Patents by Inventor Junetsu Tamura
Junetsu Tamura 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: 7415757Abstract: A method for manufacturing a coil-embedded dust core with a small variation in inductance value with efficiency includes a step (a) of charging soft magnetic metal powder including an insulating material, composing a green body 10, so as to cover a coil 1, and (b) compacting the soft magnetic metal powder covering the coil 1 in an axial direction of the coil 1. In the step (b), the soft magnetic metal powder is compacted while an amount of the soft metal powder charged into the part corresponding to the winding section is kept smaller than an amount of the soft magnetic metal powder charged into the other part that are not corresponding to the winding section, with an upper surface or a lower surface of the winding section as a reference.Type: GrantFiled: May 26, 2005Date of Patent: August 26, 2008Assignee: TDK CorporationInventors: Sadaki Satoh, Junetsu Tamura, Hideharu Moro, Tsuneo Suzuki
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Publication number: 20050219027Abstract: It is an object to provide a method for manufacturing a coil-embedded dust core with a small variation in inductance value with efficiency and the like. A step (a) of charging soft magnetic metal powder including an insulating material, composing a green body 10, so as to cover a coil 1, and a step (b) of compacting the soft magnetic metal powder covering the coil 1 in an axial direction of the coil 1 are included, and in the step (b), the soft magnetic metal powder is compacted while an amount of the soft metal powder charged into the part corresponding to the winding section is kept smaller than an amount of the soft magnetic metal powder charged into the other part that are not corresponding to the winding section, with an upper surface or a lower surface of the winding section as a reference.Type: ApplicationFiled: May 26, 2005Publication date: October 6, 2005Inventors: Sadaki Satoh, Junetsu Tamura, Hideharu Moro, Tsuneo Suzuki
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Patent number: 6940387Abstract: A coil-embedded dust core and a method for manufacturing the coil-embedded dust core are provided. The coil-embedded dust core comprises a coil formed from a flat conductor wound in a coil configuration, and a green body consisting of insulating material-coated ferromagnetic metal particles. This results in a coil-embedded dust core more compact in size but with larger inductance. A rectangular wire can be used as the flat conductor. In addition, parts of the coil may function as terminal sections. In this case, the terminal sections of the coil may be formed wider than other part of the coil. The coil-embedded dust core is less prone to joint failures between a coil and terminal sections and to insulation failures of the coil and the terminal section with respect to the magnetic powder. The coil-embedded dust core is more compact while achieving larger inductance.Type: GrantFiled: April 2, 2004Date of Patent: September 6, 2005Assignee: TDK CorporationInventors: Kazuhiko Shibata, Takashi Nagasaka, Junetsu Tamura, Yasuhiko Kitajima, Hideharu Moro, Tsutomu Chou, Tsuneo Suzuki
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Publication number: 20050030143Abstract: It is an object to provide a method for manufacturing a coil-embedded dust core with a small variation in inductance value with efficiency and the like. A step (a) of charging soft magnetic metal powder including an insulating material, composing a green body 10, so as to cover a coil 1, and a step (b) of compacting the soft magnetic metal powder covering the coil 1 in an axial direction of the coil 1 are included, and in the step (b), the soft magnetic metal powder is compacted while an amount of the soft metal powder charged into the part corresponding to the winding section is kept smaller than an amount of the soft magnetic metal powder charged into the other part that are not corresponding to the winding section, with an upper surface or a lower surface of the winding section as a reference.Type: ApplicationFiled: March 19, 2003Publication date: February 10, 2005Inventors: Sadaki Satoh, Junetsu Tamura, Hideharu Moro, Tsuneo Suzuki
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Publication number: 20040189431Abstract: A coil-embedded dust core and a method for manufacturing the coil-embedded dust core are provided. The coil-embedded dust core comprises a coil formed from a flat conductor wound in a coil configuration, and a green body consisting of insulating material-coated ferromagnetic metal particles. This results in a coil-embedded dust core more compact in size but with larger inductance. A rectangular wire can be used as the flat conductor. In addition, parts of the coil may function as terminal sections. In this case, the terminal sections of the coil may be formed wider than other part of the coil. The coil-embedded dust core is less prone to joint failures between a coil and terminal sections and to insulation failures of the coil and the terminal section with respect to the magnetic powder. The coil-embedded dust core is more compact while achieving larger inductance.Type: ApplicationFiled: April 2, 2004Publication date: September 30, 2004Applicant: TDK CorporationInventors: Kazuhiko Shibata, Takashi Nagasaka, Junetsu Tamura, Yasuhiko Kitajima, Hideharu Moro, Tsutomu Chou, Tsuneo Suzuki
