Patents by Inventor Tsunetsugu Imanishi
Tsunetsugu Imanishi 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: 20100091464Abstract: The present invention relates to a heat dissipation structure board and a module using this heat dissipation structure used for purpose required of high reliability such as a hybrid vehicle or an electric vehicle and to a method of manufacturing the heat dissipation structure. A resin structure is disposed on a lead frame constituting a heat dissipation board and an odd-shaped electronic component or the like mounted on this lead frame or the like to cover up the lead frame and the odd-shaped electronic component or the like, and this resin structure is fixed to a metal plate, a chassis of a device and the like to constitute the heat dissipation structure board as a whole, whereby fixing strengths of fixing the lead frame and the odd-shaped electronic component or the like, a bonding strength at an interface between the lead frame and the heat transfer layer and the like can be reinforced.Type: ApplicationFiled: November 28, 2008Publication date: April 15, 2010Applicant: PANASONIC CORPORATIONInventors: Tohru Ohnishi, Hitoshi Kouno, Toshiyuki Taniguchi, Koji Nakashima, Toshiyuki Nakata, Tsunetsugu Imanishi, Keiichi Nakao
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Patent number: 7469469Abstract: The present invention provides a coil component and a method for making the coil component that includes: a coil section having a through hole and composed of a plurality of ring sections formed of a metallic flat plate disposed in a plane, connected to each other at ring connecting sections, having slits formed by cutting part of the ring sections, and bent at the ring connecting sections and placed one on top of another, terminals connected to the coiled section, and a package member covering the coil section and projecting the terminals therefrom. With this structure, the coil component operates in a high-frequency region, ensuring an inductance and infinitesimal direct-current resistance while being adaptable to a large current, and can be miniaturized.Type: GrantFiled: October 27, 2005Date of Patent: December 30, 2008Assignee: Panasonic CorporationInventors: Toshiyuki Nakata, Tsunetsugu Imanishi, Hidetoshi Hiwatashi, Hiroyuki Hamamoto
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Patent number: 7425883Abstract: A magnetic element for multi-phase is composed by burying a plurality of coils in a composite magnetic material such that a negative coupling of magnetic fluxes or a positive coupling of magnetic fluxes exists between at least two coils. This structure more miniaturizes inductors, or choke coils as the multi-phase magnetic element suitably used for application of a large current to many kinds of electronic equipment. Such multi-phase magnetic element has an excellent ripple current property.Type: GrantFiled: April 13, 2006Date of Patent: September 16, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Nobuya Matsutani, Hidenori Uematsu, Tsunetsugu Imanishi
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Patent number: 7401398Abstract: A magnetic element for multi-phase is composed by burying a plurality of coils in a composite magnetic material such that a negative coupling of magnetic fluxes or a positive coupling of magnetic fluxes exists between at least two coils. This structure more miniaturizes inductors, or choke coils as the multi-phase magnetic element suitably used for application of a large current to many kinds of electronic equipment. Such multi-phase magnetic element has an excellent ripple current property.Type: GrantFiled: July 20, 2005Date of Patent: July 22, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Nobuya Matsutani, Hidenori Uematsu, Tsunetsugu Imanishi
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Publication number: 20080143469Abstract: A magnetic device of smaller size and lower profile comprising a coil conductor of high inductance and low resistance is provided. The magnetic device comprises a coil conductor and a multilayer magnetic layer formed so as to cover the periphery of the coil conductor. Further, a magnetic device having higher inductance value and lower conductor resistance value (AC resistance) by selecting a magnetic layer capable of suppressing the eddy current and having excellent magnetic characteristics even designed with smaller size and lower profile.Type: ApplicationFiled: February 14, 2008Publication date: June 19, 2008Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Nobuya Matsutani, Tsunetsugu Imanishi
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Patent number: 7365626Abstract: A magnetic device of smaller size and lower profile comprising a coil conductor of high inductance and low resistance is provided. The magnetic device comprises a coil conductor and a multilayer magnetic layer formed so as to cover the periphery of the coil conductor. Further, a magnetic device having higher inductance value and lower conductor resistance value (AC resistance) by selecting a magnetic layer capable of suppressing the eddy current and having excellent magnetic characteristics even designed with smaller size and lower profile.Type: GrantFiled: October 6, 2004Date of Patent: April 29, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Nobuya Matsutani, Tsunetsugu Imanishi
