Patents by Inventor Hiroyuki Demizu
Hiroyuki Demizu 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: 10903017Abstract: A solid electrolytic capacitor that includes a plurality of capacitor elements each including an anode portion, a dielectric layer, and a cathode portion having a solid electrolyte layer and a current collector layer; a leading conductor layer; an insulating resin body; a first external electrode; and a second external electrode. The plurality of capacitor elements are stacked in layers, with mutually adjacent capacitor elements having their respective current collector layers connected to each other. The current collector layer of only the capacitor element adjacent to the leading conductor layer is connected to the leading conductor layer. The first external electrode is connected to the leading conductor layer at the first end surface.Type: GrantFiled: June 14, 2017Date of Patent: January 26, 2021Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Hiroyuki Demizu, Kenichi Oshiumi, Tomohiro Suzuki, Shinya Yoshida, Tadahisa Sano, Koji Fujimoto, Tsuyoshi Yamamoto, Yoshinori Ueda, Shinji Otani
-
Patent number: 10418184Abstract: The solid electrolytic capacitor according to the present invention is a solid electrolytic capacitor including a valve metal, an oxide film layer formed on a surface of the valve metal, and a solid electrolyte layer formed on the oxide film layer, wherein the solid electrolyte layer contains a conductive polymer and a gel of an organic solvent solidified with a chemical gelling agent.Type: GrantFiled: March 30, 2016Date of Patent: September 17, 2019Assignee: Tokin CorporationInventors: Yasuhisa Sugawara, Yuji Murayama, Hiroyuki Demizu, Hiroki Satoh
-
Patent number: 10340092Abstract: A solid electrolytic capacitor that includes a capacitor element including an anode portion having a metal layer, a dielectric layer, and a cathode portion having a solid electrolyte layer and a current collector layer; a leading conductor layer; an insulating resin body covering the capacitor element and the leading conductor layer, the insulating resin body having a first end surface and a second end surface opposite to each other; a first external electrode; and a second external electrode. The first external electrode has at least one plating layer on the first end surface, and is connected to the leading conductor layer at the first end surface. The second external electrode has at least one plating layer on the second end surface, and is connected to the metal layer at the second end surface.Type: GrantFiled: June 14, 2017Date of Patent: July 2, 2019Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Hiroyuki Demizu, Kenichi Oshiumi, Tomohiro Suzuki, Shinya Yoshida, Koji Fujimoto, Tadahisa Sano, Tsuyoshi Yamamoto, Yoshinori Ueda, Shinji Otani
-
Publication number: 20170365415Abstract: A solid electrolytic capacitor that includes a capacitor element including an anode portion having a metal layer, a dielectric layer, and a cathode portion having a solid electrolyte layer and a current collector layer; a leading conductor layer; an insulating resin body covering the capacitor element and the leading conductor layer, the insulating resin body having a first end surface and a second end surface opposite to each other; a first external electrode; and a second external electrode. The first external electrode has at least one plating layer on the first end surface, and is connected to the leading conductor layer at the first end surface. The second external electrode has at least one plating layer on the second end surface, and is connected to the metal layer at the second end surface.Type: ApplicationFiled: June 14, 2017Publication date: December 21, 2017Inventors: HIROYUKI DEMIZU, Kenichi Oshiumi, Tomohiro Suzuki, Shinya Yoshida, Koji Fujimoto, Tadahisa Sano, Tsuyoshi Yamamoto, Yoshinori Ueda, Shinji Otani
-
Publication number: 20170365419Abstract: A solid electrolytic capacitor that includes a plurality of capacitor elements each including an anode portion, a dielectric layer, and a cathode portion having a solid electrolyte layer and a current collector layer; a leading conductor layer; an insulating resin body; a first external electrode; and a second external electrode. The plurality of capacitor elements are stacked in layers, with mutually adjacent capacitor elements having their respective current collector layers connected to each other. The current collector layer of only the capacitor element adjacent to the leading conductor layer is connected to the leading conductor layer. The first external electrode is connected to the leading conductor layer at the first end surface.Type: ApplicationFiled: June 14, 2017Publication date: December 21, 2017Inventors: Hiroyuki Demizu, Kenichi Oshiumi, Tomohiro Suzuki, Shinya Yoshida, Tadahisa Sano, Koji Fujimoto, Tsuyoshi Yamamoto, Yoshinori Ueda, Shinji Otani
