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11. 发明授权

US07018485B2 Apparatus for subjecting rare earth alloy to hydrogenation process and method for producing rare earth sintered magnet using the apparatus 有权
标题翻译：稀土类合金的氢化处理装置及使用该装置的稀土类烧结磁体的制造方法
公开(公告)号：US07018485B2
公开(公告)日：2006-03-28
申请号：US10381006
申请日：2002-06-25
申请人： Akihito Tsujimoto , Katsumi Okayama , Shinji Kidowaki , Tadayoshi Muneto
发明人： Akihito Tsujimoto , Katsumi Okayama , Shinji Kidowaki , Tadayoshi Muneto
IPC分类号： H01F1/057
CPC分类号： B22F9/023 , C21D1/74 , H01F1/0553 , H01F1/0557 , H01F1/0573 , H01F1/0577 , H01F1/086
摘要： An apparatus for subjecting a rare earth alloy block to a hydrogenation process includes a casing, gas inlet and outlet ports, a member arranged to produce a gaseous flow, and a windbreak plate. The casing defines an inner space for receiving a container. The container includes an upper opening and stores the rare earth alloy block therein. A hydrogen gas and an inert gas are introduced into the inner space through the gas inlet port, and are exhausted from the inner space through the gas outlet port. The gaseous flow is produced by a fan, for example, in the inner space. The windbreak plate is disposed upstream with respect to the gaseous flow that has been produced inside the inner space. Also, the windbreak plate reduces a flow rate of the gaseous flow that has been produced near the upper opening of the container.
摘要翻译：用于对稀土合金块进行氢化处理的装置包括壳体，气体入口和出口，布置成产生气流的构件和防风板。壳体限定用于容纳容器的内部空间。该容器包括上部开口并将稀土合金块存储在其中。通过气体入口将氢气和惰性气体引入内部空间，并通过气体出口从内部空间排出。气流由风扇产生，例如在内部空间中。防风板相对于在内部空间内产生的气流设置在上游。此外，防风板减少了在容器的上部开口附近产生的气流的流量。

12. 发明申请

US20050207263A1 Magnetic non-volatile memory element 有权
标题翻译：磁性非易失性存储元件
公开(公告)号：US20050207263A1
公开(公告)日：2005-09-22
申请号：US10519895
申请日：2003-07-02
申请人： Katsumi Okayama , Kaoru Kobayashi , Makoto Motoyoshi
发明人： Katsumi Okayama , Kaoru Kobayashi , Makoto Motoyoshi
IPC分类号： G11C11/15 , G11C8/02 , G11C11/16 , H01L21/76 , H01L21/8246 , H01L27/105 , H01L27/22 , H01L43/02 , H01L43/08
CPC分类号： G11C11/16 , H01L27/228 , Y10S977/935
摘要： A non-volatile magnetic memory device is proposed, which provides sufficient magnetic shielding performance for external magnetic fields. A first magnetic shield layer 60a and a second magnetic shield layer 60b, both made of a soft magnetic metal, are formed respectively on the bottom surface of the transistor section 20, which is the mounting side of the MRAM device 10, and on the top surface of the bit line 50, which is opposite to the bottom surface of the mounting side of the MRAM device 10. On the second magnetic shield layer 60a, a passivation film 70 is formed. The magnetic flux penetrated from the external magnetic field, is suppressed below the inversion strength of the MRAM device 10, thereby improving reliability. Moreover, by using soft magnetic metal as the magnetic shield layers 60a, 60b, the magnetic shield layers can be formed by the sputtering technique, particularly composing elements can be partly shared as elements of the targets to be used for forming various layers composing the MRAM device 10 by the sputtering technique, thereby enabling to form various layers of the MRAM device 10 in a single sputtering chamber efficiently.
摘要翻译：提出了一种非易失性磁存储器件，为外部磁场提供了足够的磁屏蔽性能。分别在作为MRAM器件10的安装侧的晶体管部分20的底表面上分别形成由软磁性金属制成的第一磁屏蔽层60a和第二磁屏蔽层60b，并且在位线50的与MRAM装置10的安装侧的底面相反的顶面。在第二磁屏蔽层60a上形成钝化膜70。从外部磁场穿透的磁通被抑制在MRAM装置10的反转强度以下，从而提高可靠性。此外，通过使用软磁性金属作为磁屏蔽层60a，60b，可以通过溅射技术形成磁屏蔽层，特别地，组成元件可以部分地作为用于形成构成各种层的靶的元素 MRAM器件10通过溅射技术，从而能够有效地在单个溅射室中形成MRAM器件10的各个层。