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Patent number: 6791445Abstract: A coil-embedded dust core and a method for manufacturing the coil-embedded dust core are provided. The coil-embedded dust core comprises a coil formed from a flat conductor wound in a coil configuration, and a green body consisting of insulating material-coated ferromagnetic metal particles. This results in a coil-embedded dust core more compact in size but with larger inductance. A rectangular wire can be used as the flat conductor. In addition, parts of the coil may function as terminal sections. In this case, the terminal sections of the coil may be formed wider than other part of the coil. The coil-embedded dust core is less prone to joint failures between a coil and terminal sections and to insulation failures of the coil and the terminal section with respect to the magnetic powder. The coil-embedded dust core is more compact while achieving larger inductance.Type: GrantFiled: February 19, 2002Date of Patent: September 14, 2004Assignee: TDK CorporationInventors: Kazuhiko Shibata, Takashi Nagasaka, Junetsu Tamura, Yasuhiko Kitajima, Hideharu Moro, Tsutomu Chou, Tsuneo Suzuki
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Publication number: 20040174239Abstract: A coil-embedded dust core and a method for manufacturing the coil-embedded dust core are provided. The coil-embedded dust core comprises a coil formed from a flat conductor wound in a coil configuration, and a green body consisting of insulating material-coated ferromagnetic metal particles. This results in a coil-embedded dust core more compact in size but with larger inductance. A rectangular wire can be used as the flat conductor. In addition, parts of the coil may function as terminal sections. In this case, the terminal sections of the coil may be formed wider than other part of the coil. The coil-embedded dust core is less prone to joint failures between a coil and terminal sections and to insulation failures of the coil and the terminal section with respect to the magnetic powder. The coil-embedded dust core is more compact while achieving larger inductance.Type: ApplicationFiled: March 19, 2004Publication date: September 9, 2004Applicant: TDK CORPORATIONInventors: Kazuhiko Shibata, Takashi Nagasaka, Junetsu Tamura, Yasuhiko Kitajima, Hideharu Moro, Tsutomu Chou, Tsuneo Suzuki
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Publication number: 20030214379Abstract: A method of real time ultrasound imaging of an object in at least three two-dimensional scan planes that are rotated around a common axis, is given, together with designs of ultrasound transducer arrays that allows for such imaging. The method is also introduced into a monitoring situation of cardiac function where, combined with other measurements as for example the LV pressure, physiological parameters like ejection fraction and muscular fiber stress is calculated.Type: ApplicationFiled: March 19, 2003Publication date: November 20, 2003Applicant: TDK CORPORATIONInventors: Sadaki Satoh, Junetsu Tamura, Hideharu Moro, Tsuneo Suzuki
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Publication number: 20020158739Abstract: A coil-embedded dust core and a method for manufacturing the coil-embedded dust core are provided. The coil-embedded dust core comprises a coil formed from a flat conductor wound in a coil configuration, and a green body consisting of insulating material-coated ferromagnetic metal particles. This results in a coil-embedded dust core more compact in size but with larger inductance. A rectangular wire can be used as the flat conductor. In addition, parts of the coil may function as terminal sections. In this case, the terminal sections of the coil may be formed wider than other part of the coil. The coil-embedded dust core is less prone to joint failures between a coil and terminal sections and to insulation failures of the coil and the terminal section with respect to the magnetic powder. The coil-embedded dust core is more compact while achieving larger inductance.Type: ApplicationFiled: February 19, 2002Publication date: October 31, 2002Applicant: TDK CORPORATIONInventors: Kazuhiko Shibata, Takashi Nagasaka, Junetsu Tamura, Yasuhiko Kitajima, Hideharu Moro, Tsutomu Chou, Tsuneo Suzuki