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1. 发明授权

US5515222A Magnetic head core arrangement having medium facing surface sides formed of single-crystal ferrite 失效
标题翻译：具有由单晶铁素体形成的具有介质相对表面侧的磁头芯布置
公开(公告)号：US5515222A
公开(公告)日：1996-05-07
申请号：US235798
申请日：1994-04-29
申请人： Seiji Kumagai , Junichi Honda , Yoshitomo Ito , Masatoshi Hayakawa , Toru Matsunaga , Mineo Yorizumi , Yoshito Ikeda
发明人： Seiji Kumagai , Junichi Honda , Yoshitomo Ito , Masatoshi Hayakawa , Toru Matsunaga , Mineo Yorizumi , Yoshito Ikeda
IPC分类号： G11B5/127 , G11B5/133 , G11B5/23 , G11B5/187
CPC分类号： G11B5/133
摘要： In a magnetic head having a pair of magnetic cores defining a magnetic gap in-between, a side of each magnetic core facing a recording medium is formed of a single-crystal ferrite, with the remaining portions of each magnetic core being formed of poly-crystal ferrite. The surface of the magnetic core facing the recording medium and the abutment surface of the magnetic core are the {100} plane and the {100} plane of the single-crystal ferrite, respectively. The magnetic head has excellent abrasion resistance and electro-magnetic conversion characteristics.
摘要翻译：在具有在其间限定有磁隙的一对磁芯的磁头中，每个磁芯的与记录介质相对的一侧由单晶铁氧体形成，其中每个磁芯的其余部分由聚 - 晶体铁素体。面向记录介质的磁芯的表面和磁芯的邻接表面分别是单晶铁氧体的{100}面和{100}面。磁头具有优异的耐磨性和电磁转换特性。

2. 发明授权

US5867887A Manufacturing method for magnetic head 失效
标题翻译：磁头制造方法
公开(公告)号：US5867887A
公开(公告)日：1999-02-09
申请号：US745304
申请日：1996-11-12
申请人： Seiji Kumagai , Masatoshi Hayakawa , Yoshito Ikeda , Junichi Honda
发明人： Seiji Kumagai , Masatoshi Hayakawa , Yoshito Ikeda , Junichi Honda
IPC分类号： G11B5/127 , G11B5/133 , G11B5/187 , G11B5/193 , G11B5/23 , G11B5/42
CPC分类号： G11B5/1335 , G11B5/1878 , G11B5/193 , Y10T29/49034 , Y10T29/49057
摘要： A method of manufacturing a magnetic head by bonding a pair of magnetic cores to each other, wherein a residual stress in the magnetic cores upon bonding them together is controlled so that a permeability of the magnetic cores in the vicinity of a magnetic recording medium sliding surface of the magnetic cores may become maximum. Accordingly, the residual stress in the magnetic cores is controlled so that the permeability of the magnetic cores may surely become maximum after forming the magnetic head, thereby ensuring a superior reproduction efficiency of the magnetic head.
摘要翻译：通过将一对磁芯彼此结合来制造磁头的方法，其中磁芯在将它们结合在一起时的残余应力被控制，使得磁芯在磁记录介质滑动表面附近的磁导率的磁芯可能会变得最大。因此，控制磁芯中的残余应力，使得在形成磁头之后磁芯的磁导率可以确定地变得最大，从而确保磁头的优异的再现效率。

3. 发明授权

US06452892B1 Magnetic tunnel device, method of manufacture thereof, and magnetic head 有权
标题翻译：磁隧道装置，其制造方法和磁头
公开(公告)号：US06452892B1
公开(公告)日：2002-09-17
申请号：US09486140
申请日：2000-05-01
申请人： Seiji Kumagai , Junichi Honda , Yoshito Ikeda
发明人： Seiji Kumagai , Junichi Honda , Yoshito Ikeda
IPC分类号： G11B700
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , G11B5/3909 , G11B2005/3996 , G11C11/16 , H01F10/3254 , H01L43/08
摘要： First and second magnetic layers are laminated though a tunnel barrier layer, wherein a region is formed in which change in a magnetic resistance ratio with respect to change in a voltage applied in such a manner that the second magnetic layer has a lower potential as compared with the potential of the first magnetic layer is smaller than change in a magnetic resistance ratio with respect to change in a voltage applied in such a manner that the second magnetic layer has a higher potential as compared with the potential of the first magnetic layer. Voltage is applied to the magnetic tunnel device in such a manner that the potential of the second magnetic layer is lower than that of the first magnetic layer so that dependency of the magnetic resistance ratio on the voltage is reduced. Thus, a stable tunnel current flows.
摘要翻译：第一和第二磁性层通过隧道势垒层层叠，其中形成一个区域，其中以相对于第二磁性层具有较低电位的方式施加电压的变化的磁阻比的变化，与第一磁性层的电位相比，第一磁性层的电位相对于施加的电压的变化的磁阻比的变化小于第二磁性层具有较高的电位。以使第二磁性层的电位低于第一磁性层的电位的方式将电压施加到磁隧道器件，使得磁阻比对电压的依赖性降低。因此，稳定的隧道电流流动。

