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1. 发明申请

US20070231607A1 Substrate for magnetic recording medium, fabrication method thereof, and magnetic recording medium 审中-公开
标题翻译：用于磁记录介质的基板，其制造方法和磁记录介质
公开(公告)号：US20070231607A1
公开(公告)日：2007-10-04
申请号：US11723228
申请日：2007-03-19
申请人： Masaru Ito , Ken Ohashi
发明人： Masaru Ito , Ken Ohashi
IPC分类号： G11B5/66 , G11B5/706 , B05D1/18
CPC分类号： G11B5/667 , G11B5/7325 , G11B5/8404 , G11B5/858
摘要： A soft magnetic under layer (SUL) is formed on a non-magnetic substrate by an electroless plating method. The SUL formed by plating is subjected to magnetic field heat treatment on conditions that the heat treatment temperature is 150° C. to 350° C., a magnetic field applied to the substrate has a strength of 50 oersteds (Oe) or more, and the treatment time is selected within a range of five minutes to ten hours. Through the magnetic field heat treatment, magnetic anisotropy is obtained with a difference (δH=Hd−Hc) of 5 oersteds (Oe) or more in terms of absolute value between a magnetization saturation magnetic field strength (Hd) in the in-plane radial direction of a soft magnetic film and a magnetization saturation magnetic field strength (Hc) in the in-plane circumferential direction of the soft magnetic film, and the magnetic anisotropy is symmetric with respect to the axis of the substrate.
摘要翻译：通过无电镀法在非磁性基板上形成软磁性层（SUL）。通过电镀形成的SUL在热处理温度为150℃〜350℃的条件下进行磁场热处理，施加到基板的磁场的强度为50奥斯特（Oe）以上，治疗时间在5分钟至10小时的范围内选择。通过磁场热处理，获得磁性各向异性，其绝对值为5奥斯特（Oe）或更高的差异（ΔH= H 2 H 3 -H c C）在软磁膜的面内径向方向上的磁化饱和磁场强度（H SUB）和磁化饱和磁场强度（H SUB）之间的磁化饱和磁场强度（H SUB）软磁性膜的面内圆周方向，磁各向异性相对于基板轴线对称。

2. 发明申请

US20070111036A1 Substrate for magnetic recording medium and fabrication method thereof 审中-公开
标题翻译：磁记录介质用基板及其制造方法
公开(公告)号：US20070111036A1
公开(公告)日：2007-05-17
申请号：US11598706
申请日：2006-11-14
申请人： Masaru Ito , Ken Ohashi
发明人： Masaru Ito , Ken Ohashi
IPC分类号： G11B5/66 , G11B5/706
CPC分类号： G11B5/667 , G11B5/8404 , G11B5/858
摘要： Heat treatment is performed on a plated soft magnetic film, so that liquid components and gaseous components having been taken in the film during a plating step are eliminated. The temperature of the heat treatment is preferably set at 100° C. to 350° C. The heat treatment is effective when being divided into at least two times of heat treatment: a first heat treatment performed before a polishing step and a second heat treatment performed after the polishing step.
摘要翻译：在镀覆的软磁性膜上进行热处理，从而消除了在镀覆步骤期间已经被摄入到膜中的液体组分和气体组分。热处理的温度优选设定在100℃〜350℃。热处理在分为至少两次热处理时是有效的：在研磨步骤和第二热处理之前进行的第一热处理在抛光步骤之后进行。

