Patents by Inventor Yoshikazu Okino
Yoshikazu Okino 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: 9685267Abstract: A coil component is of the type where a helical coil is directly contacting a magnetic body where such coil component still meets the demand for electrical current amplification. The coil component is structured in such a way that a helical coil is covered with a magnetic body. The magnetic body is mainly constituted by magnetic alloy grains and contains substantially no glass component, and each of the magnetic alloy grains has an oxide film of the grain on its surface.Type: GrantFiled: April 18, 2016Date of Patent: June 20, 2017Assignee: TAIYO YUDEN CO., LTD.Inventors: Hitoshi Matsuura, Tomomi Kobayashi, Yoshikazu Okino, Hidemi Iwao, Kenichiro Nogi, Kenji Otake
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Publication number: 20160233019Abstract: A coil component is of the type where a helical coil is directly contacting a magnetic body where such coil component still meets the demand for electrical current amplification. The coil component is structured in such a way that a helical coil is covered with a magnetic body. The magnetic body is mainly constituted by magnetic alloy grains and contains substantially no glass component, and each of the magnetic alloy grains has an oxide film of the grain on its surface.Type: ApplicationFiled: April 18, 2016Publication date: August 11, 2016Inventors: Hitoshi MATSUURA, Tomomi KOBAYASHI, Yoshikazu OKINO, Hidemi IWAO, Kenichiro NOGI, Kenji OTAKE
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Patent number: 9349517Abstract: A coil component is of the type where a helical coil is directly contacting a magnetic body where such coil component still meets the demand for electrical current amplification. The coil component is structured in such a way that a helical coil is covered with a magnetic body. The magnetic body is mainly constituted by magnetic alloy grains and does not contain glass component, and each of the magnetic alloy grains has an oxide film of the grain on its surface.Type: GrantFiled: December 7, 2011Date of Patent: May 24, 2016Assignee: TAIYO YUDEN CO., LTD.Inventors: Hitoshi Matsuura, Tomomi Kobayashi, Yoshikazu Okino, Hidemi Iwao, Kenichiro Nogi, Kenji Otake
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Patent number: 8362866Abstract: A coil component is of the type where a helical coil is directly contacting a magnetic body, which is still capable of meeting the demand for electrical current amplification. A coil component, comprising a magnetic body mainly constituted by magnetic alloy grains, and a coil formed on the magnetic body; wherein an oxide film of the magnetic alloy grains is present on the surface of each of the magnetic alloy grains, and based on grain size by volume standard, the magnetic alloy grains have a d50 in a range of 3.0 to 20.0 ?m, d10/d50 in a range of 0.1 to 0.7, and d90/d50 in a range of 1.4 to 5.0.Type: GrantFiled: January 16, 2012Date of Patent: January 29, 2013Assignee: Taiyo Yuden Co., Ltd.Inventors: Hitoshi Matsuura, Tomomi Kobayashi, Yoshikazu Okino, Hidemi Iwao, Kenichiro Nogi, Kenji Otake
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Publication number: 20120188049Abstract: A coil component is of the type where a helical coil is directly contacting a magnetic body, which is still capable of meeting the demand for electrical current amplification. A coil component, comprising a magnetic body mainly constituted by magnetic alloy grains, and a coil formed on the magnetic body; wherein an oxide film of the magnetic alloy grains is present on the surface of each of the magnetic alloy grains, and based on grain size by volume standard, the magnetic alloy grains have a d50 in a range of 3.0 to 20.0 ?m, d10/d50 in a range of 0.1 to 0.7, and d90/d50 in a range of 1.4 to 5.0.Type: ApplicationFiled: January 16, 2012Publication date: July 26, 2012Applicant: TAIYO YUDEN CO., LTD.Inventors: Hitoshi MATSUURA, Tomomi KOBAYASHI, Yoshikazu OKINO, Hidemi IWAO, Kenichiro NOGI, Kenji OTAKE
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Publication number: 20120188046Abstract: A coil component is of the type where a helical coil is directly contacting a magnetic body where such coil component still meets the demand for electrical current amplification. The coil component is structured in such a way that a helical coil is covered with a magnetic body. The magnetic body is mainly constituted by magnetic alloy grains and does not contain glass component, and each of the magnetic alloy grains has an oxide film of the grain on its surface.Type: ApplicationFiled: December 7, 2011Publication date: July 26, 2012Applicant: TAIYO YUDEN CO., LTD.Inventors: Hitoshi MATSUURA, Tomomi KOBAYASHI, Yoshikazu OKINO, Hidemi IWAO, Kenichiro NOGI, Kenji OTAKE
