Patents by Inventor Naoaki Fujii
Naoaki Fujii 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: 20240087787Abstract: Disclosed herein is a coil component that includes a coil part embedded in a magnetic element body. The coil part has a structure in which plural interlayer insulating films and plural conductor layers having a coil pattern are alternately stacked. At least one of the conductor layers has a clearance area having no coil pattern and extending radially outward from a center axis of the coil part. The magnetic element body includes a first magnetic resin layer provided in an inner diameter area of the coil part, a second magnetic resin layer provided in a radially outside area of the coil part, and a fifth magnetic resin layer filled in the clearance area and contacting the first and second magnetic resin layers.Type: ApplicationFiled: September 8, 2023Publication date: March 14, 2024Inventors: Yuki HASHIMOTO, Toshiyuki ABE, Takeshi OKUMURA, Tomonaga NISHIKAWA, Naoaki FUJII, Kazuhiro YOSHIKAWA
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Patent number: 11884653Abstract: Ebola virus and Marburg virus are filoviruses and are responsible for outbreaks that cause up to 90% fatality, including the recent outbreak in West Africa that has resulted in over 11,000 deaths. The present disclosure generally relates to series novel arylnaphthalene compounds, having a formula (I) or a pharmaceutically acceptable salt thereof, as a vacuolar-ATPase inhibitor that are useful for the treatment for a broad spectrum of viral infections, including those infections caused by filoviruses. Pharmaceutical composition matters and methods of use are within the scope of this invention.Type: GrantFiled: April 6, 2021Date of Patent: January 30, 2024Assignees: Purdue Research Foundation, Trustees of Boston UniversityInventors: Vincent Jo Davisson, Aaron Raymond Lindstrom, Naoaki Fujii, Robert A. Davey
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Publication number: 20230420176Abstract: Disclosed herein is a coil component that includes a magnetic element body, and a coil part embedded in the magnetic element body. The magnetic element body includes a first region covering the coil part from one side in a coil axis direction, a second region covering the coil part from other side in the coil axis direction, and a third region positioned in an inner diameter area of the coil part so as to connect the first and second regions. The height of the coil part in the coil axis direction decreases toward the inner diameter area.Type: ApplicationFiled: June 7, 2023Publication date: December 28, 2023Inventors: Yuuichi KAWAGUCHI, Naoaki FUJII, Tomonaga NISHIKAWA, Liyi CHEN, Mitsuo NATORI
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Publication number: 20230420184Abstract: Disclosed herein is a coil component that includes an element body having a mounting surface, a coil part embedded in the element body, and a first conductor post embedded in the element body. The first conductor post has a first end connected to the coil part and a second end exposed from the mounting surface. A surface of the element body on the mounting surface side has a recess from a surface of the first conductor post.Type: ApplicationFiled: June 7, 2023Publication date: December 28, 2023Inventors: Yuuichi KAWAGUCHI, Naoaki FUJII, Tomonaga NISHIKAWA, Liyi CHEN, Rui SAKUMA
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Publication number: 20230368969Abstract: To prevent a short-circuit failure by controlling the flow of a solder in a surface-mount type coil component. A coil component includes a coil part in which conductor layers and interlayer insulating layers are alternately stacked. The conductor layers respectively have coil conductor patterns embedded in the coil part and electrode patterns exposed from the coil part. The interlayer insulating layers each protrude from the plurality of electrode patterns at a part between the electrode patterns, and the flow of a solder in the stacking direction is suppressed by the protruding parts. This makes it possible to prevent a short-circuit failure due to the flow of a solder in the stacking direction.Type: ApplicationFiled: September 7, 2021Publication date: November 16, 2023Inventors: Yuuichi KAWAGUCHI, Naoaki FUJII, Tomonaga NISHIKAWA