3. 发明授权

US6078237A Rare earth-based permanent magnet material and method for the preparation thereof 有权
标题翻译：稀土永磁材料及其制备方法
公开(公告)号：US6078237A
公开(公告)日：2000-06-20
申请号：US218005
申请日：1998-12-22
申请人： Tadao Nomura , Ken Ohashi , Takehisa Minowa , Yoshio Tawara , Masaru Ito
发明人： Tadao Nomura , Ken Ohashi , Takehisa Minowa , Yoshio Tawara , Masaru Ito
IPC分类号： C22C38/00 , H01F1/053 , H01F1/057 , H01F7/02
CPC分类号： B82Y25/00 , H01F1/057 , H01F1/0571 , H01F1/0576 , H01F1/0579
摘要： Disclosed is a rare earth-based, magnetically anisotropic permanent magnet material consisting of a rare earth element, e.g., neodymium or praseodymium, iron optional in combination with cobalt and boron and having excellent magnetic properties by virtue of the magnetic coupling between the magnetically hard and soft phases. The magnet material has a structure consisting of crystalline particles of, e.g., Nd.sub.2 Fe.sub.14 B, having a particle diameter of 1 .mu.m or larger and fine crystals of iron of submicron size in a rod-shaped or platelet form precipitated within each crystalline particle of Nd.sub.2 Fe.sub.14 B. This magnet material can be prepared by several different methods including, for example, a solid phase reaction of an intermetallic compound of Nd.sub.2 Fe.sub.17 with boron to effect a double decomposition reaction producing Nd.sub.2 Fe.sub.14 B and iron.
摘要翻译：公开了一种稀土类磁性各向异性永磁材料，其由稀土元素（例如钕或镨）组成，铁与钴和硼组合可选，并且由于磁性硬和软相。磁体材料具有由例如粒径为1μm以上的Nd 2 Fe 14 B的结晶粒子构成的结构，在Nd 2 Fe 14 B的各结晶粒子内析出棒状或者血小板形状的亚微米尺寸的铁的微细结晶。该磁体材料可以通过几种不同的方法制备，包括例如Nd 2 Fe 17的金属间化合物与硼的固相反应，以产生产生Nd 2 Fe 14 B和铁的双重分解反应。

4. 发明授权

US5930582A Rare earth-iron-boron permanent magnet and method for the preparation thereof 有权
标题翻译：稀土铁硼永久磁铁及其制备方法
公开(公告)号：US5930582A
公开(公告)日：1999-07-27
申请号：US217207
申请日：1998-12-22
申请人： Masaru Ito , Ken Ohashi , Yoshio Tawara , Tadao Nomura , Takehisa Minowa
发明人： Masaru Ito , Ken Ohashi , Yoshio Tawara , Tadao Nomura , Takehisa Minowa
IPC分类号： C22C33/02 , C22C38/00 , H01F1/053 , H01F1/057 , H01F1/08 , H01F41/02 , B22F3/12 , B22F1/00
CPC分类号： B82Y25/00 , H01F1/0577 , H01F1/0579
摘要： Disclosed is a method for the preparation of a novel composite rare earth-based magnetically anisotropic sintered permanent magnet in which: (a) a base alloy consisting of a host phase of R.sub.2 T.sub.14 B (R: a rare earth element; T: iron or a combination of iron and cobalt) having a particle diameter of 2 to 10 .mu.m and containing in each particle a phase rich in the content of T and having a particle diameter not exceeding 1 .mu.m is prepared by the strip casting method; (b) the base alloy is crushed; (c) the base alloy powder is blended in a specified proportion with a powder of an auxiliary alloy of R-T or R-T-B in a specified proportion; (d) the powder blend is subjected to further comminution; (e) the comminuted powder blend is subjected to compression-molding in a magnetic field into a powder compact; and (f) the powder compact is sintered by a heat treatment.
摘要翻译：公开了一种制备新型复合稀土类磁各向异性烧结永磁体的方法，其中：（a）由R2T14B的主相（R：稀土元素; T：铁或组合的铁和钴），通过带状铸造法制备颗粒直径为2〜10μm，并且在每个颗粒中含有富含T含量的相，其粒径不超过1μm的相。（b）将基础合金粉碎; （c）以规定比例将基础合金粉末以规定比例与R-T或R-T-B的辅助合金粉末混合; （d）粉末混合物进一步粉碎; （e）粉碎的粉末混合物在磁场中进行压缩成型成粉末压块; 和（f）粉末压坯通过热处理烧结。