13. 发明授权

US06474576B1 Milling apparatus and milling method 有权
公开(公告)号：US06474576B1
公开(公告)日：2002-11-05
申请号：US09522472
申请日：2000-03-09
申请人： Akiyasu Oota , Akihito Tsujimoto , Katsumi Okayama
发明人： Akiyasu Oota , Akihito Tsujimoto , Katsumi Okayama
IPC分类号： B02C1912
CPC分类号： B02C19/06 , B02C23/16 , B02C25/00
摘要： A milling apparatus comprises a mill for milling of an object material such as a rare-earth alloy. The mill includes a mill main body. A classifying rotor for classification of a powder is provided inside and at an upper portion of the mill main body. The mill main body has an outer circumference provided with three leg portions spaced equally from each other. Each of the leg portions supports the mill main body at a position above the center of gravity of the mill. Each of the leg portions is provided with a weight detector for detection of a weight of the mill holding the object material remaining in the mill. A flexible pipe is provided between the mill and a raw material feeder for supply of the object material to the mill. Another flexible pipe is provided between the mill and a collecting tank for collection of the powder. A controlling portion controls an amount of supply of the object material to the mill by a proportional-plus-integral-plus-derivative control based on a result of the detection by the weight detectors, for maintenance of a constant amount of the object material present in the mill.

14. 发明授权

US06403024B1 Hydrogen pulverizer for rare-earth alloy magnetic material powder using the pulverizer, and method for producing magnet using the pulverizer 有权
标题翻译：使用粉碎机的稀土合金磁性材料粉末的氢粉碎机和使用粉碎机的磁体制造方法
公开(公告)号：US06403024B1
公开(公告)日：2002-06-11
申请号：US09503738
申请日：2000-02-15
申请人： Akiyasu Oota , Akihito Tsujimoto , Katsumi Okayama
发明人： Akiyasu Oota , Akihito Tsujimoto , Katsumi Okayama
IPC分类号： B22F312
CPC分类号： H01F1/0573 , B22F9/023 , C22C1/0441
摘要： A hydrogen pulverizer according to the present invention is an apparatus for subjecting a rare-earth alloy magnetic material to a hydrogen pulverization process. The apparatus includes: a hermetically sealable hydrogen furnace, which includes a furnace body with an opening and a cap for closing the opening; a loading chamber for temporarily enclosing the rare-earth alloy magnetic material when the rare-earth alloy magnetic material, which has been pulverized with hydrogen, is unloaded from the furnace body through the opening; and an inert gas supply for supplying an inert gas into the loading chamber.
摘要翻译：本发明的氢粉碎机是将稀土类合金磁性材料进行氢粉碎处理的装置。该装置包括：气密密封的氢炉，其包括具有开口的炉体和用于封闭开口的盖; 当用氢气粉碎的稀土合金磁性材料通过开口从炉体卸载时，用于临时封闭稀土合金磁性材料的装载室; 以及用于将惰性气体供应到装载室中的惰性气体供应。

15. 发明授权

US06247660B1 Process for hydrogen-pulverizing a rare earth metal-based magnetic material, and hydrogen-pulverizing case 有权
标题翻译：稀土金属类磁性材料的氢粉碎工艺和氢粉碎工艺
公开(公告)号：US06247660B1
公开(公告)日：2001-06-19
申请号：US09413353
申请日：1999-10-06
申请人： Yasuhiko Imai , Koki Tokuhara , Katsumi Okayama , Akiyasu Oota , Akihito Tsujimoto
发明人： Yasuhiko Imai , Koki Tokuhara , Katsumi Okayama , Akiyasu Oota , Akihito Tsujimoto
IPC分类号： B02C1912
CPC分类号： B01J19/02 , B01J2208/00132 , B01J2219/00081 , B01J2219/0236 , B01J2219/0277 , B22F9/023 , B22F2998/00 , H01F1/0573 , B22F1/0055
摘要： A case for hydrogen-pulverizing a rare earth metal-based magnetic material is disclosed. The case includes a case body which is formed of a material having a heat conductivity of 1 W/cm·deg or more. At least one heat-transferring/releasing member is mounted in the case body and formed of a material having a heat conductivity of 1 W/cm·deg or more. The magnetic material is accommodated in the case and subjected to a hydrogen pulverization with hydrogen occluded in the magnetic material. Thus, the heating and cooling of the magnetic material can be performed in a short time, thereby achieving the pulverization of the magnetic material with an extremely excellent
摘要翻译：公开了一种用于粉碎稀土金属基磁性材料的情况。壳体包括由导热率为1W / cm·℃以上的材料形成的壳体。至少一个传热/释放构件安装在壳体中，并由导热率为1W / cm·℃以上的材料形成。将磁性材料容纳在壳体中，并用吸入磁性材料中的氢气进行氢气粉碎。因此，可以在短时间内进行磁性材料的加热和冷却，从而以非常优异的方式实现磁性材料的粉碎

