Patents by Inventor Masayuki Gonda
Masayuki Gonda 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: 8253643Abstract: A chip antenna comprising a magnetic substrate comprising Z-type ferrite or Y-type ferrite as a main phase and having a through-hole extending linearly along a center axis, and a conductor penetrating the through-hole, the magnetic phase having a c-axis substantially parallel or perpendicular to the through-hole.Type: GrantFiled: June 9, 2008Date of Patent: August 28, 2012Assignee: Hitachi Metals Ltd.Inventors: Tomotsugu Kato, Masayuki Gonda, Hiroyuki Aoyama, Hideto Mikami
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Patent number: 8154464Abstract: A magnetic material antenna using a ferrite sintered body comprising one or more conductors disposed at least on a surface or in internal portion of the ferrite sintered body, wherein the ferrite sintered body is a sintered body of Y-type ferrite containing BaO, CoO, and Fe2O3 as main components and wherein the ferrite sintered body contains Cu and, in a cross section for the sintered body, an area rate of a cubic Co-rich phase, which has a ration of an amount of Co being higher than a Y-type ferrite phase being a mother phase, is 1% or less.Type: GrantFiled: June 21, 2007Date of Patent: April 10, 2012Assignee: Hitachi Metals, Ltd.Inventors: Masayuki Gonda, Shigeo Fujii, Hiroyuki Aoyama
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Patent number: 7821468Abstract: The linear conductor 2 penetrates the magnetic base 1 along with the longitudinal direction of the magnetic base 1. The linear conductor 2 has a straight shape. The straight shape conductor 2 is installed so that it is surrounded by outside planes of the magnetic base 1, such as the side of a rectangular parallelepiped or a cylindrical peripheral face, and it penetrates both end sides of the magnetic base 1 in the longitudinal direction.Type: GrantFiled: March 23, 2007Date of Patent: October 26, 2010Assignee: Hitachi Metals, Ltd.Inventors: Hiroyuki Aoyama, Masayuki Gonda, Sigeo Fujii, Shuuichi Takano
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Publication number: 20100156733Abstract: A chip antenna comprising a magnetic substrate comprising Z-type ferrite or Y-type ferrite as a main phase and having a through-hole extending linearly along a center axis, and a conductor penetrating the through-hole, the magnetic phase having a c-axis substantially parallel or perpendicular to the through-hole.Type: ApplicationFiled: June 9, 2008Publication date: June 24, 2010Applicant: HITACHI METALS, LTD.Inventors: Tomotsugu Kato, Masayuki Gonda, Hiroyuki Aoyama, Hideto Mikami
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Patent number: 7651626Abstract: There is provided Y-type hexagonal ferrite having a high density of sintered body and a low level of loss and an antenna. The hexagonal ferrite having Y-type ferrite as the main phase is characterized in that main components of the hexagonal ferrite are M1O (M1 stands for at least one of Ba and Sr), M2O (M2 stands for at least one of Co, Ni, Cu, Zn and Mn) and Fe2O3, and the loss factor and the density of sintered body are 0.15 or lower and 4.6×103 kg/m3 or higher, respectively. The hexagonal ferrite is used to configure an antenna and a communication apparatus.Type: GrantFiled: December 14, 2006Date of Patent: January 26, 2010Assignee: Hitachi Metals, Ltd.Inventors: Masayuki Gonda, Hiroyuki Aoyama
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Publication number: 20090273534Abstract: A magnetic material antenna using a ferrite sintered body comprising one or more conductors disposed at least on a surface or in internal portion of the ferrite sintered body, wherein the ferrite sintered body is a sintered body of Y-type ferrite containing BaO, CoO, and Fe2O3 as main components and wherein the ferrite sintered body contains Cu and, in a cross section for the sintered body, an area rate of a cubic Co-rich phase, which has a ration of an amount of Co being higher than a Y-type ferrite phase being a mother phase, is 1% or less.Type: ApplicationFiled: June 21, 2007Publication date: November 5, 2009Inventors: Masayuki Gonda, Shigeo Fujii, Hiroyuki Aoyama
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Publication number: 20080316111Abstract: An antenna is provided which includes a first antenna element having at least one base and a conductor penetrating through the base and a second antenna element having a conductor portion having a shape of a plate or a line and a connecting conductor, wherein a first end of the conductor of the first antenna element is connected to the connecting conductor of the second antenna element, and the connecting conductor of the second antenna element is connected to a partway on the conductor portion of the second antenna element.Type: ApplicationFiled: May 27, 2008Publication date: December 25, 2008Applicant: HITACHI METALS, LTD.Inventors: Hiroyuki Aoyama, Masayuki Gonda
