the cathode foil and the separator are rolled together. The separator is between the anode foil and the cathode foil. The electrolyte layer is formed between the anode foil and the cathode foil. The packaging material has an opening and packages the capacitor element. The sealing material has a through hole where the anode terminal and the cathode terminal pass through and seals the opening of the packaging material. A given space is provided between the sealing material and the capacitor element. A stopper for securing the space is provided on at least one of the anode terminal and the cathode terminal.Type: ApplicationFiled: January 11, 2007Publication date: February 21, 2008Inventors: Akira Ueda, Ichirou Yamaji, Katsuharu Yamada, Minoru Funahashi, Junkichi Mabe, Ryoichi Kozaki
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Patent number: 7312979Abstract: A stacked solid electrolytic capacitor has a substrate, a capacitor element, and a metal cap. The substrate has electrical conductivity. The capacitor element is provided on the substrate. The metal cap is coupled to the substrate, covers the capacitor element and is electrically conducted to the substrate. A cathode of the capacitor element is electrically conducted to the substrate.Type: GrantFiled: January 22, 2007Date of Patent: December 25, 2007Assignee: Fujitsu Media Devices LimitedInventors: Hidetoshi Ishizuka, Minoru Funahashi, Toshiyuki Mizutani, Akira Ueda, Katsuharu Yamada
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Publication number: 20070171598Abstract: A stacked solid electrolytic capacitor has a substrate, a capacitor element, and a metal cap. The substrate has electrical conductivity. The capacitor element is provided on the substrate. The metal cap is coupled to the substrate, covers the capacitor element and is electrically conducted to the substrate. A cathode of the capacitor element is electrically conducted to the substrate.Type: ApplicationFiled: January 22, 2007Publication date: July 26, 2007Inventors: Hidetoshi Ishizuka, Minoru Funahashi, Toshiyuki Mizutani, Akira Ueda, Katsuharu Yamada
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Publication number: 20070022589Abstract: A stacked solid electrolytic capacitor has an anode foil composed of a valve metal, a cathode foil having carbon grains that are evaporated or physically adhered to a surface thereof, a separator and a solid electrolytic layer composed of a conducting polymer. The anode foil, the separator and the cathode foil are stacked in order. The solid electrolytic layer is formed between the anode foil and the cathode foil.Type: ApplicationFiled: July 6, 2006Publication date: February 1, 2007Inventors: Hidetoshi Ishizuka, Toshiyuki Mizutani, Minoru Funahashi, Akira Ueda, Katsuharu Yamada, Kenya Sakurai
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Publication number: 20060061940Abstract: A solid electrolytic capacity has an anode foil 2 having dielectric oxide layer 16 formed on surface thereof, a cathode foil 4 having whiskers 18 that are formed on surface thereof and hold carbide grains 17, a separator paper 6 and solid electrolytic layers 12 formed of a conducting polymer. The anode foil 2 and the cathode foil 4 were rolled together across the separator paper 6. The solid electrolytic layers 12 are formed between the anode foil 2 and the cathode foil 4. Thickness of a layer where the whiskers 18 hold the carbide grains 17 is 1 ?m to 5 ?m.Type: ApplicationFiled: September 22, 2005Publication date: March 23, 2006Inventors: Akira Ueda, Katsuharu Yamada, Minoru Funahashi
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Patent number: 7006348Abstract: A solid electrolytic capacity has an anode foil 2 having dielectric oxide layer 16 formed on surface thereof, a cathode foil 4 having whiskers 18 that are formed on surface thereof and hold carbide grains 17, a separator paper 6 and solid electrolytic layers 12 formed of a conducting polymer. The anode foil 2 and the cathode foil 4 were rolled together across the separator paper 6. The solid electrolytic layers 12 are formed between the anode foil 2 and the cathode foil 4. Thickness of a layer where the whiskers 18 hold the carbide grains 17 is 1 ?m to 5 ?m.Type: GrantFiled: September 22, 2005Date of Patent: February 28, 2006Assignee: Fujitsu Media Devices LimitedInventors: Akira Ueda, Katsuharu Yamada, Minoru Funahashi
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Publication number: 20040100756Abstract: An aluminum electrolytic capacitor has a capacitor element provided with an anode lead terminal and a cathode side lead terminal, a bottomed shield containing the capacitor element and a sealing rubber sealing an opening of the bottomed shield. The number of lead terminals of anode side and cathode side lead terminals, respective lead terminal being drawn out onto the same level of the bottomed shield, is selected from a number range of 2 to 4.Type: ApplicationFiled: November 10, 2003Publication date: May 27, 2004Applicant: FUJITSU MEDIA DEVICES LIMITEDInventors: Masayoshi Koizumi, Junkichi Mabe, Yutaka Ozawa, Katsuharu Yamada