4. 发明授权

US06535364B1 Magnetic resistance element having four magnetization states and a magnetic device using the same 有权
标题翻译：具有四个磁化状态的磁阻元件和使用其的磁性装置
公开(公告)号：US06535364B1
公开(公告)日：2003-03-18
申请号：US09482914
申请日：2000-01-14
申请人： Seiji Kumagai , Yoshito Ikeda , Terunobu Miyazaki , Yoshiyuki Fukumoto
发明人： Seiji Kumagai , Yoshito Ikeda , Terunobu Miyazaki , Yoshiyuki Fukumoto
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/06 , G11B5/3903 , G11B5/3909 , G11B2005/3996 , G11C11/5607 , G11C2211/5615 , H01F10/3254 , H01F10/3268
摘要： A magnetic resistance element is provided that includes an upper magnetic layer, which is formed in contact with an anti-ferromagnetic layer, and at least two magnetic layers that are layered with tunnel barrier wall layers respectively inserted between the first magnetic layer and each of the at least two magnetic layers such that the magnetic resistance element has a combined resistance that corresponds to one of four predefined magnetic resistances and that can be changed to another of the four predefined magnetic resistances by applying a predefined recording magnetic field pattern to the magnetic resistance element.
摘要翻译：提供了一种磁阻元件，其包括形成为与反铁磁层接触的上磁性层，以及分别插入在第一磁性层和第一磁性层之间的隧道阻挡壁层的至少两个磁性层至少两个磁性层，使得磁阻元件具有对应于四个预定义的磁阻之一的组合电阻，并且可以通过将预定义的记录磁场图案施加到磁阻元件上而改变为四个预定义的磁阻中的另一个。

5. 发明授权

US4953050A Magnetic head with Ru containing soft magnetic alloy in gap 失效
标题翻译：磁头与含有软磁合金的Ru间隙
公开(公告)号：US4953050A
公开(公告)日：1990-08-28
申请号：US464678
申请日：1990-01-10
申请人： Tatsuo Kumura , Heikichi Sato , Yoshiyuki Kunito , Yoshito Ikeda , Etsuo Izu , Masatoshi Hayakawa
发明人： Tatsuo Kumura , Heikichi Sato , Yoshiyuki Kunito , Yoshito Ikeda , Etsuo Izu , Masatoshi Hayakawa
IPC分类号： G11B5/235 , G11B5/127 , G11B5/187 , G11B5/23 , H01F10/14
CPC分类号： G11B5/187
摘要： A magnetic head is disclosed which is formed by magnetic core halves constituted of an oxide magnetic material and soft magnetic thin films, wherein the boundary surfaces between the thin films and the oxide magnetic material runs substantially parallel to the gap surface in the vicinity of the magnetic gap. The soft magnetic thin films are soft magnetic thin films of the Fe-Ga-Si system consisting essentially of Fe, Ga and Si.
摘要翻译：公开了一种由氧化物磁性材料和软磁性薄膜构成的磁芯半部形成的磁头，其中薄膜和氧化物磁性材料之间的边界面基本上平行于磁性附近的间隙表面间隙。软磁薄膜是由Fe，Ga和Si组成的Fe-Ga-Si系统的软磁薄膜。