16. 发明授权

US07745004B2 Polymer-coated magnetic particle and magnetic material for absorbing electromagnetic waves 有权
标题翻译：用于吸收电磁波的聚合物涂覆磁性颗粒和磁性材料
公开(公告)号：US07745004B2
公开(公告)日：2010-06-29
申请号：US11258569
申请日：2005-10-25
申请人： Katsumi Okayama , Kaoru Kobayashi , Koichiro Inomata , Satoshi Sugimoto , Yoshihiro Kato
发明人： Katsumi Okayama , Kaoru Kobayashi , Koichiro Inomata , Satoshi Sugimoto , Yoshihiro Kato
IPC分类号： B32B5/16
CPC分类号： B82Y30/00 , B22F1/0018 , B22F1/0059 , B22F9/24 , B22F9/305 , B22F2998/00 , B82Y25/00 , B82Y40/00 , C22C32/0094 , H01F1/0054 , H01F41/30 , H01F41/301 , Y10S977/777 , Y10S977/783 , Y10T428/12146 , Y10T428/254 , Y10T428/256 , Y10T428/257 , Y10T428/29 , Y10T428/2991 , Y10T428/2998 , B22F3/02
摘要： A method for producing a magnetic particle forming a magnetic material for absorbing electromagnetic waves comprises the steps of mixing an organometallic complex or a metal salt with a chain polymer and dissolving the mixture in a solvent (step S1); raising the temperature of the mixture to reaction temperature (step S2), carrying out a reaction at the reaction temperature (step S3); and forming the magnetic particle having a structure that the periphery of each fine particle formed from the organometallic complex or the metal salt is surrounded by the chain polymer and recovering the formed magnetic particle after the reaction (step S4). The magnetic particle has a nanogranular structure to become a magnetic material for absorbing electromagnetic waves. Such a magnetic particle is produced by a wet reaction. Thus, a larger amount of magnetic particle can be produced by one reaction.
摘要翻译：一种形成用于吸收电磁波的磁性材料的磁性颗粒的制造方法包括将有机金属络合物或金属盐与链状聚合物混合并将该混合物溶解在溶剂中的步骤（步骤S1）。将混合物的温度升至反应温度（步骤S2），在反应温度下进行反应（步骤S3）; 并形成具有由有机金属配合物或金属盐形成的各微细颗粒的周围被链状聚合物包围并在反应后回收形成的磁性颗粒的结构的磁性颗粒（步骤S4）。磁性颗粒具有纳米结构，成为吸收电磁波的磁性材料。这样的磁性颗粒是通过湿反应产生的。因此，通过一次反应可以产生更大量的磁性颗粒。

17. 发明申请

US20050116255A1 Magnetic memory device 有权
标题翻译：磁存储器件
公开(公告)号：US20050116255A1
公开(公告)日：2005-06-02
申请号：US10506752
申请日：2003-12-19
申请人： Yoshihiro Kato , Katsumi Okayama , Kaoru Kobayashi , Tetsuya yamamoto , Minoru Ikarashi
发明人： Yoshihiro Kato , Katsumi Okayama , Kaoru Kobayashi , Tetsuya yamamoto , Minoru Ikarashi
IPC分类号： H01L23/00 , H01L21/8246 , H01L23/552 , H01L27/105 , H01L27/22 , H01L43/08 , H01L31/109
CPC分类号： H01L27/222 , B82Y10/00 , H01L23/552 , H01L2224/16 , H01L2924/01004 , H01L2924/01019 , H01L2924/01025 , H01L2924/01077 , H01L2924/01078 , H01L2924/01079 , H01L2924/1305 , H01L2924/3025 , H01L2924/00
摘要： A memory device is proposed which enables to guarantee the operation of MRAM elements being magnetically shielded against a large external magnetic fields without being affected by an internal leakage magnetic field. The MRAM elements 30 which are shielded by magnetic shield layers 33, 34 are placed at an intermediate region 41 avoiding an edge region 43 and a center region 42 of the magnetic shield layers 33, 34 so that the MRAM element is secured to operate normally without being affected by the internal leakage magnetic field avoiding the edge region 43 where the magnetic shield effect is reduced by the exterior magnetic field, and avoiding the central region 42 where the internal leakage magnetic field is large
摘要翻译：提出了一种存储器件，其能够保证MRAM元件的操作不被大的外部磁场屏蔽，而不受内部泄漏磁场的影响。由磁屏蔽层33,34屏蔽的MRAM元件30被放置在中间区域41处，避免了磁屏蔽层33,34的边缘区域43和中心区域42，使得MRAM元件被固定以正常地操作而没有受到内部泄漏磁场的影响，避免了由外部磁场减小磁屏蔽效应的边缘区域43，并且避免了内部泄漏磁场较大的中心区域42

