Patents by Inventor Chiomi SATO
Chiomi SATO 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: 11783988Abstract: A method of manufacturing an inductor element includes preparing an insert member including a winding portion where a conductor is wound in a coil shape. A plurality of preliminary green compacts is obtained by conducting a preliminary compression molding of a granule containing a magnetic powder and a resin at a pressure of 2.5×102 to 1×103 MPa. The insert member and the plurality of preliminary green compacts are integrated so that a joint interface of the plurality of preliminary green compacts is formed intermittently.Type: GrantFiled: September 11, 2020Date of Patent: October 10, 2023Assignee: TDK CORPORATIONInventors: Yasuhide Yamashita, Katsushi Yasuhara, Chiomi Sato
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Patent number: 11605490Abstract: The present invention is an inductor element having a conductor wound in a coil form, and a core part surrounding the coil and including a magnetic powder and a resin. The core part includes a top board part and a bottom board part respectively covering both ends of the coil, and an outer circumference part positioned at an outer circumference side of the coil, and a resin content of the outer circumference part is larger than a resin content of the top board part and also larger than a resin content of the bottom board part.Type: GrantFiled: April 7, 2020Date of Patent: March 14, 2023Assignee: TDK CORPORATIONInventors: Yasuhide Yamashita, Chiomi Sato
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Patent number: 11043320Abstract: A dust core includes a metal magnetic material, a resin, and an insulation film. The insulation film contacts with a surface of the metal magnetic material and covers the metal magnetic material. The insulation film includes a first film and a second film. The first film contacts with the surface of the metal magnetic material. The second film contacts with a surface of the first film. A density of the first film is higher than a density of the second film.Type: GrantFiled: March 8, 2018Date of Patent: June 22, 2021Assignee: TDK CORPORATIONInventors: Masahiro Kamiya, Yasuhide Yamashita, Chiomi Sato, Yousuke Futamata, Ryoma Nakazawa, Takeshi Takahashi, Hiroyuki Ono
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Patent number: 10984941Abstract: An inductor element includes a wire-winding portion and a core portion. In the wire-winding portion, a conductor is wound in a coil shape. The core portion surrounds the wire-winding portion and contains a magnetic powder and a resin. An inner-core central region is a region of the core portion within a distance from a winding axis center of the wire-winding portion toward an existing region of the wire-winding portion in an outward direction perpendicular to the winding axis center. A top-plate central region is a region of the core portion within a distance from the winding axis center toward a no-existing region of the wire-winding portion in the outward direction. S??S???2% is satisfied, where S? (%) and S? (%) are respectively an area ratio of the magnetic powder in the inner-core central region and the top-plate central region.Type: GrantFiled: May 1, 2018Date of Patent: April 20, 2021Assignee: TDK CORPORATIONInventors: Yasuhide Yamashita, Katsushi Yasuhara, Chiomi Sato, Syota Goto
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Patent number: 10886056Abstract: An inductor element includes a wire-winding portion and a core portion. In the wire-winding portion, a conductor is wound in a coil shape. The core portion surrounds the wire-winding portion and contains a magnetic powder and a resin. The wire-winding portion includes an inner circumferential surface. A winding-wire inner circumferential neighboring region is a region of the core portion within a distance from the inner circumferential surface toward a winding axis of the wire-winding portion. An inner-core central region is a region of the core portion within a distance from the winding axis center toward an existing region of the wire-winding portion in an outward direction perpendicular to the winding axis center. S??S?1?5.0% is satisfied, where S?(%) and S?1(%) are respectively an area ratio of a magnetic powder in the inner-core central region and the winding-wire inner circumferential neighboring region.Type: GrantFiled: May 1, 2018Date of Patent: January 5, 2021Assignee: TDK CORPORATIONInventors: Yasuhide Yamashita, Katsushi Yasuhara, Chiomi Sato
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Publication number: 20200411226Abstract: A method of manufacturing an inductor element includes preparing an insert member including a winding portion where a conductor is wound in a coil shape. A plurality of preliminary green compacts is obtained by conducting a preliminary compression molding of a granule containing a magnetic powder and a resin at a pressure of 2.5×102 to 1×103 MPa. The insert member and the plurality of preliminary green compacts are integrated so that a joint interface of the plurality of preliminary green compacts is formed intermittently.Type: ApplicationFiled: September 11, 2020Publication date: December 31, 2020Applicant: TDK CORPORATIONInventors: Yasuhide YAMASHITA, Katsushi YASUHARA, Chiomi SATO