6. 发明授权

US06312840B1 Magnetic tunneling element and manufacturing method therefor 失效
标题翻译：磁性隧道元件及其制造方法
公开(公告)号：US06312840B1
公开(公告)日：2001-11-06
申请号：US09397069
申请日：1999-09-16
申请人： Seiji Kumagai , Eiji Nakashio , Junichi Sugawara , Yoshito Ikeda
发明人： Seiji Kumagai , Eiji Nakashio , Junichi Sugawara , Yoshito Ikeda
IPC分类号： B32B1900
CPC分类号： B82Y25/00 , B82Y10/00 , B82Y40/00 , G01R33/093 , G01R33/098 , G11B5/332 , G11B5/3903 , G11B2005/3996 , H01F10/3254 , H01F41/307 , H01L43/08 , Y10S428/90 , Y10T428/1114 , Y10T428/1193
摘要： A magnetic tunnelling element in which the tunnel current flows reliably in an insulating layer to exhibit a stable magnetic tunnelling effect. To this end, the magnetic tunnelling element at least includes a first magnetic layer, a tunnel barrier layer formed on the first magnetic layer and a second magnetic layer formed on the tunnel barrier layer. The tunnel current flows via the tunnel barrier layer between the first magnetic metal layer and the second magnetic metal layer. The surface of the first magnetic layer carrying the tunnel barrier layer has a surface roughness (Ra) of 0.3 nm or less.
摘要翻译：一种磁隧道元件，其中隧道电流在绝缘层中可靠地流动以呈现稳定的磁隧道效应。为此，磁隧道元件至少包括第一磁性层，形成在第一磁性层上的隧道势垒层和形成在隧道势垒层上的第二磁性层。隧道电流通过第一磁性金属层和第二磁性金属层之间的隧道势垒层流动。携带隧道势垒层的第一磁性层的表面的表面粗糙度（Ra）为0.3nm以下。

7. 发明授权

US06519123B1 Method to manufacture magnetic tunneling elements using inductively coupled plasma 有权
标题翻译：使用电感耦合等离子体制造磁性隧道元件的方法
公开(公告)号：US06519123B1
公开(公告)日：2003-02-11
申请号：US09392554
申请日：1999-09-09
申请人： Junichi Sugawara , Eiji Nakashio , Seiji Kumagai , Yoshito Ikeda
发明人： Junichi Sugawara , Eiji Nakashio , Seiji Kumagai , Yoshito Ikeda
IPC分类号： G11B5139
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/06 , G11B5/3163 , G11B5/33 , G11B5/332 , G11B5/3903 , G11B2005/3996 , H01L43/08
摘要： A magnetic tunneling element in which the tunnel current flows reliably to exhibit a stable magnetic tunneling effect. The magnetic tunneling element includes a first magnetic layer, a tunnel barrier layer formed on the first magnetic layer, and a second magnetic layer formed on the tunnel barrier layer. The tunnel barrier layer is a metal film oxidized by inductively coupled oxygen plasma and a second magnetic layer is formed on the tunnel barrier layer.
摘要翻译：隧道电流可靠地流动以表现出稳定的磁隧道效应的磁隧道元件。磁隧道元件包括第一磁性层，形成在第一磁性层上的隧道势垒层和形成在隧道势垒层上的第二磁性层。隧道势垒层是通过电感耦合氧等离子体氧化的金属膜，在隧道势垒层上形成第二磁性层。

8. 发明授权

US06365948B1 Magnetic tunneling junction device 失效
标题翻译：磁隧道连接装置
公开(公告)号：US06365948B1
公开(公告)日：2002-04-02
申请号：US08824716
申请日：1997-03-26
申请人： Seiji Kumagai , Toshihiko Yaoi , Yoshito Ikeda
发明人： Seiji Kumagai , Toshihiko Yaoi , Yoshito Ikeda
IPC分类号： H01L2982
CPC分类号： H01L43/08
摘要： A magnetic tunneling effect device capable of displaying a so-called magnetic tunneling effect in stability, more specifically, a magnetic tunneling junction device in which a first magnetic metal layer and a second magnetic metal layer are connected together by ferromagnetic tunnel junction via an insulating layer and in which the conductance of the tunnel current is changed by the relative angle of magnetization of these magnetic metal layers. The ferromagnetic tunnel junction has a junction area of not larger than 1 10−9 m2. For reliably controlling the junction area of the ferromagnetic tunnel junction, the insulating layer is formed by a first insulating layer for ferromagnetic tunnel junction and a second insulating layer formed on the first insulating layer for controlling the junction area of the ferromagnetic tunnel junction.
摘要翻译：一种能够稳定地显示所谓的磁隧道效应的磁隧道效应装置，更具体地说，是一种磁性隧道接合装置，其中第一磁性金属层和第二磁性金属层通过铁磁隧道结通过绝缘层连接在一起并且其中隧道电流的电导被这些磁性金属层的相对磁化角改变。铁磁隧道结的接合面积不大于1 10-9平方米。为了可靠地控制铁磁隧道结的接合面，绝缘层由用于铁磁隧道结的第一绝缘层和形成在第一绝缘层上的第二绝缘层形成，用于控制铁磁隧道结的结面积。