5. 发明授权

US5976271A Method for the preparation of rare earth based anisotropic permanent magnet 失效
标题翻译：稀土类各向异性永磁体的制备方法
公开(公告)号：US5976271A
公开(公告)日：1999-11-02
申请号：US55822
申请日：1998-04-06
申请人： Tadao Nomura , Masaru Ito , Ken Ohashi
发明人： Tadao Nomura , Masaru Ito , Ken Ohashi
IPC分类号： H01F1/057 , C21D1/04
CPC分类号： B82Y25/00 , H01F1/0571 , H01F1/0579 , Y10S977/838
摘要： Provided by the invention is a method for the preparation of a magnetically anisotropic permanent magnet mainly consisting of crystallites of the Nd.sub.2 Fe.sub.14 B phase. The method comprises the steps of:(a) preparing an amorphous alloy of neodymium, iron and boron in molar fractions corresponding to the Nd.sub.2 Fe.sub.14 B phase or a nanocomposite of the Nd.sub.2 Fe.sub.14 B/Fe.sub.3 B or Nd.sub.2 Fe.sub.14 B/Fe system, for example, by the melt-spun method; and (b) subjecting the amorphous alloy of neodymium, iron and boron to a heat treatment in a magnetic field of at least 3 T (tesla) at a temperature in the range from 550 to 800.degree. C. for a length of time in the range from 1.times.10.sup.2 to 1.times.10.sup.4 seconds in an atmosphere of a non-reactive gas or vacuum.
摘要翻译：本发明提供了一种主要由Nd2Fe14B相微晶组成的磁各向异性永磁体的制备方法。该方法包括以下步骤：（a）制备与Nd 2 Fe 14 B相对应的摩尔分数的钕，铁和硼的非晶合金，或者通过熔融纺丝制备Nd 2 Fe 14 B / Fe 3 B或Nd 2 Fe 14 B / Fe体系的纳米复合材料方法; 和（b）使钕，铁和硼的非晶合金在至少3T（特斯拉）的磁场中在550-800℃的温度下进行热处理一段时间在非反应性气体或真空气氛中，范围为1×102-1×104秒。

6. 发明授权

US08013701B2 Magnetic circuit and method of applying magnetic field 有权
标题翻译：磁场和磁场施加方法
公开(公告)号：US08013701B2
公开(公告)日：2011-09-06
申请号：US12591785
申请日：2009-12-01
申请人： Ken Ohashi
发明人： Ken Ohashi
IPC分类号： H01F7/02 , H01F7/20 , H01F13/00 , G11B5/66
CPC分类号： H01F7/0247 , G11B5/852 , H01F1/055 , H01F3/14 , H01F7/0205 , H01F13/00
摘要： In a magnetic circuit for providing magnetic anisotropy in the in-plane radial direction of a soft magnetic under layer, magnets for perpendicular magnetization are respectively provide on the north and south poles of a magnet for horizontal magnetization. When magnetic circuits configured thus are stacked in a plurality of stages, a magnetic field (air-gap magnetic field) formed in a gap between the magnetic circuits is superimposed by magnetic fields from the magnets for perpendicular magnetization as well as a magnetic field from the magnet for horizontal magnetization (in-plane magnetization). The pole faces of the magnets for perpendicular magnetization are disposed closer to the gap between the magnetic circuits, so that a stronger magnetic field can be formed in the gap.
摘要翻译：在用于在软磁下层的面内径向方向上提供磁各向异性的磁路中，用于垂直磁化的磁体分别在用于水平磁化的磁体的北极和南极上提供。当由此构成的磁路以多级堆叠时，形成在磁路之间的间隙中的磁场（气隙磁场）由用于垂直磁化的磁体的磁场以及来自磁场的磁场叠加磁体用于水平磁化（平面内磁化）。用于垂直磁化的磁体的极面设置成更靠近磁路之间的间隙，从而可以在间隙中形成更强的磁场。

