Patents by Inventor Mutsuko Nakano
Mutsuko Nakano 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: 20240145146Abstract: A magnetostrictive film includes rich regions having a mesh pattern in a cross section perpendicular to a film thickness direction of the magnetostrictive film. The rich regions are richer in a specific element contributing to ferromagnetism than surroundings of the rich regions.Type: ApplicationFiled: October 31, 2023Publication date: May 2, 2024Applicant: TDK CORPORATIONInventors: Mutsuko NAKANO, Yasuhisa OKANO, Takao NOGUCHI, Wakako OKAWA, Yoshitomo TANAKA
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Patent number: 11786134Abstract: A fluid pressure detection device capable of accurately detecting a pressure change of a fluid flowing inside a tube includes a substrate, a piezoelectric element formed on the top surface of the substrate, a support body which is annular and surrounds the piezoelectric element and supports the top surface of the substrate, and a lid body which is provided to close the top opening of the support body, and deforms the tube with the bottom surface of the substrate by pressing the substrate through the support body.Type: GrantFiled: March 6, 2018Date of Patent: October 17, 2023Assignee: TDK CorporationInventors: Mutsuko Nakano, Ken Unno, Tomohiro Moriki
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Patent number: 11175196Abstract: A fluid pressure detection device capable of accurately detecting a pressure change of a fluid flowing inside a tube includes a substrate, and piezoelectric elements on the top surface of the substrate. The substrate is substantially rectangular in shape. The piezoelectric elements are arranged along the longitudinal direction of the substrate with long sides of each of the piezoelectric elements substantially perpendicular to the long side of the substrate. The substrate has slits on both sides of each of the piezoelectric elements in the longitudinal direction of the substrate. When detecting the pressure, the tube is deformed with a bottom surface of the substrate.Type: GrantFiled: March 6, 2018Date of Patent: November 16, 2021Assignee: TDK CorporationInventors: Mutsuko Nakano, Tomohiro Moriki
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Publication number: 20200340876Abstract: A fluid pressure detection device capable of accurately detecting a pressure change of a fluid flowing inside a tube includes a substrate, and piezoelectric elements on the top surface of the substrate. The substrate is substantially rectangular in shape. The piezoelectric elements are arranged along the longitudinal direction of the substrate with long sides of each of the piezoelectric elements substantially perpendicular to the long side of the substrate. The substrate has slits on both sides of each of the piezoelectric elements in the longitudinal direction of the substrate. When detecting the pressure, the tube is deformed with a bottom surface of the substrate.Type: ApplicationFiled: March 6, 2018Publication date: October 29, 2020Inventors: Mutsuko NAKANO, Tomohiro MORIKI
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Publication number: 20200037899Abstract: A fluid pressure detection device capable of accurately detecting a pressure change of a fluid flowing inside a tube includes a substrate, a piezoelectric element formed on the top surface of the substrate, a support body which is annular and surrounds the piezoelectric element and supports the top surface of the substrate, and a lid body which is provided to close the top opening of the support body, and deforms the tube with the bottom surface of the substrate by pressing the substrate through the support body.Type: ApplicationFiled: March 6, 2018Publication date: February 6, 2020Inventors: Mutsuko NAKANO, Ken UNNO, Tomohiro MORIKI
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Patent number: 7987590Abstract: An insulating sheet including resin is attached to a conductor portion composed of a wiring pattern and a columnar conductor from above. Then pressure and heat are applied to the insulating sheet using the columnar conductor as a stopper to form a layer of resin having a uniform thickness with the height of the columnar conductor being a reference to cover the conductor portion. In such method for manufacturing an electronic part, a projecting portion is formed outside a part formation area. In this substrate sheet, the amount of the resin required for forming the layer is computed based on the proportion of the volume taken up by the conductor portion in a domain including the projecting portion, and the thickness of the insulating sheet is set in accordance with the computed resin amount.Type: GrantFiled: February 26, 2004Date of Patent: August 2, 2011Assignee: TDK CorporationInventors: Masashi Gotoh, Kaoru Kawasaki, Hiroshi Yamamoto, Mutsuko Nakano, Hajime Kuwajima
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Patent number: 7813104Abstract: A ceramic element, including: a ceramic body having an internal electrode layer and a ceramic layer; an external electrode having a base electrode which is provided on the outside of the ceramic body so as to be electrically connected with the internal electrode layer, and a plating layer covering the outer surface of the base electrode; and a protective layer for covering at least a portion of the outer surface of the ceramic layer other than the portion covered by the external electrode, wherein the protective layer includes a first layer that is an insulating layer containing an insulating oxide, and a second layer that is an insulating layer containing the same insulating oxide as the first layer and an element that is the same as at least one of elements forming the ceramic layer, and the first layer and second layer are formed in that order from the inside.Type: GrantFiled: January 26, 2009Date of Patent: October 12, 2010Assignee: TDK CorporationInventors: Mutsuko Nakano, Kyoji Koseki, Hisashi Aiba, Yukihiro Murakami, Kazuto Takeya