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Publication number: 20110095856Abstract: A multi layer inductor using an Ni—Zn—Cu ferrite, which has an improved temperature characteristic and is free from structural defects, is provided, and a method for manufacturing the multi layer inductor is also provided. The multi layer inductor is characterized by including a laminate 1 having a rectangular parallelepiped shape, which is provided with a plurality of magnetic layers 3,3 composed of an Ni—Zn—Cu ferrite, a plurality of conductor layers 2,2 forming a coil upon being laminated via the magnetic layers and at least one non-magnetic layer 4 formed so as to come into contact with the plurality of magnetic layers 3,3 and composed of a Ti—Ni—Cu—Mn—Zr-based dielectric substance; and at least a pair of external electrodes 7,7 provided on the ends of the laminate 1 and conductively connected to the ends of the coil.Type: ApplicationFiled: May 7, 2009Publication date: April 28, 2011Inventors: Takashi Nakajima, Kenji Okabe, Kenitirou Nogi, Yoshiaki Kamiyama, Tomomi Kobayashi, Yoshikazu Okino
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Patent number: 7786834Abstract: An inductor 10 has a magnetic body 11 of a rectangular solid shape and a coil 12 embedded in the magnetic body 11. The coil 12 integrally has a part constituted by a helically wound coil wire, two leader parts 12a provided at the two ends of the wound part, and terminal parts 13 connected to the ends of the leader parts and wider than the leader parts 12a, where the boundary between each leader part 12a and each terminal part 13 is positioned in the magnetic body 11, and the end of each terminal part 13 is exposed from the corresponding side face of the magnetic body 11 and folded in an L shape along the side face and bottom face.Type: GrantFiled: November 13, 2008Date of Patent: August 31, 2010Assignee: Taiyo Yuden Co., Ltd.Inventors: Toshiyuki Yagasaki, Tomoo Kashiwa, Hideki Ogawa, Kouichirou Wada, Yoshikazu Okino, Sholchi Tosaka
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Publication number: 20090128275Abstract: An inductor 10 has a magnetic body 11 of a rectangular solid shape and a coil 12 embedded in the magnetic body 11. The coil 12 integrally has a part constituted by a helically wound coil wire, two leader parts 12a provided at the two ends of the wound part, and terminal parts 13 connected to the ends of the leader parts and wider than the leader parts 12a, where the boundary between each leader part 12a and each terminal part 13 is positioned in the magnetic body 11, and the end of each terminal part 13 is exposed from the corresponding side face of the magnetic body 11 and folded in an L shape along the side face and bottom face.Type: ApplicationFiled: November 13, 2008Publication date: May 21, 2009Applicant: TAIYO YUDEN CO. LTD.Inventors: Toshiyuki Yagasaki, Tomoo Kashiwa, Hideki Ogawa, Kouichirou Wada, Yoshikazu Okino, Shoichi Tosaka
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Patent number: 7495538Abstract: An inductor comprises a drum core which comprises a sintered magnetic material and has a winding axis and a pair of collars in a plate shape provided on both ends of the winding axis. The inductor further comprises a coil conductor wound on the winding axis of the drum core, the coil conductor is covered on an outer periphery thereof with a composite magnetic material in a sheet form containing a resin and magnetic powder, and the composite magnetic material in a sheet form is adhered to the outer periphery of the coil conductor except at least for inner surfaces of the pair of collars of the drum core facing each other.Type: GrantFiled: August 22, 2007Date of Patent: February 24, 2009Assignee: Taiyo Yuden Co., Ltd.Inventors: Masayoshi Tsunemi, Hideki Ogawa, Hidenori Aoki, Hideki Okada, Yoshikazu Okino
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Publication number: 20080055034Abstract: An inductor comprises a drum core which comprises a sintered magnetic material and has a winding axis and a pair of collars in a plate shape provided on both ends of the winding axis. The inductor further comprises a coil conductor wound on the winding axis of the drum core, the coil conductor is covered on an outer periphery thereof with a composite magnetic material in a sheet form containing a resin and magnetic powder, and the composite magnetic material in a sheet form is adhered to the outer periphery of the coil conductor except at least for inner surfaces of the pair of collars of the drum core facing each other.Type: ApplicationFiled: August 22, 2007Publication date: March 6, 2008Applicant: Taiyo Yuden Co., Ltd.Inventors: Masayoshi Tsunemi, Hideki Ogawa, Hidenori Aoki, Hideki Okada, Yoshikazu Okino