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Publication number: 20230352234Abstract: A coil component includes: a magnetic element body made of resin containing conductive magnetic powder; a coil part 20 obtained by alternately stacking a plurality of conductor layers and a plurality of interlayer insulating layers, the plurality of conductor layers respectively including coil conductor patterns embedded in the magnetic element body and electrode patterns exposed from the magnetic element body; external terminals provided respectively on the electrode patterns and electrode patterns; and a protective insulating layer covering the magnetic element body in such a manner as to expose the external terminals therethrough. The magnetic element body is thus covered with the protective insulating layer, so that it is possible to prevent adhesion of plating to an unnecessary portion and exposure of the coil conductor patterns even when the surfaces of the external terminals are subjected to electrolytic plating.Type: ApplicationFiled: September 7, 2021Publication date: November 2, 2023Inventors: Yuuichi KAWAGUCHI, Mitsuo NATORI, Azuma SATOH, Naoaki FUJII, Tomonaga NISHIKAWA
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Publication number: 20230352233Abstract: A coil component includes a coil part having a structure in which interlayer insulating films 51 to 55 and coil patterns CP1 to CP4 are alternately stacked in the coil axis direction and magnetic element bodies M1 to M4 embedding therein the coil part. A radial width of a part of the interlayer insulating film that is positioned between the magnetic element body M1 positioned in the inner diameter area of the coil part and the innermost turn of the coil pattern CP4 is larger than radial widths L11, L21, and L31 of parts of the interlayer insulating films 52 to 54 that are positioned between the magnetic element body M1 and the innermost turns of the coil patterns CP1 to CP3.Type: ApplicationFiled: September 7, 2021Publication date: November 2, 2023Inventors: Masanori SUZUKI, Nobuya TAKAHASHI, Akira MOTOHASHI, Naoaki FUJII, Masaki YONEYAMA, Tomonaga NISHIKAWA
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Publication number: 20230126614Abstract: Disclosed herein is a coil component that includes a coil part having a structure in which a plurality of conductor layers each having a coil pattern are stacked in a coil axis direction through a plurality of interlayer insulating films, a first magnetic layer covering the coil part in the coil axis direction, and a second magnetic layer positioned in an inner diameter area of the coil part. The plurality of interlayer insulating films include a first interlayer insulating film positioned closest to the first magnetic layer. The first and second magnetic layers contact each other through an opening formed in the first interlayer insulating film. The opening has a shape whose diameter increases as a distance from an interface between the first and second magnetic layers increases.Type: ApplicationFiled: October 21, 2022Publication date: April 27, 2023Inventors: Masanori SUZUKI, Takuya TAKEUCHI, Tomonaga NISHIKAWA, Nobuya TAKAHASHI, Naoaki FUJII
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Publication number: 20220375679Abstract: To improve magnetic characteristics of a coil component having a structure in which an interlayer insulating film is provided between a spiral coil pattern and a magnetic element body. A coil component 1 includes: an interlayer insulating film 41 covering coil patterns CP1 to CP3 from one side in the axial direction of the coil patterns; a magnetic element body M1 filled in the inner diameter areas of the coil patterns CP1 to CP3; and a magnetic element body M2 covering the coil patterns CP1 to CP3 from the one side in the axial direction through the interlayer insulating film 41. The interlayer insulating film 41 has a protruding part 41A radially protruding to the inner diameter area, and the protruding part 41A is curved to the other side in the axial direction. Since the protruding part 41A is curved in the axial direction, the entrance of a magnetic path passing through the inner diameter area is made wider than when the protruding part 41A linearly protrudes to the inner diameter area.Type: ApplicationFiled: September 29, 2020Publication date: November 24, 2022Inventors: Takuya TAKEUCHI, Naoaki FUJII, Nobuya TAKAHASHI
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Publication number: 20220375681Abstract: A coil component has a magnetic element body made of resin containing magnetic particles, a coil part embedded in the magnetic element body, conductor posts which are embedded in the magnetic element body and whose one ends are connected to the coil part and the other ends are exposed from the magnetic element body, an insulating layer interposed between the conductor posts and the magnetic element body, and other insulating layers interposed between the coil part and the magnetic element body. Since the insulating layer is interposed between the conductor posts and the magnetic element body, it is possible to ensure insulation performance between the conductor posts and the magnetic element body and to prevent the occurrence of peeling therebetween.Type: ApplicationFiled: September 24, 2020Publication date: November 24, 2022Inventors: Takuya TAKEUCHI, Yuuichi KAWAGUCHI, Masanori SUZUKI, Naoaki FUJII