7. 发明授权

US07851076B2 Method of fabricating silicon substrate for magnetic recording media, and magnetic recording medium 失效
标题翻译：制造用于磁记录介质的硅衬底和磁记录介质的方法
公开(公告)号：US07851076B2
公开(公告)日：2010-12-14
申请号：US12211379
申请日：2008-09-16
申请人： Ken Ohashi
发明人： Ken Ohashi
IPC分类号： G11B5/71 , G11B5/82 , H01L21/20
CPC分类号： G11B5/8404
摘要： In this invention, etching is not performed in the step of planarizing a polycrystalline Si wafer, but only mechanical grinding is performed for planarization. This is because, since the etching rate is crystal-face dependent, etching of the polycrystalline Si wafer unavoidably results in formation of steps due to different crystal face orientations of individual crystal grains exposed on a surface of the wafer, thus hindering precision surface planarization. Subsequently, the Si wafer surface is coated with an oxide film to form an Si wafer with oxide film prior to the final polishing stage and then a surface of the oxide film is planarized, to give a planar substrate (i.e., Si substrate with oxide film) having no step on the surface thereof.
摘要翻译：在本发明中，在平坦化多晶Si晶片的步骤中不进行蚀刻，而仅进行机械研磨以进行平面化。这是因为，由于蚀刻速率是晶面依赖的，所以多晶Si晶片的蚀刻不可避免地导致由于暴露在晶片表面上的各个晶粒的晶面取向不同而产生的步骤的形成，从而妨碍了精确的表面平坦化。随后，在最终抛光阶段之前，用氧化膜涂覆Si晶片表面以形成具有氧化膜的Si晶片，然后使氧化膜的表面平坦化，得到平面基板（即，具有氧化膜的Si衬底）在其表面上没有台阶。

8. 发明授权

US07713360B2 Rare earth permanent magnet 有权
标题翻译：稀土永磁铁
公开(公告)号：US07713360B2
公开(公告)日：2010-05-11
申请号：US11062961
申请日：2005-02-22
申请人： Ken Ohashi
发明人： Ken Ohashi
IPC分类号： H01F1/053
CPC分类号： H01F1/0596 , B22F2998/00 , B22F2999/00 , C22C1/0441 , C22C38/005 , H01F1/0536 , H01F1/0557 , B22F9/04 , B22F3/02 , B22F3/10 , B22F2202/05
摘要： It is an object of the present invention to provide a permanent magnet which is observed as a uniform structure without microstructures, but shows a pinning type initial magnetization curve. There is provided a rare earth permanent magnet comprising a magnetic intermetallic compound comprising R, T, N and an unavoidable impurity, wherein R is one or more rare earth elements comprising Y, T is two or more transition metal elements and comprises principally Fe and Co; wherein the magnetic intermetallic compound has an T/R atomic ratio of 6 to 14; a magnetocrystalline anisotropy energy of at least 1 MJ/m3; a Curie point of at least 100° C.; average particle diameter of at least 3 μm; and a substantially uniform structure; wherein the rare earth permanent magnet has a structure that gives a pinning-type initial magnetization curve; and wherein the magnetic intermetallic compound has a Th2Zn17-type structure, and the like.
摘要翻译：本发明的目的是提供一种永久磁铁，其被观察为没有微结构的均匀结构，但是示出了钉扎型初始磁化曲线。提供了包含由R，T，N和不可避免的杂质组成的磁性金属间化合物的稀土永磁体，其中R是一种或多种包含Y的稀土元素，T是两种或更多种过渡金属元素，并且主要包括Fe和Co ; 其中所述磁性金属间化合物的T / R原子比为6〜14; 至少1 MJ / m3的磁晶各向异性能; 居里点至少为100°C。平均粒径至少为3μm; 和基本均匀的结构; 其中所述稀土永磁体具有给出钉扎型初始磁化曲线的结构; 并且其中所述磁性金属间化合物具有Th2Zn17型结构等。