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Patent number: 6656865Abstract: A ceramic capacitor containing at least one dielectric layer formed from a dielectric ceramic composition comprising a sintered body containing ceramic particles having a core/shell structure in an amount of 15% or more based on the total ceramic particles of the sintered body, the core/shell structured particle being composed of a core portion, which is BaTiO3 crystal, and a shell portion surrounding the core portion, which is made of a solid solution comprising BaTiO3 as a major component, has excellent temperature characteristics and a long life-time.Type: GrantFiled: June 29, 2001Date of Patent: December 2, 2003Assignee: Taiyo Yuden Co., Ltd.Inventors: Kenji Saito, Koichiro Morita, Youichi Mizuno, Yasunobu Kawamoto, Yoshikazu Okino, Noriyuki Kohzu, Hirokazu Chazono
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Patent number: 6437969Abstract: Dielectric ceramic includes dielectric ceramic grains having BaTiO3 as a major component thereof, a portion of the dielectric ceramic grains having a ferroelectric core and a paraelectric shell into which Mg and a rare earth element are diffused. The shell being located at least on a part of a surface of the core, wherein the shell includes at least two shell portions having different components diffused thereinto. The shell portions can be radially disposed on one another or be in direct contact with the surface of the core.Type: GrantFiled: February 23, 2001Date of Patent: August 20, 2002Assignee: Taiyo Yuden Co. Ltd.Inventors: Youichi Mizuno, Yoshikazu Okino, Kenji Saito, Noriyuki Kohzu
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Publication number: 20020016249Abstract: A ceramic capacitor containing at least one dielectric layer formed from a dielectric ceramic composition comprising a sintered body containing ceramic particles having a core/shell structure in an amount of 15% or more based on the total ceramic particles of the sintered body, the core/shell structured particle being composed of a core portion, which is BaTiO3 crystal, and a shell portion surrounding the core portion, which is made of a solid solution comprising BaTiO3 as a major component, has excellent temperature characteristics and a long life-time.Type: ApplicationFiled: June 29, 2001Publication date: February 7, 2002Inventors: Kenji Saito, Koichiro Morita, Youichi Mizuno, Yasunobu Kawamoto, Yoshikazu Okino, Noriyuki Kohzu, Hirokazu Chazono
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Publication number: 20010021095Abstract: Dielectric ceramic includes dielectric ceramic grains having BaTiO3 as a major component thereof, a portion of the dielectric ceramic grains having a ferroelectric core and a paraelectric shell into which Mg and a rare earth element are diffused. The shell being located at least on a part of a surface of the core, wherein the shell includes at least two shell portions having different components diffused thereinto. The shell portions can be radially disposed on one another or be in direct contact with the surface of the core.Type: ApplicationFiled: February 23, 2001Publication date: September 13, 2001Applicant: Taiyo Yuden Co. Ltd.Inventors: Youichi Mizuno, Yoshikazu Okino, Kenji Saito, Noriyuki Kohzu
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Patent number: 6205014Abstract: The multilayer ceramic capacitor has a plurality of dielectric layers and inner layers laminated alternately laminated on one another. In each of the dielectric layers, the rate of ceramic grain which form the dielectric layers and present singly in one dielectric layer over its entire longitudinal thickness is set to amount to 20% or more. The multilayer ceramic capacitor can prevent a decrease in a CR product to a value lower than a desired level even if the dielectric layer becomes as thin as 5 &mgr;m or less. This can comply with demands for a multilayer ceramic capacitor that the number of the dielectric layers to be laminated on the inner electrodes should be increased yet the thickness of the dielectric layers should be made thinner in order to meet requirements for making electronic circuit more compact in size and higher in density.Type: GrantFiled: April 19, 1999Date of Patent: March 20, 2001Assignee: Taiyo Yudan Co., Ltd.Inventors: Yasuyuki Inomata, Yoshikazu Okino