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Patent number: 11488772Abstract: Provided is a coil component that includes a coil part having a planar coil that includes a winding section and an insulating section covering the winding section, and a magnetic resin layer including a magnetic filler and configured to cover the coil part. The magnetic resin layer has a first magnetic resin layer that is in contact with the coil part and a second magnetic resin layer that is laminated on the first magnetic resin layer. The second magnetic resin layer constitutes a principal surface of the magnetic resin layer, and a maximum particle size of the magnetic filler contained in the second magnetic resin layer is larger than that of the magnetic filler contained in the first magnetic resin layer.Type: GrantFiled: September 10, 2018Date of Patent: November 1, 2022Assignee: TDK CORPORATIONInventors: Yuuichi Kawaguchi, Masanori Suzuki, Naoaki Fujii
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Patent number: 11482357Abstract: Disclosed herein is a coil component that includes: a magnetic element body containing magnetic powder, the magnetic element body having first and second surfaces; a coil conductor embedded in the magnetic element body; and an external terminal connected to the coil conductor and exposed on the first surface of the magnetic element body. The second surface of the magnetic element body is free from the external terminal. The first surface is greater in surface roughness than the second surface.Type: GrantFiled: April 24, 2019Date of Patent: October 25, 2022Assignee: TDK CORPORATIONInventors: Yuuichi Kawaguchi, Masanori Suzuki, Naoaki Fujii, Tomonaga Nishikawa
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Patent number: 11476041Abstract: A coil component is provided with a coil part in which a plurality of conductor layers and a plurality of interlayer insulating layers are alternately laminated; and a sealing resin layer that covers the coil part. The conductor layers each include a spiral pattern. The interlayer insulating layers each cover an upper surface and a side surface of the spiral pattern. The recessed part is formed in the side wall surface of the interlayer insulating layer. A part of the sealing resin layer is embedded in the recessed part.Type: GrantFiled: February 1, 2019Date of Patent: October 18, 2022Assignee: TDK CORPORATIONInventors: Masanori Suzuki, Manabu Yamatani, Takuya Takeuchi, Ikuya Kokubo, Tomonaga Nishikawa, Naoaki Fujii, Nobuya Takahashi
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Patent number: 11450475Abstract: A coil component includes: a first magnetic resin layer in a lower area; a second magnetic resin layer in an inner diameter area surrounded by a coil pattern, an outer peripheral area that surrounds the coil pattern, and an upper area; and an insulating gap layer between the first and second magnetic resin layers. A part of the insulating gap layer positioned between the first magnetic resin layer and a part of the second magnetic resin layer positioned in the inner diameter area is curved in the axial direction. A magnetic substrate need not be used. The insulating gap layer is provided, allowing the insulating gap layer to function as a magnetic gap. The insulating gap layer is curved in the axial direction, so that a contact area between the insulating gap layer and the first and second magnetic resin layers are increased to enhance adhesion therebetween.Type: GrantFiled: August 10, 2018Date of Patent: September 20, 2022Assignee: TDK CORPORATIONInventors: Masanori Suzuki, Yuuichi Kawaguchi, Naoaki Fujii, Tomonaga Nishikawa
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Publication number: 20220286049Abstract: A first flying capacitor circuit and a second flying capacitor circuit are connected in series so as to be in parallel to a high voltage side DC part. A reactor is connected to a positive side terminal of a low voltage side DC part and a midpoint of the first flying capacitor circuit. A midpoint of the second flying capacitor circuit is connected to a negative side terminal of the low voltage side DC part. A node between the first flying capacitor circuit and the second flying capacitor circuit is connected to an intermediate potential node of the high voltage side DC part.Type: ApplicationFiled: June 22, 2020Publication date: September 8, 2022Inventor: Naoaki FUJII