-
Publication number: 20160293337Abstract: The solid electrolytic capacitor according to the present invention is a solid electrolytic capacitor including a valve metal, an oxide film layer formed on a surface of the valve metal, and a solid electrolyte layer formed on the oxide film layer, wherein the solid electrolyte layer contains a conductive polymer and a gel of an organic solvent solidified with a chemical gelling agent.Type: ApplicationFiled: March 30, 2016Publication date: October 6, 2016Inventors: Yasuhisa Sugawara, Yuji Murayama, Hiroyuki Demizu, Hiroki Satoh
-
Patent number: 9076590Abstract: The present invention provides an electroconductive polymer suspension solution and an electroconductive polymer material which has a high electroconductivity and in which the time-related deterioration of the electroconductivity is suppressed. Also, the present invention provides an electrolytic capacitor with a low ESR using the electroconductive polymer material as a solid electrolyte and a method for producing the same. In the present invention, electroconductive polymer particles 1 in the electroconductive polymer material are bonded via organic dispersant 2 and cross-linker 3 to obtain a strong bond between electroconductive polymer particles 1.Type: GrantFiled: February 22, 2013Date of Patent: July 7, 2015Assignee: NEC Tokin CorporationInventors: Yasuhisa Sugawara, Tomoki Nobuta, Satoshi Suzuki, Yasuhiro Tomioka, Hiroyuki Demizu, Hiroki Satoh
-
Publication number: 20140185192Abstract: Provided is a solid electrolytic capacitor having a low initial ESR in which the ESR increase with time can be suppressed. It is a solid electrolytic capacitor, including an electroconductive polymer layer, a graphite layer on the electroconductive polymer layer, and a silver layer on the graphite layer, wherein the electroconductive polymer layer and the graphite layer, and/or, the graphite layer and the silver layer are bonded by a chemical bond.Type: ApplicationFiled: December 17, 2013Publication date: July 3, 2014Applicant: NEC TOKIN CorporationInventors: Yasuhisa SUGAWARA, Koji Sakata, Yasuhiro Tomioka, Hiroyuki Demizu, Hiroki Satoh
-
Publication number: 20140168858Abstract: Provided is an electroconductive polymer solution containing an electroconductive polymer having high chemical resistance and a high electroconductivity. It is an electroconductive polymer solution, containing an electroconductive polymer having thiophene, aniline, pyrrole, or a derivative thereof as a repeating unit, wherein a dopant or a salt thereof having an amide bond and an anion group is doped into the electroconductive polymer.Type: ApplicationFiled: December 16, 2013Publication date: June 19, 2014Applicant: NEC TOKIN CorporationInventors: Hiroki SATOH, Yasuhisa Sugawara, Hiroyuki Demizu, Yasuhiro Tomioka, Koji Sakata
-
Patent number: 7980607Abstract: An impact absorbing member comprises a first main body and a second main body. The first main body comprises a first partial tube wall and first flange members. The second main body comprises a second partial tube wall and second flange members. The first flange members are joined with the respective second flange members in a discontinuous manner along the axial direction of the tube. In at least one segment where the first flange members and the second flange members are not joined in the axial direction of the tube, spaces are formed between ends part of a first partial tube wall side of the first flange members and end parts of a second partial tube wall side of the second flange members.Type: GrantFiled: July 23, 2008Date of Patent: July 19, 2011Assignees: Toyotomi Kiko Co., Ltd., Aisin Seiki Kabushiki KaishaInventors: Takakuni Kanaya, Hiroyuki Demizu, Kohei Hodoya
-
Publication number: 20110012389Abstract: An impact absorbing member comprises a first main body and a second main body. The first main body comprises a first partial tube wall and first flange members. The second main body comprises a second partial tube wall and second flange members. The first flange members are joined with the respective second flange members in a discontinuous manner along the axial direction of the tube. In at least one segment where the first flange members and the second flange members are not joined in the axial direction of the tube, spaces are formed between ends part of a first partial tube wall side of the first flange members and end parts of a second partial tube wall side of the second flange members.Type: ApplicationFiled: July 23, 2008Publication date: January 20, 2011Applicants: TOYOTOMI KIKO CO., LTD., AISIN SEIKI KABUSHIKI KAISHAInventors: Takakuni Kanaya, Hiroyuki Demizu, Kohei Hodoya