9. 发明申请

US20060012252A1 Linear motor for use in machine tool 审中-公开
标题翻译：用于机床的直线电机
公开(公告)号：US20060012252A1
公开(公告)日：2006-01-19
申请号：US11184645
申请日：2005-07-18
申请人： Koji Miyata , Masanobu Uchida , Ken Ohashi
发明人： Koji Miyata , Masanobu Uchida , Ken Ohashi
IPC分类号： H02K41/00
CPC分类号： H02K41/031 , H02K1/146 , H02K1/2733 , H02K7/09 , H02K2213/03
摘要： The invention is a linear motor that improves the processing speed of machine tools is also a linear motor with significantly reduced cogging force, with which high-speed and high-accuracy processing can be realized. More specifically, the invention is a linear motor for use in a machine tool comprising a stator in which a plurality of permanent magnets having the same shape are mounted on both faces of a plate-like yoke at even intervals such that the permanent magnets have polarities being perpendicular to a direction in which a pair of movers move and alternating in the moving direction; the movers in which armature cores wound with armature coils are disposed such that the armature cores are opposed to the rows of the permanent magnets on the both faces of the stator; and magnetic cores that are disposed on both ends of the movers such that the distance between the magnetic cores and the rows of the permanent magnets is longer than that between the armature cores and the rows of the permanent magnets. Moreover, provided is a laser processing machine in which the above-mentioned permanent magnet type linear motor is used for a three-dimensional moving mechanism.
摘要翻译：本发明是提高机床加工速度的线性马达，也是具有明显减小的齿槽力的线性马达，可实现高速高精度加工。更具体地说，本发明是一种用于机床的线性电动机，其包括定子，其中具有相同形状的多个永磁体以均匀间隔安装在板状磁轭的两个面上，使得永磁体具有极性垂直于一对移动体沿移动方向移动和交替的方向; 电枢铁芯缠绕有电枢线圈的移动器被布置成使得电枢铁芯与定子的两个表面上的永久磁铁列相对; 以及设置在移动体的两端的磁芯，使得磁芯与永磁体的排之间的距离比电枢铁芯和永磁体列之间的距离长。此外，提供了一种激光加工机，其中上述永磁型线性马达用于三维移动机构。

10. 发明授权

US6057656A Magnet block assembly for insertion device 失效
标题翻译：用于插入装置的磁铁块组件
公开(公告)号：US6057656A
公开(公告)日：2000-05-02
申请号：US059086
申请日：1998-04-13
申请人： Ken Ohashi , Masayuki Kawai
发明人： Ken Ohashi , Masayuki Kawai
IPC分类号： H01F7/02 , H01F13/00 , H05H7/04 , H05H13/04 , H01F7/00 , H01J23/10
CPC分类号： H01F7/0278 , H05H7/04 , H01F13/00
摘要： Disclosed is a novel composite magnet assembly for an insertion device of the Halbach type or hybrid type to be inserted into the linear part of, for example, an electron accelerator to generate a sine-curved periodical magnetic field in the air gap between two oppositely facing composite magnet block arrays. Different from a conventional magnet block assembly consisting of a plurality of permanent magnet blocks or alternate assembly of permanent magnet blocks and soft-magnetic pole pieces, the inventive magnet block assembly is composed of a plurality of oppositely facing composite magnet blocks each formed with a single base magnet block provided with a plurality of slits into which insert magnet pieces or insert pole pieces are inserted so that the dimensional accuracy in the length-wise direction of the magnet block assembly can be greatly decreased to improve the regularity of the periodical magnetic field. The base magnet block as well as the insert magnet piece in the Halbach type assembly can be magnetized after assemblage by the application of a pulsed magnetic field.
摘要翻译：公开了一种用于将Halbach型或混合型插入装置插入到例如电子加速器的直线部分中的新型复合磁体组件，以在两相对面的气隙中产生正弦弯曲周期磁场复合磁块阵列。与由多个永磁体块或永磁体块和软磁极片的交替组件组成的常规磁块组件不同，本发明的磁块组件由多个相对的复合磁体块组成，每个形成有单个基体磁体块设置有插入磁体块或插入磁极片的多个狭缝，从而能够大大降低磁体块组件的长度方向的尺寸精度，以提高周期磁场的规律性。 Halbach型组件中的基体磁块以及嵌入式磁体可以通过施加脉冲磁场在组装之后被磁化。

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