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公开(公告)号：US3954958A
公开(公告)日：1976-05-04
申请号：US529937
申请日：1974-12-05
申请人： Atsuro Matsui , Hidekimi Kadokura , Tadaaki Yako , Hiroshi Umezaki , Kazuo Iida
发明人： Atsuro Matsui , Hidekimi Kadokura , Tadaaki Yako , Hiroshi Umezaki , Kazuo Iida
CPC分类号： C01F7/36
摘要： Powdery alumina hydrate is produced from an alkylaluminum compound by hydrolysis of the alkylaluminum compound by water through the following steps; converting the alkylaluminum compound to an ether complex compound: partially hydrolyzing the ether complex compound in the presence of an non-reactive solvent at a temperature of not higher than about 150.degree.C with stirring so that no alumina hydrate is precipitated until at least 0.8 moles of water reacts with one mole of the alkylaluminum compound, thereby forming polyaluminoxane; completely hydrolyzing the resulting polyaluminoxane at a concentration of not more than about 3.0 grams-atoms as aluminum per liter of non-reactive solvent at a temperature of about 10.degree. to about 150.degree.C with stirring, so that one mole of the feed alkylaluminum compound may be ultimately hydrolyzed completely with 2 to 10 moles of water, thereby precipitating alumina hydrate; and then separating the resulting alumina hydrate from the non-reactive solvent. The alumina hydrate has a good forming ability and also an ability to provide formed shapes having a good mechanical strength.
摘要翻译： 粉状氧化铝水合物由烷基铝化合物通过以下步骤水解烷基铝化合物; 将烷基铝化合物转化为醚络合物：在非反应性溶剂的存在下，在不高于约150℃的温度搅拌下部分水解醚络合物，使得没有氧化铝水合物沉淀直到至少0.8摩尔 的水与1摩尔的烷基铝化合物反应，从而形成聚铝氧烷; 在约10℃至约150℃的温度下，在搅拌下，将不超过约3.0克原子浓度的所得聚铝氧烷完全水解，每升非反应性溶剂为铝，使得1摩尔的进料烷基铝化合物 最终可以用2-10摩尔水完全水解，从而沉淀出水合氧化铝; 然后将所得的氧化铝水合物与非反应性溶剂分离。 氧化铝水合物具有良好的成形能力，并且还具有提供具有良好机械强度的成形形状的能力。
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公开(公告)号：US4704266A
公开(公告)日：1987-11-03
申请号：US872901
申请日：1986-06-11
CPC分类号： C01F7/043 , H01M8/0295 , Y02P70/56
摘要： A method for producing .gamma.-form lithium aluminate powders usable as a material for an electrolyte tile of molten carbonate fuel cells which comprises mixing aluminum alkoxide with one member selected from the group consisting of the lithium salts of inorganic and organic acids, lithium hydroxide and lithium oxide in the presence of a non-aqueous solvent, carrying out reaction with addition of water of 1.5 to 20 moles (including water of crystallization contained in the lithium compound) based on 1 mole of aluminum alkoxide with stirring, and removing the solvent to obtain a solid matter which is then calcined at a temperature in a range of from 650.degree. C. to 1000.degree. C.
摘要翻译： 一种制造可用作熔融碳酸盐燃料电池的电解质瓦的材料的γ-型铝酸锂粉末的方法，其包括将烷醇铝与选自无机和有机酸的锂盐，氢氧化锂和锂的一种物质混合 氧化物，在非水溶剂存在下，在搅拌下，以1摩尔醇铝水溶液加入1.5〜20摩尔的水（包括锂化合物中所含的结晶水）进行反应，除去溶剂，得到 固体物质，然后在650℃至1000℃的温度下煅烧。
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3.发明授权
公开(公告)号：US4740423A
公开(公告)日：1988-04-26
申请号：US825934
申请日：1986-02-04
CPC分类号： G11B5/7085 , C09K3/14 , Y10S428/90 , Y10T428/2991 , Y10T428/2993 , Y10T428/2995 , Y10T428/2996 , Y10T428/2998
摘要： When an abrasive having an oleophilic surface used in a magnetic recording medium obtained by subjecting an inorganic powder having a Mohs hardness of 5 or above and an average particle size of 2 .mu.m across or below to a dry contact treatment with a dispersing agent having an oleophilic group under grinding conditions giving an impact value of 1G or greater is used in combination with a magnetic powder as a magnetic recording layer of magnetic recording medium, the wear at a magnetic head can be prevented and still characteristics can be improved.