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Publication number: 20080036671Abstract: There is provided Y-type hexagonal ferrite having a high density of sintered body and a low level of loss and an antenna. The hexagonal ferrite having Y-type ferrite as the main phase is characterized in that main components of the hexagonal ferrite are M1O (M1 stands for at least one of Ba and Sr), M2O (M2 stands for at least one of Co, Ni, Cu, Zn and Mn) and Fe2O3, and the loss factor and the density of sintered body are 0.15 or lower and 4.6×103 kg/m3 or higher, respectively. The hexagonal ferrite is used to configure an antenna and a communication apparatus.Type: ApplicationFiled: March 2, 2005Publication date: February 14, 2008Inventors: Masayuki Gonda, Hiroyuki Aoyama
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Publication number: 20070222689Abstract: The linear conductor 2 penetrates the magnetic base 1 along with the longitudinal direction of the magnetic base 1. The linear conductor 2 has a straight shape. The straight shape conductor 2 is installed so that it is surrounded by outside planes of the magnetic base 1, such as the side of a rectangular parallelepiped or a cylindrical peripheral face, and it penetrates both end sides of the magnetic base 1 in the longitudinal direction.Type: ApplicationFiled: March 23, 2007Publication date: September 27, 2007Applicant: Hitachi Metals, Ltd.Inventors: Hiroyuki Aoyama, Masayuki Gonda, Sigeo Fujii, Shuuichi Takano
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Patent number: 6333103Abstract: An aluminum oxde-coated article has a first coating layer and a second coating layer formed in this order on a substrate, the first coating layer having a single- or multi-layer structure and being made of at least one selected from the group consisting of carbides, nitrides, carbonitrides, oxides, oxycarbides, oxynitrides and oxycarbonitrides of metals in Groups IVa, Va and VIa of the Periodic Table, and the second coating layer being constituted by at least one &agr;-aluminum oxide-based oxide layer, which has an equivalent X-ray diffraction peak ratio PR (1 0 10) of 1.3 or more in a (1 0 10) plane.Type: GrantFiled: November 5, 1999Date of Patent: December 25, 2001Assignees: Hitachi Metals, Ltd., Hitachi Tools Engineering, Ltd.Inventors: Toshio Ishii, Masayuki Gonda, Hiroshi Ueda, Shirou Okayama, Nobuhiko Shima
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Patent number: 6156383Abstract: An alumina coated tool comprising a plurality of refractory layers and a substrate body. The refractory layers comprise a non-oxide layer on the surface of the substrate body, a bonding layer having a face-centered-cubic structure on the non-oxide layer, and an oxide layer on the bonding layer. The non-oxide layer is at least one of carbide, nitride and carbonitride of a metal selected from the group consisting of the Groups IVa, Va and VIa of the Periodic Table. The bonding layer is a single- or multi-coating of oxide, oxycarbide, oxynitride, oxycarbonitride of a metal selected from the group consisting of the Groups IVa, Va and VIa of the Periodic Table. The oxide layer is substantially .alpha.-Al.sub.2 O.sub.3. The epitaxial relationship between the non-oxide layer and the bonding layer enhances the bonding strength of the oxide layer to provide an alumina coated tool resistant to flaking of the oxide layer.Type: GrantFiled: August 20, 1999Date of Patent: December 5, 2000Assignee: Hitachi Metals, Ltd.Inventors: Toshio Ishii, Masayuki Gonda, Hiroshi Ueda, Tsunehiro Kawata
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Patent number: 5972495Abstract: An alumina coated tool comprising a plurality of refractory layers and a substrate body. The refractory layers comprise a non-oxide layer on the surface of the substrate body, a bonding layer having a face-centered-cubic structure on the non-oxide layer, and an oxide layer on the bonding layer. The non-oxide layer is at least one of carbide, nitride and carbonitride of a metal selected from the group consisting of the Groups IVa, Va and VIa of the Periodic Table. The bonding layer is a single- or multi-coating of oxide, oxycarbide, oxynitride, oxycarbonitride of a metal selected from the group consisting of the Groups IVa, Va and VIa of the Periodic Table. The oxide layer is substantially .alpha.-Al.sub.2 O.sub.3. The epitaxial relationship between the non-oxide layer and the bonding layer enhances the bonding strength of the oxide layer to provide an alumina coated tool resistant to flaking of the oxide layer.Type: GrantFiled: July 2, 1997Date of Patent: October 26, 1999Assignee: Hitachi Metals, Ltd.Inventors: Toshio Ishii, Masayuki Gonda, Hiroshi Ueda, Tsunehiro Kawata
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Patent number: 5348806Abstract: A cermet alloy having a structure comprising a hard phase and a bonding phase, said hard phase comprising (1) at least one of MC, MN, and MCN, wherein M is at least one element selected from Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, and W (2) at least one compound selected from (M,Mo)(B,C), M,Mo)(B,N) and (M,Mo)(B,CN) and (3) at least one Mo--Co--B compound; said bonding phase comprising Co. The cermet alloy has superior toughness and hardness, and can be worked by conventional sintering methods. The invention also includes a method for producing the cermet alloy.Type: GrantFiled: September 18, 1992Date of Patent: September 20, 1994Assignee: Hitachi Metals, Ltd.Inventors: Katsuhiko Kojo, Akibumi Negishi, Masayuki Gonda