Patents by Inventor Yuuki Fukuda
Yuuki Fukuda 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: 20130306364Abstract: Disclosed is an electromagnetic wave shielding sheet for use in wireless power transmission which suppresses electromagnetic wave leakage in a broad range and which is easily adaptable to various types of wireless power transmitters. The disclosed electromagnetic wave shielding sheet is used in a wireless transmitter and has a multilayer structure including at least one metal layer and at least one magnetic material layer.Type: ApplicationFiled: May 16, 2011Publication date: November 21, 2013Applicant: NITTO DENKO CORPORATIONInventors: Hidenori Suzuki, Takashi Wano, Masataka Tada, Yuuki Fukuda
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Patent number: 8500922Abstract: The present invention relates to a permanent magnet manufactured by steps of: pulverizing a magnet raw material into fine particles having a grain size of 3 ?m or less; mixing the pulverized magnet raw material with a rust preventive oil in which a high-melting metal element-containing organic compound or a precursor of a high-melting ceramic is dissolved, thereby preparing a slurry; compression molding the slurry to form a molded body; and sintering the molded body.Type: GrantFiled: April 14, 2009Date of Patent: August 6, 2013Assignee: Nitto Denko CorporationInventors: Izumi Ozeki, Katsuya Kume, Junichi Nakayama, Yuuki Fukuda, Toshinobu Hoshino, Tomokazu Horio
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Publication number: 20130120959Abstract: The dielectric sheet of the present invention is made of a sheet having a thickness of 5-30 ?m, which is formed by drying a coated film of a coating liquid containing a resin and a natural graphite powder having an average particle diameter of 10 ?m or less. Preferably, the sheet is formed from a coating liquid containing a resin, a natural graphite powder having an average particle diameter of 10 ?m or less, and a solvent, wherein the content rate of the natural graphite powder to the resin exceeds 5% by volume and is not more than 20% by volume, and the total content of the resin and the natural graphite powder is 10-55 wt %.Type: ApplicationFiled: May 27, 2011Publication date: May 16, 2013Applicant: NITTO DENKO CORPORATIONInventors: Takashi Wano, Masataka Tada, Yuuki Fukuda, Osamu Hashimoto, Ryoji Tamaru
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Patent number: 8333848Abstract: The present invention relates to a permanent magnet manufactured by steps of: wet-pulverizing a high-melting metal element-containing organic compound or a precursor of a high-melting ceramic in a solvent together with a magnet raw material to pulverize the magnet raw material into fine particles having a grain size of 3 ?m or less and to coat a surface of the pulverized magnet raw material with the high-melting metal element-containing organic compound or the precursor of the high-melting ceramic; adding a resin binder to the magnet raw material coated with the high-melting metal element-containing organic compound or the precursor of the high-melting ceramic; producing a slurry by kneading the magnet raw material and the resin binder; molding the slurry into a sheet form to prepare a green sheet; and sintering the green sheet.Type: GrantFiled: April 14, 2009Date of Patent: December 18, 2012Assignee: Nitto Denko CorporationInventors: Izumi Ozeki, Katsuya Kume, Junichi Nakayama, Yuuki Fukuda, Toshinobu Hoshino, Tomokazu Horio
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Patent number: 8211270Abstract: A method of detaching two plates adhered via an adhesive sheet or a curable resin layer, comprising moving, relatively parallel to each other, said two plates to develop a shear stress causing rupture of said adhesive sheet or curable resin layer. According to the present invention, two plates bonded via an adhesive sheet or a curable resin layer can be detached by only moving the two plates relatively parallel to each other. Therefore, even when at least one of the two plates is thin and poor in flexibility, two plates can be detached from each other substantially without a force (load) which causes high distortion (deformation) producing a breakage or crack on the plates. Accordingly, for example, when two optical plates adhered via a transparent adhesive sheet need to be re-bonded, two optical plates can be detached from each other and adhered again. Thus, the production cost of equipment with a display function, which carries a flat-panel display, can be reduced.Type: GrantFiled: November 21, 2008Date of Patent: July 3, 2012Assignee: Nitto Denko CorporationInventors: Tatsuya Suzuki, Ryuuichi Kabutoya, Yuuki Fukuda