摘要翻译： 当具有用于磁记录介质中的具有亲油性表面的磨料通过使具有莫氏硬度为5或更高的平均粒度为2μm的平均粒度为2μm或以下的无机粉末进行干接触处理而获得时，该分散剂具有 与研磨条件下的亲油基团相比，使用1G以上的冲击值与作为磁记录介质的磁记录层的磁性粉末组合使用时，能够防止磁头的磨损，能够提高静电特性。
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公开(公告)号：US4671993A
公开(公告)日：1987-06-09
申请号：US789506
申请日：1985-10-21
CPC分类号： G11B5/7085 , Y10S428/90 , Y10T428/25 , Y10T428/256 , Y10T428/257 , Y10T428/259 , Y10T428/2991 , Y10T428/2995 , Y10T428/2998
摘要： A magnetic recording medium comprising a substrate and a magnetic layer formed on the substrate and comprising an inorganic powder having an average primary particle size of 0.35 .mu.m or less, an angle of repose of 40.degree. or more and a Mors hardness of 5 or more as a reinforcing material, and a magnetic powder, is excellent in wear resistance and durability of the magnetic layer and improves wear and injury of a magnetic head.
摘要翻译： 一种磁记录介质，包括在基板上形成的基板和磁性层，并且包括平均一次粒径为0.35μm以下的无机粉末，休止角为40度以上，摩尔硬度为5以上的无机粉末 作为增强材料和磁性粉末，磁性层的耐磨性和耐久性优异，并且改善磁头的磨损和损伤。
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公开(公告)号：US4650895A
公开(公告)日：1987-03-17
申请号：US575146
申请日：1984-01-30
IPC分类号： C01F7/36 , C01G23/053 , C07F5/06 , C07F7/00
CPC分类号： C07F7/006 , C01F7/36 , C01G23/053 , C07F5/063 , C07F5/069 , C01P2006/80
摘要： High purity organometallic compounds can be obtained by the process which comprises subjecting an organometallic compound in a liquid state under stirring to preliminary oxidation or hydrolysis in a proportion of about 0.1 to 50% by weight of the organometallic compound to form solid reaction products, and separating by distillation the unreacted organometallic compound from the solid reaction products to recover the purified organometallic compound; and high purity metallic compounds such as a solid metallic hydroxide or oxide can be obtained by the process which comprises following the process as mentioned above, oxidizing or hydrolyzing completely the recovered purified organometallic compound.
摘要翻译： 可以通过以下方法获得高纯度有机金属化合物，该方法包括在搅拌下使液态的有机金属化合物以约0.1至50重量％的有机金属化合物的比例预先氧化或水解以形成固体反应产物，并分离 通过从固体反应产物中蒸馏出未反应的有机金属化合物以回收纯化的有机金属化合物; 并且可以通过包括如上所述的方法，完全氧化或水解回收的纯化的有机金属化合物的方法获得诸如固体金属氢氧化物或氧化物的高纯度金属化合物。
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6.发明授权
公开(公告)号：US4584243A
公开(公告)日：1986-04-22
申请号：US545279
申请日：1983-10-25
CPC分类号： G11B5/7085 , C09K3/14 , Y10S428/90 , Y10T428/2991 , Y10T428/2993 , Y10T428/2995 , Y10T428/2996 , Y10T428/2998
摘要： When an abrasive having an oleophilic surface used in a magnetic recording medium obtained by subjecting an inorganic powder having a Mohs hardness of 5 or above and an average particle size of 2 .mu.m across or below to a dry contact treatment with a dispersing agent having an oleophilic group under grinding conditions giving an impact value of 1 G or greater is used in combination with a magnetic powder as a magnetic recording layer of magnetic recording medium, the wear at a magnetic head can be prevented and still characteristics can be improved.