18. 发明授权

US06743394B2 Case for use in sintering process to produce rare-earth magnet, and method for producing rare-earth magnet 有权
标题翻译：用于制造稀土磁体的烧结工艺的情况以及稀土类磁体的制造方法
公开(公告)号：US06743394B2
公开(公告)日：2004-06-01
申请号：US10173786
申请日：2002-06-19
申请人： Akiyasu Oota , Tsuyoshi Wada , Katsumi Okayama
发明人： Akiyasu Oota , Tsuyoshi Wada , Katsumi Okayama
IPC分类号： F27B728
CPC分类号： F27B21/00 , B22F3/003 , B22F2003/1042 , F27B9/028 , F27D1/0006 , F27D5/00 , F27D5/0068 , F27D2001/1891 , H01F1/0557 , H01F1/0577 , H01F41/0253
摘要： A case according to the present invention is used in a sintering process to produce a rare-earth magnet. The case includes: a body with an opening; a door for opening or closing the opening of the body; and supporting rods for horizontally sliding a sintering plate, on which green compacts of rare-earth magnetic alloy powder are placed. The supporting rods are secured inside the body. At least the body and the door are made of molybdenum.
摘要翻译：根据本发明的情况用于制造稀土类磁铁的烧结工序。案件包括：一个开放的身体; 用于打开或关闭身体开口的门; 以及用于水平滑动烧结板的支撑杆，其上放置有稀土磁性合金粉末的生坯。支撑杆固定在体内。至少身体和门都是用钼制成的。

19. 发明授权

US06548014B2 Suspension application apparatus and method for manufacturing rare earth magnet 有权
公开(公告)号：US06548014B2
公开(公告)日：2003-04-15
申请号：US09885540
申请日：2001-06-21
申请人： Hiroyuki Kumokita , Katsumi Okayama , Tsuyoshi Wada
发明人： Hiroyuki Kumokita , Katsumi Okayama , Tsuyoshi Wada
IPC分类号： B22F704
CPC分类号： B05B7/1436 , B05B15/25 , B05C11/025 , B05C11/10 , H01F41/0253 , H01F41/0266
摘要： A suspension application apparatus for applying a suspension containing powder particles of an oxide dispersed in a liquid to a plate for magnet sintering, the oxide having a specific gravity greater than the liquid. The apparatus includes: a container for storing the suspension; a stirrer for stirring the suspension stored in the container; a transport path through which the suspension is transported from the container to the plate; and a homogenizer for homogenizing the suspension by applying a mechanical force to at least part of the suspension flowing through the transport path.

20. 发明授权

US06507318B2 Antenna apparatus and portable communication apparatus 失效
标题翻译：天线装置和便携式通信装置
公开(公告)号：US06507318B2
公开(公告)日：2003-01-14
申请号：US09800864
申请日：2001-03-07
申请人： Hiroki Ito , Katsumi Okayama
发明人： Hiroki Ito , Katsumi Okayama
IPC分类号： H01Q124
CPC分类号： H01Q17/001 , H01Q1/245 , H01Q1/526
摘要： An antenna apparatus and a portable communication apparatus are disclosed to reduce the quantity of electromagnetic waves absorbed by a human body in a portable communication apparatus even in case of any wireless communication frequency corresponding to at least two or more wireless communication systems different in wireless communication frequency, respectively. A dielectric 13 having the frequency dispersibility that varies relative dielectric constant with wireless communication frequencies can equate an electrical length L2 from one end to the other end of a conductive flat plate 11 at two or more types of wireless communication frequencies. This makes it possible to make an impedance at an open end of a single conductive flat plate 11 almost equivalent for any wireless communication frequencies to suppress the surface current, and thus the quantity of electromagnetic waves absorbed by a human body to be reduced.
摘要翻译：公开了一种天线装置和便携式通信装置，即使在与无线通信频率不同的至少两个以上的无线通信系统对应的任何无线通信频率的情况下，也能够减少便携式通信装置中的人体吸收的电磁波的量，分别。具有以无线通信频率改变相对介电常数的频率分散性的电介质13可以将电气长度L2等同于两种或多种类型的无线通信频率的导电平板11的一端到另一端。这使得可以使单个导电平板11的开路端处的阻抗几乎相当于任何无线通信频率，以抑制表面电流，从而减少人体吸收的电磁波的量。

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