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Publication number: 20070262840Abstract: A magnetic element for multi-phase is composed by burying a plurality of coils in a composite magnetic material such that a negative coupling of magnetic fluxes or a positive coupling of magnetic fluxes exists between at least two coils. This structure more miniaturizes inductors, or choke coils as the multi-phase magnetic element suitably used for application of a large current to many kinds of electronic equipment. Such multi-phase magnetic element has an excellent ripple current property.Type: ApplicationFiled: April 13, 2006Publication date: November 15, 2007Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Nobuya Matsutani, Hidenori Uematsu, Tsunetsugu Imanishi
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Patent number: 7259648Abstract: The invention is comprised of a coil group arranging a plurality of terminal-integrated type coils (1), (4) formed by bending a metal sheet in a preset development form and having a predetermined positional relationship, and a magnetic material (7) burying therein the coil group. For example, axes of the plurality of coils (1), (4) constituting the coil group, are arranged in parallel wherein the center point of at least one coil selected from the plurality of coils (1), (4) and the center point of a coil other than the selected coil are in an staggered arrangement. Due to this, an array type choke coil can be realized which is thin overall and operable with a large current in a high frequency band.Type: GrantFiled: December 11, 2003Date of Patent: August 21, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Nobuya Matsutani, Tsunetsugu Imanishi, Hidenori Uematsu
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Patent number: 7236073Abstract: An inductance part is provided which includes: a coil which is formed by bending a metal plate into a coil shape; a magnetic body in which the coil is buried; and a short ring which faces the coil.Type: GrantFiled: June 8, 2004Date of Patent: June 26, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Nobuya Matsutani, Tsunetsugu Imanishi, Hidenori Uematsu
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Patent number: 7199693Abstract: The choke coil disclosed comprises: coils incorporated with terminals and intermediate taps manufactured of die cut metal plates; and a magnetic powder in which the coils are embedded.Type: GrantFiled: January 14, 2004Date of Patent: April 3, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Nobuya Matsutani, Tsunetsugu Imanishi, Hidenori Uematsu
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Patent number: 7158001Abstract: A choke coil according to the invention is configured to include: a coil incorporated with terminals and/or intermediate tap, the coil configured of a metal plate being punched and folded; a magnetic material buried with the coil therein; and a radiator of a material with excellent thermal conductivity disposed on a surface of the magnetic material. A small-sized, low-profile choke coil structurally stable with excellent heat dissipation is to be provided.Type: GrantFiled: March 23, 2004Date of Patent: January 2, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Nobuya Matsutani, Tsunetsugu Imanishi, Hidenori Uematsu
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Publication number: 20060145804Abstract: The invention is comprised of a coil group arranging a plurality of terminal-integrated type coils (1), (4) formed by bending a metal sheet in a preset development form and having a predetermined positional relationship, and a magnetic material (7) burying therein the coil group. For example, axes of the plurality of coils (1), (4) constituting the coil group, are arranged in parallel wherein the center point of at least one coil selected from the plurality of coils (1), (4) and the center point of a coil other than the selected coil are in an staggered arrangement. Due to this, an array type choke coil can be realized which is thin overall and operable with a large current in a high frequency band.Type: ApplicationFiled: December 11, 2003Publication date: July 6, 2006Inventors: Nobuya Matsutani, Tsunetsugu Imanishi, Hidenori Uematsu
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Patent number: 7064643Abstract: A magnetic element for multi-phase is composed by burying a plurality of coils in a composite magnetic material such that a negative coupling of magnetic fluxes or a positive coupling of magnetic fluxes exists between at least two coils. This structure more miniaturizes inductors, or choke coils as the multi-phase magnetic element suitably used for application of a large current to many kinds of electronic equipment. Such multi-phase magnetic element has an excellent ripple current property.Type: GrantFiled: August 25, 2003Date of Patent: June 20, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Nobuya Matsutani, Hidenori Uematsu, Tsunetsugu Imanishi