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Publication number: 20100214046Abstract: The invention provides a bonded magnet having more excellent rust inhibiting performance than the prior art, and a process for its manufacture. The bonded magnet manufacturing process of the invention is a process for manufacture of a bonded magnet wherein a protective layer is formed on the surface of a bonded magnet body containing a rare earth element, the process comprising a step of contacting the bonded magnet body with a solution containing a phosphate and an acid ion to form a phosphorus-containing protective layer on the surface of the bonded magnet body.Type: ApplicationFiled: April 29, 2010Publication date: August 26, 2010Applicant: TDK CORPORATIONInventor: Mutsuko NAKANO
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Patent number: 7651940Abstract: A conductor portion is formed on the surface of a support member. After the conductor portion is formed, a copper foil on which resin is attached is moved downward from above the conductor portion to pressurize the conductor portion while covering it. the copper foil with the resin is pressed to the height of the conductor potion while using the conductor portion as a stopper. Thus, it is possible to make the height of the insulating layer equal to the height of the conductor portion.Type: GrantFiled: December 2, 2003Date of Patent: January 26, 2010Assignee: TDK CorporationInventors: Masashi Gotoh, Kaoru Kawasaki, Hiroshi Yamamoto, Mutsuko Nakano
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Patent number: 7649436Abstract: A preferred varistor body has a structure of alternately laminated internal electrode layer and varistor layer made of a varistor material. The varistor layer has a composition containing Zn, Co, Pr, Li, and Zr. The analysis of varistor body in the depth direction from the surface thereof gives the Li content of 0.08 parts by mass or less to 100 parts by mass of the sum of Zn, Co, and Pr contents at a level of 2 ?m at the surface side above the reference depth where the Zr content becomes almost constant.Type: GrantFiled: March 27, 2007Date of Patent: January 19, 2010Assignee: TDK CorporationInventor: Mutsuko Nakano
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Publication number: 20090191418Abstract: A ceramic element, including: a ceramic body having an internal electrode layer and a ceramic layer; an external electrode having a base electrode which is provided on the outside of the ceramic body so as to be electrically connected with the internal electrode layer, and a plating layer covering the outer surface of the base electrode; and a protective layer for covering at least a portion of the outer surface of the ceramic layer other than the portion covered by the external electrode, wherein the protective layer includes a first layer that is an insulating layer containing an insulating oxide, and a second layer that is an insulating layer containing the same insulating oxide as the first layer and an element that is the same as at least one of elements forming the ceramic layer, and the first layer and second layer are formed in that order from the inside.Type: ApplicationFiled: January 26, 2009Publication date: July 30, 2009Applicant: TDK CORPORATIONInventors: Mutsuko NAKANO, Kyoji KOSEKI, Hisashi AIBA, Yukihiro MURAKAMI, Kazuto TAKEYA
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Patent number: 7543375Abstract: A process for producing an electronic component The electronic component includes a base material equipped with a core material and having a conductor layer on at least one surface thereof; a via hole formed through laser irradiation from the other surface side of the base material; a first plating layer formed by using the conductor layer as an electrode so as to cover the core material, which is exposed on an inner wall surface of the via hole; an electroless plating layer which is formed on the upper side of the first plating layer and which is in close contact with the inner wall surface of the via hole; and a second plating layer formed by using the conductor layer as an electrode so as to cover the electroless plating layer. A conductor part is formed in the via hole.Type: GrantFiled: March 18, 2004Date of Patent: June 9, 2009Assignee: TDK CorporationInventors: Masashi Gotoh, Kaoru Kawasaki, Hiroshi Yamamoto, Mutsuko Nakano
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Patent number: 7372357Abstract: A preferred varistor body 2 has a structure of alternately laminated internal electrode layer 12 and varistor layer 14. The varistor layer 14 has a composition containing ZnO as the main component, and Co, Pr, and Zr as the auxiliary components. An analysis of the varistor body 2 in the depth direction from the surface thereof satisfies the formula (1) and (2): 0.4×Z1/Z0+0.5?P1/P0?0.4×Z1/Z0+0.9??(1) 1<Z1/Z0<2.2??(2) where, Z0 is the Zr content at a reference depth where the Zr content becomes almost constant, Z1 is the Zr content at a level of 2 ?m at the surface side above the reference depth, P0 is the Pr content at the reference depth, and P1 is the Pr content at a level of 2 ?m at the surface side above the reference depth.Type: GrantFiled: March 27, 2007Date of Patent: May 13, 2008Assignee: TDK CorporationInventor: Mutsuko Nakano
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Publication number: 20080050581Abstract: The object of the present invention is to provide a rare-earth magnet having a sufficient corrosion resistance, and a method of manufacturing the same. The rare-earth element in accordance with a preferred embodiment comprises a magnet body containing a rare-earth element, and a protective layer formed on a surface of the magnet body. The protective layer in accordance with a preferred embodiment includes a first layer covering the magnet body and containing a rare-earth element, and a second layer covering the first layer and containing substantially no rare-earth element. Another protective layer in accordance with a preferred embodiment comprises an inner protective layer and an outer protective layer successively from the magnet body side. The outer protective layer is any of an oxide layer, a resin layer, a metal salt layer, and a layer containing an organic-inorganic hybrid compound.Type: ApplicationFiled: March 31, 2005Publication date: February 28, 2008Applicant: TDK CORPORATIONInventors: Masashi Miwa, Takeshi Sakamoto, Jun Hagiwara, Masami Mori, Mutsuko Nakano, Hiroshi Kawahara, Hiroki Kitamura