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Publication number: 20110267160Abstract: The present invention relates to a permanent magnet manufactured by steps of: pulverizing a magnet raw material into fine particles having a grain size of 3 ?m or less; mixing the pulverized magnet raw material with a rust preventive oil in which a high-melting metal element-containing organic compound or a precursor of a high-melting ceramic is dissolved, thereby preparing a slurry; compression molding the slurry to form a molded body; and sintering the molded body.Type: ApplicationFiled: April 14, 2009Publication date: November 3, 2011Applicant: NITTO DENKO CORPORATIONInventors: Izumi Ozeki, Katsuya Kume, Junichi Nakayama, Yuuki Fukuda, Toshinobu Hoshino, Tomokazu Horio
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Publication number: 20110260904Abstract: An electromagnetic wave absorber includes a dielectric layer, a divided conductive film layer and an electromagnetic wave reflective layer, wherein a ratio of thickness ādā and wavelength ā?ā satisfies a condition of [0.01?d/?0.03], weight per unit area of the electromagnetic wave absorber falls within a range of 1000 g/m2 and 3000 g/m2. The divided conductive film layer is configured such that each side's length of conductive films is dimensioned within a range of 0.5 mm and 4.8 mm and arrangement distance between adjoining conductive films is taken within a range of 0.01 mm and 3 mm.Type: ApplicationFiled: April 25, 2011Publication date: October 27, 2011Applicant: NITTO DENKO CORPORATIONInventors: Yuuki Fukuda, Takashi Wano, Masataka Tada, Osamu Hashimoto
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Publication number: 20110147073Abstract: An electromagnetic radiation absorber is made up of a composite of base material and filler. The base material is formed of high permittivity dielectric material and formed in a cubic shape. The filler is formed of high magnetic permeability material and fills in long holes formed inside the base material in three directions. In the composite, the high permittivity dielectric material and the high magnetic permeability material are arranged in a three-dimensionally continuous manner. Accordingly, a thinned and light-weighted electromagnetic radiation absorber and a method for absorbing electromagnetic radiation are provided which have a high electromagnetic radiation absorbing property with respect to electromagnetic radiation of wide band including electromagnetic radiation of low frequency.Type: ApplicationFiled: September 19, 2008Publication date: June 23, 2011Applicant: NITTO DENKO CORPORATIONInventors: Katsuya Kume, Masataka Tada, Fuyuki Eriguchi, Takezo Hatanaka, Yuuki Fukuda, Toshinobu Hoshino, Osamu Hashimoto, Yuichi Sakumo
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Publication number: 20110043311Abstract: The present invention relates to a permanent magnet manufactured by steps of: pulverizing a magnet raw material; mixing the pulverized magnet raw material with a rust preventive oil in which a Dy compound or a Tb compound is dissolved, thereby preparing a slurry; compression molding the slurry to form a molded body; and sintering the molded body.Type: ApplicationFiled: April 14, 2009Publication date: February 24, 2011Applicant: NITTO DENKO CORPORATIONInventors: Izumi Ozeki, Katsuya Kume, Junichi Nakayama, Yuuki Fukuda, Toshinobu Hoshino, Tomokazu Horio
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Publication number: 20110037548Abstract: The present invention relates to a permanent magnet manufactured by steps of: wet-pulverizing a high-melting metal element-containing organic compound or a precursor of a high-melting ceramic in a solvent together with a magnet raw material to pulverize the magnet raw material into fine particles having a grain size of 3 ?m or less and to coat a surface of the pulverized magnet raw material with the high-melting metal element-containing organic compound or the precursor of the high-melting ceramic; adding a resin binder to the magnet raw material coated with the high-melting metal element-containing organic compound or the precursor of the high-melting ceramic; producing a slurry by kneading the magnet raw material and the resin binder; molding the slurry into a sheet form to prepare a green sheet; and sintering the green sheet.Type: ApplicationFiled: April 14, 2009Publication date: February 17, 2011Applicant: NITTO DENKO CORPORATIONInventors: Izumi Ozeki, Katsuya Kume, Junichi Nakayama, Yuuki Fukuda, Toshinobu Hoshino, Tomokazu Horio