9. 发明授权

US09252488B2 Antenna apparatus and communication apparatus 有权
标题翻译：天线装置和通信装置
公开(公告)号：US09252488B2
公开(公告)日：2016-02-02
申请号：US14008216
申请日：2012-03-23
申请人： Katsuhisa Orihara , Yoshito Ikeda , Norio Saito , Satoru Sugita
发明人： Katsuhisa Orihara , Yoshito Ikeda , Norio Saito , Satoru Sugita
IPC分类号： H01Q7/06 , H01Q1/24 , H01Q1/22 , G06K7/10
CPC分类号： H01Q7/06 , G06K7/10237 , H01Q1/2208 , H01Q1/243
摘要： The present invention provides an antenna apparatus which can realize favorable communication properties while achieving downsizing of a casing of an electronic device when incorporated in an electronic device. An antenna module (1a) which is incorporated in a mobile phone (130) and which is enabled to perform communication by receiving a magnetic field transmitted from a reader/writer (120) comprises an antenna coil (11a) which is wound in a clearance (132) between an end portion (133b) of a metallic plate (133a) opposing the reader/writer (120) within a casing (131) of the mobile phone (130) and an inner peripheral wall (131a) of the casing (131) so as not to surround an outer peripheral portion of the metallic plate (133a) and which is inductively coupled with the reader/writer (120).
摘要翻译：本发明提供了一种天线装置，其能够实现良好的通信性能，同时在电子装置中结合时实现电子装置的壳体的小型化。通过接收从读写器（120）发送的磁场，能够进行通信的天线模块（1a）包括：天线线圈（11a），其被卷绕在间隙（130）的壳体（131）内的与读写器（120）相对的金属板（133a）的端部（133b）与壳体的内周壁（131a） 131），以便不围绕金属板（133a）的外周部分并且与读取器/写入器（120）感应耦合。

10. 发明授权

US08849195B2 Antenna device and communication device 有权
标题翻译：天线设备和通信设备
公开(公告)号：US08849195B2
公开(公告)日：2014-09-30
申请号：US13635997
申请日：2011-03-31
申请人： Katsuhisa Orihara , Yoshito Ikeda , Norio Saito , Satoru Sugita
发明人： Katsuhisa Orihara , Yoshito Ikeda , Norio Saito , Satoru Sugita
IPC分类号： H04B5/00 , H01Q1/22 , H01Q7/00 , H01Q1/24
CPC分类号： H01Q1/2208 , H01Q1/2225 , H01Q1/2266 , H01Q1/24 , H01Q1/243 , H01Q1/42 , H01Q7/00
摘要： The present invention provides a communication device that can reduce a housing of an electronic device in size and thickness when the communication device is built in the electronic device. The communication device includes: an antenna coil (11a) arranged on an outer peripheral portion (134) of a housing (131) surface facing a reader/writer (120) of a mobile phone (130); a magnetic sheet (13) that attracts a magnetic field transmitted from the reader/writer (120) to the antenna coil (11a); and a communication processing unit (12) that is driven by a current flowing in the antenna coil (11a) and performs communication with the reader/writer (120), wherein the magnetic sheet (13) is arranged on the reader/writer (120) side of the antenna coil (11a) at a center portion (132a), and the antenna coil (11a) is arranged on the reader/writer (120) side on an outer periphery (130d) side.
摘要翻译：本发明提供一种通信装置，当通信装置内置在电子装置中时，可以减小电子装置的尺寸和厚度的外壳。通信装置包括：天线线圈（11a），布置在面向移动电话（130）的读取器/写入器（120）的壳体（131）表面的外周部分（134）上; 吸引从读取器/写入器（120）发送到天线线圈（11a）的磁场的磁性片（13）; 以及由在天线线圈（11a）中流动的电流驱动并与读取器/写入器（120）进行通信的通信处理单元（12），其中磁片（13）布置在读取器/写入器（120））侧，天线线圈（11a）在中心部分（132a）处，天线线圈（11a）布置在外周（130d）侧的读/写器（120）侧。

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