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Publication number: 20200328021Abstract: The present invention is an inductor element having a conductor wound in a coil form, and a core part surrounding the coil and including a magnetic powder and a resin. The core part includes a top board part and a bottom board part respectively covering both ends of the coil, and an outer circumference part positioned at an outer circumference side of the coil, and a resin content of the outer circumference part is larger than a resin content of the top board part and also larger than a resin content of the bottom board part.Type: ApplicationFiled: April 7, 2020Publication date: October 15, 2020Applicant: TDK CORPORATIONInventors: Yasuhide YAMASHITA, Chiomi SATO
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Patent number: 10804026Abstract: A method of manufacturing an inductor element includes preparing an insert member including a winding portion where a conductor is wound in a coil shape. A plurality of preliminary green compacts is obtained by conducting a preliminary compression molding of a granule containing a magnetic powder and a resin at a pressure of 2.5×102 to 1×103 MPa. The insert member and the plurality of preliminary green compacts are integrated so that a joint interface of the plurality of preliminary green compacts is formed intermittently.Type: GrantFiled: December 20, 2017Date of Patent: October 13, 2020Assignee: TDK CORPORATIONInventors: Yasuhide Yamashita, Katsushi Yasuhara, Chiomi Sato
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Publication number: 20180322998Abstract: An inductor element includes a wire-winding portion and a core portion. In the wire-winding portion, a conductor is wound in a coil shape. The core portion surrounds the wire-winding portion and contains a magnetic powder and a resin. An inner-core central region is a region of the core portion within a distance from a winding axis center of the wire-winding portion toward an existing region of the wire-winding portion in an outward direction perpendicular to the winding axis center. A top-plate central region is a region of the core portion within a distance from the winding axis center toward a no-existing region of the wire-winding portion in the outward direction. S??S???2% is satisfied, where S? (%) and s? (%) are respectively an area ratio of the magnetic powder in the inner-core central region and the top-plate central region.Type: ApplicationFiled: May 1, 2018Publication date: November 8, 2018Applicant: TDK CORPORATIONInventors: Yasuhide YAMASHITA, Katsushi YASUHARA, Chiomi SATO, Syota GOTO
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Publication number: 20180322997Abstract: An inductor element includes a wire-winding portion and a core portion. In the wire-winding portion, a conductor is wound in a coil shape. The core portion surrounds the wire-winding portion and contains a magnetic powder and a resin. The wire-winding portion includes an inner circumferential surface. A winding-wire inner circumferential neighboring region is a region of the core portion within a distance from the inner circumferential surface toward a winding axis of the wire-winding portion. An inner-core central region is a region of the core portion within a distance from the winding axis center toward an existing region of the wire-winding portion in an outward direction perpendicular to the winding axis center. S??S?1?5.0% is satisfied, where S?(%) and S?1 (%) are respectively an area ratio of a magnetic powder in the inner-core central region and the winding-wire inner circumferential neighboring region.Type: ApplicationFiled: May 1, 2018Publication date: November 8, 2018Applicant: TDK CORPORATIONInventors: Yasuhide YAMASHITA, Katsushi YASUHARA, Chiomi SATO
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Publication number: 20180294084Abstract: A dust core includes a metal magnetic material, a resin, and an insulation film. The insulation film contacts with a surface of the metal magnetic material and covers the metal magnetic material. The insulation film includes a first film and a second film. The first film contacts with the surface of the metal magnetic material. The second film contacts with a surface of the first film. A density of the first film is higher than a density of the second film.Type: ApplicationFiled: March 8, 2018Publication date: October 11, 2018Applicant: TDK CORPORATIONInventors: Masahiro KAMIYA, Yasuhide YAMASHITA, Chiomi SATO, Yousuke FUTAMATA, Ryoma NAKAZAWA, Takeshi TAKAHASHI, Hiroyuki ONO
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Publication number: 20180204661Abstract: A method of manufacturing an inductor element includes preparing an insert member including a winding portion where a conductor is wound in a coil shape. A plurality of preliminary green compacts is obtained by conducting a preliminary compression molding of a granule containing a magnetic powder and a resin at a pressure of 2.5×102 to 1×103 MPa. The insert member and the plurality of preliminary green compacts are integrated so that a joint interface of the plurality of preliminary green compacts is formed intermittently.Type: ApplicationFiled: December 20, 2017Publication date: July 19, 2018Applicant: TDK CORPORATIONInventors: Yasuhide YAMASHITA, Katsushi YASUHARA, Chiomi SATO