Patents by Inventor Yasuomi TAKAHASHI
Yasuomi TAKAHASHI 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: 20230411062Abstract: The present invention provides a choke coil suitable for high-frequency circuits with high occupancy ratio and high manufacturing efficiency.Type: ApplicationFiled: September 7, 2021Publication date: December 21, 2023Applicant: SHT CorporationInventors: Masafumi INOUE, Yasuomi TAKAHASHI, Tsunetsugu IMANISHI
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Patent number: 10546687Abstract: A method is described for cutting a plurality of molded cores. Each core includes an annular magnetic body made of a magnetic material and a covering part made of an insulating resin that covers the magnetic body. The method includes coupling each of the molded cores side by side in an axial direction, and cutting the molded cores at a first cutting part and at a second cutting part that transect an outer peripheral surface and an inner peripheral surface and approach each other toward an inner periphery direction of the molded core. The main body has a main body-side first end face formed by cutting at the first cutting part and a main body-side second end face formed by cutting at the second cutting part. A segment has a segment-side first end face formed by cutting at the first cutting part and a segment-side second end face formed by cutting at the second cutting part.Type: GrantFiled: June 2, 2016Date of Patent: January 28, 2020Assignee: SHT CORPORATION LIMITEDInventors: Masafumi Inoue, Yasuomi Takahashi, Tsunetsugu Imanishi, Hitoshi Yoshimori
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Publication number: 20190311845Abstract: The present invention provides a bobbin-shaped air-cooled common mode choke coil that can suppress heat generation. The air-cooled common mode choke coil 10 according to the present invention is a common mode choke coil 10 in which an annular core 30 is housed in an annular bobbin 20, and a coil 40 is wound around the outer circumference of the bobbin 20. An airflow path A that allows an airflow B to flow therethrough is formed between the bobbin 20 and the core 30. The bobbin 20 includes one or more openings 21 and 22 that are in communication with the airflow path A. Flanges 23 and 24 are provided protruding along the peripheral edges of each of the openings 21 and 22. The openings 21 and 22 are desirably formed in the outer circumferential surface of the bobbin 20 and reache the upper and lower surfaces of the bobbin 20.Type: ApplicationFiled: May 26, 2017Publication date: October 10, 2019Applicant: SHT Corporation LimitedInventors: Tsunetsugu IMANISHI, Yasuomi TAKAHASHI
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Patent number: 10312005Abstract: The present invention provides a gapped core that facilitates adjustment of DC bias characteristics, has little variation in those characteristics, and also allows for excellent manufacturing efficiency.Type: GrantFiled: June 2, 2016Date of Patent: June 4, 2019Inventors: Yasuomi Takahashi, Masafumi Inoue, Tsunetsugu Imanishi, Hitoshi Yoshimori
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Publication number: 20180158602Abstract: The present invention provides a method for cutting a molded core by which a molded core including a magnetic body are collectively cut.Type: ApplicationFiled: June 2, 2016Publication date: June 7, 2018Applicant: SHT Corporation LimitedInventors: Masafumi INOUE, Yasuomi TAKAHASHI, Tsunetsugu IMANISHI, Hitoshi YOSHIMORI
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Publication number: 20180144856Abstract: The present invention provides a coil apparatus formed by mounting a coil component to a casing. A core coil apparatus according to the present invention has a main body (30) and a segment (40) that are obtained by a molded core (20) including an annular magnetic body made of a magnetic material and an insulating resin covering part that covers the magnetic body being cut at a first cutting part and a second cutting part that transect an outer peripheral surface and an inner peripheral surface and approach each other toward an inner periphery of the molded core, the segment being disposed in a cutout part (31) formed on the main body, the resin covering part (22) having a main body-side flange part (25) and a segment-side flange part (27) that project toward the outer peripheral side and/or the lateral side, a coil (51) wound around the core and a casing (70) mounted with the core, the casing having a recess (72) into which the main body-side flange part and the segment-side flange part are inserted.Type: ApplicationFiled: June 2, 2016Publication date: May 24, 2018Applicant: SHT Corporation LimitedInventors: Masafumi INOUE, Yasuomi TAKAHASHI, Tsunetsugu IMANISHI, Hitoshi YOSHIMORI
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Publication number: 20180075955Abstract: The present invention provides a gapped core that facilitates adjustment of DC bias characteristics, has little variation in those characteristics, and also allows for excellent manufacturing efficiency.Type: ApplicationFiled: June 2, 2016Publication date: March 15, 2018Applicant: SHT Corporation LimitedInventors: Yasuomi TAKAHASHI, Masafumi INOUE, Tsunetsugu IMANISHI, Hitoshi YOSHIMORI