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Patent number: 7015783Abstract: A coil component includes a coil 2 having a through-hole 1, a magnetic core encapsulating the coil, and a terminal 4. The magnetic core includes a top portion 11 disposed at an upper part of the coil, a bottom portion 12 disposed at a lower part of the coil, and a middle portion 13. An outer layer thickness of the middle portion (W1) is less than a diameter of the through-hole, while the top portion and the bottom portion are higher in density than the middle portion. The configuration of the present invention provides a small size coil component with less occurrence of magnetic saturation to prevent lowering of inductance even with thin top 11 and bottom portions 11, 12. The coil component further has improved reliability.Type: GrantFiled: February 26, 2002Date of Patent: March 21, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Toshiyuki Nakata, Tsunetsugu Imanishi, Hiroyuki Hamamoto, Hidetoshi Hiwatashi, Tomokazu Kitagawa
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Publication number: 20060049908Abstract: The present invention provides a coil component includes: a coil section having a through hole and composed of a plurality of ring sections formed of a metallic flat plate disposed in a plane, connected to each other at ring connecting sections, having slits formed by cutting part of the ring sections, and bent at the ring connecting sections and placed one on top of another, terminals connected to the coil section, and a package member covering the coil section and projecting the terminals therefrom. With this structure, the coil component operates in a high-frequency region, ensuring an inductance and infinitesimal direct-current resistance while being adaptable to a large current, and can be miniaturized.Type: ApplicationFiled: October 27, 2005Publication date: March 9, 2006Applicant: Matsushita Elec. Ind. Co., Ltd.Inventors: Toshiyuki Nakata, Tsunetsugu Imanishi, Hidetoshi Hiwatashi, Hiroyuki Hamamoto
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Patent number: 6985062Abstract: The present invention provides a coil component includes: a coil section having a through hole and composed of a plurality of ring sections formed of a metallic flat plate disposed in a plane, connected to each other at ring connecting sections, having slits formed by cutting part of the ring sections, and bent at the ring connecting sections and placed one on top of another, terminals connected to the coil section, and a package member covering the coil section and projecting the terminals therefrom. With this structure, the coil component operates in a high-frequency region, ensuring an inductance and infinitesimal direct-current resistance while being adaptable to a large current, and can be miniaturized.Type: GrantFiled: September 9, 2003Date of Patent: January 10, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Toshiyuki Nakata, Tsunetsugu Imanishi, Hidetoshi Hiwatashi, Hiroyuki Hamamoto
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Publication number: 20050254167Abstract: A magnetic element for multi-phase is composed by burying a plurality of coils in a composite magnetic material such that a negative coupling of magnetic fluxes or a positive coupling of magnetic fluxes exists between at least two coils. This structure more miniaturizes inductors, or choke coils as the multi-phase magnetic element suitably used for application of a large current to many kinds of electronic equipment. Such multi-phase magnetic element has an excellent ripple current property.Type: ApplicationFiled: July 20, 2005Publication date: November 17, 2005Applicant: Matsuhita ElectricInventors: Nobuya Matsutani, Hidenori Uematsu, Tsunetsugu Imanishi
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Publication number: 20050073384Abstract: A magnetic device of smaller size and lower profile comprising a coil conductor of high inductance and low resistance is provided. The magnetic device comprises a coil conductor and a multilayer magnetic layer formed so as to cover the periphery of the coil conductor. Further, a magnetic device having higher inductance value and lower conductor resistance value (AC resistance) by selecting a magnetic layer capable of suppressing the eddy current and having excellent magnetic characteristics even designed with smaller size and lower profile.Type: ApplicationFiled: October 6, 2004Publication date: April 7, 2005Inventors: Nobuya Matsutani, Tsunetsugu Imanishi
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Publication number: 20040246084Abstract: A magnetic element for multi-phase is composed by burying a plurality of coils in a composite magnetic material such that a negative coupling of magnetic fluxes or a positive coupling of magnetic fluxes exists between at least two coils. This structure more miniaturizes inductors, or choke coils as the multi-phase magnetic element suitably used for application of a large current to many kinds of electronic equipment. Such multi-phase magnetic element has an excellent ripple current property.Type: ApplicationFiled: March 9, 2004Publication date: December 9, 2004Inventors: Nobuya Matsutani, Hidenori Uematsu, Tsunetsugu Imanishi
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Publication number: 20040246090Abstract: An inductance part is provided which includes: a coil which is formed by bending a metal plate into a coil shape; a magnetic body in which the coil is buried; and a short ring which faces the coil.Type: ApplicationFiled: June 8, 2004Publication date: December 9, 2004Inventors: Nobuya Matsutani, Tsunetsugu Imanishi, Hidenori Uematsu