Patents by Inventor Kenichi Oshiumi
Kenichi Oshiumi 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: 11984272Abstract: A solid electrolytic capacitor that includes a resin molding including: a capacitor element laminate, the capacitor element laminate including a first layer and a second layer that are laminated together, the first layer includes a valve-action metal substrate exposed at a first end surface of the resin molding, the second layer includes an electrode lead-out layer exposed at a second end surface of the resin molding; an insulating substrate; and a sealing resin enclosing the capacitor element laminate; a first external electrode on a first end surface of the resin molding and connected to the valve-action metal substrate; a second external electrode on a second end surface of the resin molding and connected to the electrode lead-out layer; and a dummy layer not contributing to a capacity of the capacitor on a main surface of the capacitor element laminate in a lamination direction thereof and adjacent to the insulating substrate.Type: GrantFiled: June 6, 2022Date of Patent: May 14, 2024Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Junichi Kasuya, Kenichi Oshiumi, Koji Fujimoto, Kazutoyo Horio, Satoshi Tani, Katsutomo Aritomi
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Patent number: 11972907Abstract: A solid electrolytic capacitor that includes a resin molding, a first external electrode, and a second external electrode. The resin molding includes a laminate of multiple capacitor elements, and a sealing resin sealing the laminate. The following are satisfied: t1<t2, t3<t4, t1<t3, and t4/t3<t2/t1, where t1 is the thickness of an inner portion of the cathode lead-out layer, the inner portion not being exposed at the second end surface; t2 is the thickness of an exposed portion of the cathode lead-out layer, the exposed portion being exposed at the second end surface; t3 is the thickness of an inner portion of the valve-action metal substrate, the inner portion not being exposed at the first end surface; and t4 is the thickness of an exposed portion of the valve-action metal substrate, the exposed portion being exposed at the first end surface.Type: GrantFiled: June 15, 2022Date of Patent: April 30, 2024Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Satoshi Tani, Kenichi Oshiumi, Kazutoyo Horio, Junichi Sato, Keiji Yoshida
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Publication number: 20220310327Abstract: A solid electrolytic capacitor that includes a resin molding, a first external electrode, and a second external electrode. The resin molding includes a laminate of multiple capacitor elements, and a sealing resin sealing the laminate. The following are satisfied: t1<t2, t3<t4, t1<t3, and t4/t3<t2/t1, where t1 is the thickness of an inner portion of the cathode lead-out layer, the inner portion not being exposed at the second end surface; t2 is the thickness of an exposed portion of the cathode lead-out layer, the exposed portion being exposed at the second end surface; t3 is the thickness of an inner portion of the valve-action metal substrate, the inner portion not being exposed at the first end surface; and t4 is the thickness of an exposed portion of the valve-action metal substrate, the exposed portion being exposed at the first end surface.Type: ApplicationFiled: June 15, 2022Publication date: September 29, 2022Inventors: Satoshi TANI, Kenichi OSHIUMI, Kazutoyo HORIO, Junichi SATO, Keiji YOSHIDA
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Publication number: 20220301787Abstract: A solid electrolytic capacitor that includes a resin molding including: a capacitor element laminate, the capacitor element laminate including a first layer and a second layer that are laminated together, the first layer includes a valve-action metal substrate exposed at a first end surface of the resin molding, the second layer includes an electrode lead-out layer exposed at a second end surface of the resin molding; an insulating substrate; and a sealing resin enclosing the capacitor element laminate; a first external electrode on a first end surface of the resin molding and connected to the valve-action metal substrate; a second external electrode on a second end surface of the resin molding and connected to the electrode lead-out layer; and a dummy layer not contributing to a capacity of the capacitor on a main surface of the capacitor element laminate in a lamination direction thereof and adjacent to the insulating substrate.Type: ApplicationFiled: June 6, 2022Publication date: September 22, 2022Inventors: Junichi KASUYA, Kenichi OSHIUMI, Koji FUJIMOTO, Kazutoyo HORIO, Satoshi TANI, Katsutomo ARITOMI
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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
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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
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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
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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
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Patent number: 7715172Abstract: A multilayer capacitor includes a capacitor body in which internal electrodes in a first internal electrode group are overlapped with internal electrodes in a second internal electrode group with dielectric layers sandwiched therebetween. A first external electrode has a first wraparound portion and a second wraparound portion, and a second external electrode has a third wraparound portion and a fourth wraparound portion. The volume proportions of the effective layers in a first area sandwiched between the first wraparound portion and the second wraparound portion and in a third area sandwiched between the third wraparound portion and the fourth wraparound portion are set to at least about 10%. The volume proportions of the effective layers in a second area toward a lower surface in the first area and in a fourth area toward the lower surface in the third area are set to about 15% or less. The external dimensions of the multilayer capacitor 1 are about 1.6±0.1 mm in length by about 0.8±0.Type: GrantFiled: July 11, 2008Date of Patent: May 11, 2010Assignee: Murata Manufacturing Co., Ltd.Inventors: Kenichi Kawasaki, Noriyuki Inoue, Akira Saito, Makito Nakano, Kenichi Oshiumi
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Publication number: 20090002918Abstract: A multilayer capacitor includes a capacitor body in which internal electrodes in a first internal electrode group are overlapped with internal electrodes in a second internal electrode group with dielectric layers sandwiched therebetween. A first external electrode has a first wraparound portion and a second wraparound portion, and a second external electrode has a third wraparound portion and a fourth wraparound portion. The volume proportions of the effective layers in a first area sandwiched between the first wraparound portion and the second wraparound portion and in a third area sandwiched between the third wraparound portion and the fourth wraparound portion are set to at least about 10%. The volume proportions of the effective layers in a second area toward a lower surface in the first area and in a fourth area toward the lower surface in the third area are set to about 15% or less. The external dimensions of the multilayer capacitor 1 are about 1.6±0.1 mm in length by about 0.8±0.Type: ApplicationFiled: July 11, 2008Publication date: January 1, 2009Applicant: MURATA MANUFACTURING CO., LTD.Inventors: Kenichi KAWASAKI, Noriyuki INOUE, Akira SAITO, Makito NAKANO, Kenichi OSHIUMI
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Patent number: D997871Type: GrantFiled: June 17, 2020Date of Patent: September 5, 2023Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Yasuhiro Tamatani, Satoshi Tani, Kenichi Oshiumi, Junichi Sato, Kazutoyo Horio, Keiji Yoshida