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Publication number: 20210230149Abstract: Ebola virus and Marburg virus are filoviruses and are responsible for outbreaks that cause up to 90% fatality, including the recent outbreak in West Africa that has resulted in over 11,000 deaths. The present disclosure generally relates to series novel arylnaphthalene compounds, having a formula (I) or a pharmaceutically acceptable salt thereof, as a vacuolar-ATPase inhibitor that are useful for the treatment for a broad spectrum of viral infections, including those infections caused by filoviruses. Pharmaceutical composition matters and methods of use are within the scope of this invention.Type: ApplicationFiled: April 6, 2021Publication date: July 29, 2021Applicant: Purdue Research FoundationInventors: Vincent Jo Davisson, Aaron Raymond Lindstrom, Naoaki Fujii, Robert A. Davey
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Publication number: 20210233698Abstract: A coil component includes spiral conductor patterns S1 and S2 and insulating resin layers that cover the spiral conductor patterns S1 and S2, respectively. An outermost turn of the spiral conductor pattern S1 has a widened part. As a result, an outer wall surface part constituting the outer wall surface of the outermost turn in the radial direction and an outer wall surface part constituting the outer wall surface of the outermost turn of the spiral conductor pattern S2 in the radial direction differ in radial position from each other. Overlap of the insulating resin layers in the lamination direction is reduced to suppress thermal expansion or contraction of the insulating resin layers in the lamination direction at the overlap. This can relieve a stress applied to the interface between the spiral conductor pattern and the insulating resin layer.Type: ApplicationFiled: June 5, 2019Publication date: July 29, 2021Inventors: Nobuya TAKAHASHI, Naoaki FUJII, Tomonaga NISHIKAWA
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Patent number: 11056268Abstract: A coil component includes a plurality of conductor layers constituted of a first conductor layer to a fourth conductor layer that includes a function layer and a coil layer wound around an axis center; and a covering portion that is formed of an insulative resin, integrally covers the plurality of conductor layers, and is interposed between conductor layers adjacent to each other. The coil layer and the function layer of the plurality of conductor layers have substantially the same shape in a plan view. The fourth conductor layer has a connection conductor layer connecting the coil layer and the function layer to each other. A conductor layer having no connection conductor layer among the plurality of conductor layers has a protrusion portion corresponding to the connection conductor layer at a position overlapping the connection conductor layer in a plan view.Type: GrantFiled: July 26, 2018Date of Patent: July 6, 2021Assignee: TDK CORPORATIONInventors: Masanori Suzuki, Kouji Kawamura, Naoaki Fujii, Manabu Yamatani, Tomonaga Nishikawa
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Publication number: 20210005377Abstract: A coil component includes: a first magnetic resin layer in a lower area; a second magnetic resin layer in an inner diameter area surrounded by a coil pattern, an outer peripheral area that surrounds the coil pattern, and an upper area; and an insulating gap layer between the first and second magnetic resin layers. A part of the insulating gap layer positioned between the first magnetic resin layer and a part of the second magnetic resin layer positioned in the inner diameter area is curved in the axial direction. A magnetic substrate need not be used. The insulating gap layer is provided, allowing the insulating gap layer to function as a magnetic gap. The insulating gap layer is curved in the axial direction, so that a contact area between the insulating gap layer and the first and second magnetic resin layers are increased to enhance adhesion therebetween.Type: ApplicationFiled: August 10, 2018Publication date: January 7, 2021Inventors: Masanori SUZUKI, Yuuichi KAWAGUCHI, Naoaki FUJII, Tomonaga NISHIKAWA
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Patent number: 10840010Abstract: Disclosed herein is a coil component that includes a coil part in which a plurality of conductor layers and a plurality of interlayer insulting layers are alternately laminated, and an external terminal. Each of the conductor layers has a coil conductor pattern and an electrode pattern exposed from the coil part. The electrode patterns are connected to each other through a plurality of via conductors penetrating the interlayer insulating layers. At least one of the interlayer insulating layers is exposed from the coil part positioned between the plurality of electrode patterns. The external terminal is formed on the electrode patterns exposed from the coil part so as to avoid an exposed part of the interlayer insulating layer.Type: GrantFiled: April 24, 2018Date of Patent: November 17, 2020Assignee: TDK CORPORATIONInventors: Naoaki Fujii, Tomonaga Nishikawa, Kouji Kawamura, Nobuya Takahashi