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Publication number: 20070229209Abstract: A preferred varistor body has a structure of alternately laminated internal electrode layer and varistor layer made of a varistor material. The varistor layer has a composition containing Zn, Co, Pr, Li, and Zr. The analysis of varistor body in the depth direction from the surface thereof gives the Li content of 0.08 parts by mass or less to 100 parts by mass of the sum of Zn, Co, and Pr contents at a level of 2 ?m at the surface side above the reference depth where the Zr content becomes almost constant.Type: ApplicationFiled: March 27, 2007Publication date: October 4, 2007Applicant: TDK CORPORATIONInventor: Mutsuko Nakano
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Publication number: 20070229208Abstract: A preferred varistor body 2 has a structure of alternately laminated internal electrode layer 12 and varistor layer 14. The varistor layer 14 has a composition containing ZnO as the main component, and Co, Pr, and Zr as the auxiliary components. An analysis of the varistor body 2 in the depth direction from the surface thereof satisfies the formula (1) and (2): 0.4×Z1/Z0+0.5?P1/P0?0.4×Z1/Z0+0.9 ??(1) 1<Z1/Z0<2.2 ??(2) where, Z0 is the Zr content at a reference depth where the Zr content becomes almost constant, Z1 is the Zr content at a level of 2 ?m at the surface side above the reference depth, P0 is the Pr content at the reference depth, and P1 is the Pr content at a level of 2 ?m at the surface side above the reference depth.Type: ApplicationFiled: March 27, 2007Publication date: October 4, 2007Applicant: TDK CORPORATIONInventor: Mutsuko Nakano
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Patent number: 7237331Abstract: Provided is a method of manufacturing an electronic part having a plurality of wiring patterns and an insulating layer interposed between the wiring patterns and serving to establish electrical connection between the wiring patterns through an interlayer connecting portion penetrating the insulating layer. In the method, a first step of forming a wiring pattern and a columnar conductor and a second step of forming a layer having a uniform thickness by bonding an insulating sheet from above and pressing the insulating sheet to the height of the columnar conductor with the columnar conductor as a stopper so as to conform the thickness of the insulating sheet to the height of the columnar conductor are repeated.Type: GrantFiled: December 17, 2003Date of Patent: July 3, 2007Assignee: TDK CorporationInventors: Masashi Gotoh, Kaoru Kawasaki, Mutsuko Nakano, Hiroshi Yamamoto
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Publication number: 20060258057Abstract: An insulating sheet including resin is attached to a conductor portion composed of a wiring pattern and a columnar conductor from above. Then pressure and heat are applied to the insulating sheet using the columnar conductor as a stopper to form a layer of resin having a uniform thickness with the height of the columnar conductor being a reference to cover the conductor portion. In such method for manufacturing an electronic part, a projecting portion is formed outside a part formation area. In this substrate sheet, the amount of the resin required for forming the layer is computed based on the proportion of the volume taken up by the conductor portion in a domain including the projecting portion, and the thickness of the insulating sheet is set in accordance with the computed resin amount.Type: ApplicationFiled: February 26, 2004Publication date: November 16, 2006Inventors: Masashi Gotoh, Kaoru Kawasaki, Hiroshi Yamamoto, Mutsuko Nakano, Hajime Kuwajima
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Publication number: 20060234085Abstract: The invention provides a bonded magnet having more excellent rust inhibiting performance than the prior art, and a process for its manufacture. The bonded magnet manufacturing process of the invention is a process for manufacture of a bonded magnet wherein a protective layer is formed on the surface of a bonded magnet body containing a rare earth element, the process comprising a step of contacting the bonded magnet body with a solution containing a phosphate and an acid ion to form a phosphorus-containing protective layer on the surface of the bonded magnet body.Type: ApplicationFiled: March 27, 2006Publication date: October 19, 2006Applicant: TDK CorporationInventor: Mutsuko Nakano
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Publication number: 20060223307Abstract: Provided are a process for producing an electronic component which is superior in heat dissipation property, helps to achieve low resistivity, and makes it possible to prevent detachment of the conductor part from the base material, and an electronic component produced by such a process. The electronic component includes: a base material equipped with a core material and having a conductor layer on at least one surface thereof; a via hole formed through laser irradiation from the other surface side of the base material; a first plating layer formed by using the conductor layer as an electrode so as to cover the core material, which is exposed on an inner wall surface of the via hole; an electroless plating layer which is formed on the upper side of the first plating layer and which is in close contact with the inner wall surface of the via hole; and a second plating layer formed by using the conductor layer as an electrode so as to cover the electroless plating layer.Type: ApplicationFiled: March 18, 2004Publication date: October 5, 2006Applicant: TDK CorporationInventors: Masashi Gotoh, Kaoru Kawasaki, Hiroshi Yamamoto, Mutsuko Nakano