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Patent number: 9852845Abstract: In order to provide an air core coil fitting apparatus that can automatically fit an air core coil onto a core, an air core coil fitting apparatus includes a holding member, a coil fitting rod, a rod driving member, a pushing member, and a sending member. The holding member holds a core main body that is formed in a ring shape, has a gap extending through the core main body from an inner circumferential face to an outer circumferential face thereof, and allows an air core coil wound in advance to be fitted onto the core main body from one end thereof. On the coil fitting rod, the air core coil that is to be fitted onto the core main body held by the holding member is fitted. The rod driving member brings a front end of the coil fitting rod close to or into contact with the one end of the core main body held by the holding member. The pushing member pushes the air core coil fitted on the coil fitting rod, toward the one end of the core main body.Type: GrantFiled: November 23, 2015Date of Patent: December 26, 2017Assignee: SHT Corporation LimitedInventors: Tsunetsugu Imanishi, Masafumi Inoue, Yasuomi Takahashi, Hitoshi Yoshimori
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Patent number: 9646760Abstract: The present invention provides a common mode choke coil that has a higher coupling factor than that of a conventional common mode choke coil and that is easy to be assembled. A common mode choke coil according to the present invention includes a first coil portion 51 and a second coil portion 52 that are connected to each other in series, and a third coil portion 53 and a fourth coil portion 54 that are connected to each other in series. The first coil portion 51 and the second coil portion 52 are respectively disposed in the first quadrant and the third quadrant of an orthogonal coordinate system and housed in a first bobbin 8a, and the third coil portion 53 and the fourth coil portion 54 are respectively disposed in the fourth quadrant and the second quadrant of the orthogonal coordinate system and housed in a second bobbin 8b. The first bobbin 8a and the second bobbin 8b are fitted to each other, and thereby adjacent case portions of the two bobbins are bonded to each other.Type: GrantFiled: December 17, 2015Date of Patent: May 9, 2017Assignee: SHT Corporation LimitedInventors: Tsunetsugu Imanishi, Yasuomi Takahashi, Masafumi Inoue
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Publication number: 20160189857Abstract: The present invention provides a common mode choke coil that has a higher coupling factor than that of a conventional common mode choke coil and that is easy to be assembled. A common mode choke coil according to the present invention includes a first coil portion 51 and a second coil portion 52 that are connected to each other in series, and a third coil portion 53 and a fourth coil portion 54 that are connected to each other in series. The first coil portion 51 and the second coil portion 52 are respectively disposed in the first quadrant and the third quadrant of an orthogonal coordinate system and housed in a first bobbin 8a, and the third coil portion 53 and the fourth coil portion 54 are respectively disposed in the fourth quadrant and the second quadrant of the orthogonal coordinate system and housed in a second bobbin 8b. The first bobbin 8a and the second bobbin 8b are fitted to each other, and thereby adjacent case portions of the two bobbins are bonded to each other.Type: ApplicationFiled: December 17, 2015Publication date: June 30, 2016Inventors: Tsunetsugu IMANISHI, Yasuomi TAKAHASHI, Masafumi INOUE
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Publication number: 20160148753Abstract: In order to provide an air core coil fitting apparatus that can automatically fit an air core coil onto a core, an air core coil fitting apparatus includes a holding member, a coil fitting rod, a rod driving member, a pushing member, and a sending member. The holding member holds a core main body that is formed in a ring shape, has a gap extending through the core main body from an inner circumferential face to an outer circumferential face thereof, and allows an air core coil wound in advance to be fitted onto the core main body from one end thereof. On the coil fitting rod, the air core coil that is to be fitted onto the core main body held by the holding member is fitted. The rod driving member brings a front end of the coil fitting rod close to or into contact with the one end of the core main body held by the holding member. The pushing member pushes the air core coil fitted on the coil fitting rod, toward the one end of the core main body.Type: ApplicationFiled: November 23, 2015Publication date: May 26, 2016Applicant: SHT Corporation LimitedInventors: Tsunetsugu IMANISHI, Masafumi INOUE, Yasuomi TAKAHASHI, Hitoshi YOSHIMORI
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Patent number: D826857Type: GrantFiled: February 9, 2017Date of Patent: August 28, 2018Assignee: SHT Corporation LimitedInventors: Tsunetsugu Imanishi, Yasuomi Takahashi, Masafumi Inoue