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Publication number: 20110018664Abstract: The present invention relates to a permanent magnet obtained by wet-mixing a Dy compound or a Tb compound with a magnet raw material to coat a surface of the magnet raw material with the Dy compound or the Tb compound, and sintering a green sheet obtained by mixing the resulting magnet raw material with a resin binder and molding the resulting mixture. Since the present invention has the above-mentioned constitution, it becomes possible to sufficiently improve coercive force by Dy or Tb while decreasing the amount of Dy or Tb used. Further, it can be prevented that Dy or Tb is solid-solutionized in magnet particles to decrease residual magnetization.Type: ApplicationFiled: March 17, 2009Publication date: January 27, 2011Applicant: NITTO DENKO CORPORATIONInventors: Izumi Ozeki, Katsuya Kume, Junichi Nakayama, Yuuki Fukuda, Toshinobu Hoshino, Tomokazu Horio
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Publication number: 20110012700Abstract: The present invention relates to a permanent magnet obtained by sintering a green sheet which is produced by mixing a magnet raw material with a resin binder and molding the resulting mixture, and a method for producing the same. Since the present invention has such a constitution, the contraction due to sintering becomes uniform, whereby the deformations such as warpage and depressions do not occur after sintering. Further, it is unnecessary to perform the conventional correcting processing after sintering, which can simplify the production steps, because the pressure unevenness at the time of pressing disappears. Therefore, it becomes possible to mold the permanent magnet with a high degree of dimension accuracy. Furthermore, even when the permanent magnet is reduced in film thickness, the magnetic characteristics are not deteriorated by the processing-deteriorated layer on the surface.Type: ApplicationFiled: March 17, 2009Publication date: January 20, 2011Applicants: NTTO DENKO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Izumi Ozeki, Katsuya Kume, Junichi Nakayama, Yuuki Fukuda, Toshinobu Hoshino, Tomokazu Horio, Kenji Nakamura
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Publication number: 20110012460Abstract: The present invention relates to a permanent magnet for a motor, to be buried in a permanent magnet motor, including: a plurality of sheet magnets for lamination, and an insulating layer arranged between the plurality of sheet magnets for lamination. Since the invention has the above-mentioned constitution, the permanent magnets are free from the problems of temperature elevation and coercive force depression, therefore making it possible to provide a high-power small-sized motor. Furthermore, it is unnecessary to perform the conventional correcting processing after sintering, which can simplify the production steps, and therefore, it becomes possible to mold the permanent magnet with a high degree of dimension accuracy.Type: ApplicationFiled: March 17, 2009Publication date: January 20, 2011Applicants: NITTO DENKO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Izumi Ozeki, Katsuya Kume, Junichi Nakayama, Yuuki Fukuda, Toshinobu Hoshino, Tomokazu Horio, Kenji Nakamura
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Publication number: 20100129658Abstract: A method of detaching two plates adhered via an adhesive sheet or a curable resin layer, comprising moving, relatively parallel to each other, said two plates to develop a shear stress causing rupture of said adhesive sheet or curable resin layer. According to the present invention, two plates bonded via an adhesive sheet or a curable resin layer can be detached by only moving the two plates relatively parallel to each other. Therefore, even when at least one of the two plates is thin and poor in flexibility, two plates can be detached from each other substantially without a force (load) which causes high distortion (deformation) producing a breakage or crack on the plates. Accordingly, for example, when two optical plates adhered via a transparent adhesive sheet need to be re-bonded, two optical plates can be detached from each other and adhered again. Thus, the production cost of equipment with a display function, which carries a flat-panel display, can be reduced.Type: ApplicationFiled: November 21, 2008Publication date: May 27, 2010Inventors: Tatsuya Suzuki, Ryuuichi Kabutoya, Yuuki Fukuda