摘要翻译： 当具有用于磁记录介质中的具有亲油性表面的磨料通过使具有莫氏硬度为5或更高的平均粒度为2μm的平均粒度为2μm或以下的无机粉末进行干接触处理而获得时，该分散剂具有 与研磨条件下的亲油基团相比，与磁性粉末作为磁记录介质的磁记录层组合使用的冲击值为1G以上，能够防止磁头的磨损，从而能够提高静电特性。
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公开(公告)号：US4498931A
公开(公告)日：1985-02-12
申请号：US509808
申请日：1983-06-30
申请人： Hidekimi Kadokura , Hiroshi Umezaki
发明人： Hidekimi Kadokura , Hiroshi Umezaki
IPC分类号： C09C1/00 , C01F7/02 , C08K3/04 , C08K3/22 , C09C1/40 , C09C1/48 , C09C1/50 , C04B31/02 , C09C1/44
CPC分类号： C09C1/407 , B82Y30/00 , C08K3/04 , C08K3/22 , C01P2004/62 , C01P2004/64 , C01P2006/12
摘要： Pigmented aluminum oxide powders are provided herein obtained by adding at least 0.5 wt. % of carbon black to aluminum oxide powder, said carbon black having a mean particle size of less than about 100 mn and a specific surface area more than 30 m.sup.2 /g, and mixing the aluminum oxide powder-carbon black composition under an impact value of more than 1 G, preferably by use of a vibration mill. The present invention also provides a method of producing said pigmented aluminum oxide powder.
摘要翻译： 本发明提供了通过加入至少0.5wt。 ％的炭黑与氧化铝粉末，所述碳黑的平均粒度小于约100mn，比表面积大于30m2 / g，并将氧化铝粉末 - 炭黑组合物在冲击值 大于1G，优选地使用振动磨。 本发明还提供了一种制备所述着色氧化铝粉末的方法。
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公开(公告)号：US07511981B2
公开(公告)日：2009-03-31
申请号：US11876607
申请日：2007-10-22
申请人： Hideo Asano , Koji Kitamura , Hisatada Miyatake , Kohki Noda , Toshio Sunaga , Hiroshi Umezaki
发明人： Hideo Asano , Koji Kitamura , Hisatada Miyatake , Kohki Noda , Toshio Sunaga , Hiroshi Umezaki
IPC分类号： G11C5/08
CPC分类号： G11C11/16
摘要： A non-volatile memory device according to one embodiment comprises a plurality of memory cells each comprising a magneto resistive element and a selection transistor; wherein at least some of the memory cells are arranged into a two dimensional array; a first interconnect line extending in a first direction of the memory array and functioning as a gate electrode of a selection transistor included in each memory cell; a second interconnect line extending in the first direction of the memory array; a third interconnect line extending in a second direction; wherein the magneto resistive element of at least some of the memory cells is sandwiched between the second and third interconnect lines, wherein the second interconnect line extends at least partially along all magneto resistive elements in a particular one of the memory cells.
摘要翻译： 根据一个实施例的非易失性存储器件包括多个存储单元，每个存储单元包括磁阻元件和选择晶体管; 其中所述存储器单元中的至少一些被布置成二维阵列; 第一互连线，沿着所述存储器阵列的第一方向延伸并且用作包含在每个存储单元中的选择晶体管的栅电极; 在存储器阵列的第一方向上延伸的第二互连线; 第三互连线，沿第二方向延伸; 其中所述存储器单元中的至少一些的所述磁阻元件夹在所述第二和第三互连线之间，其中所述第二互连线至少部分地沿着所述存储器单元中的特定一个的所有磁阻元件延伸。
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9.发明申请公开(公告)号：US20080204913A1
公开(公告)日：2008-08-28
申请号：US12072751
申请日：2008-02-27
申请人： Hiroshi Umezaki , Shinichi Iwasa
发明人： Hiroshi Umezaki , Shinichi Iwasa
IPC分类号： G11B27/36
摘要： Embodiments of the present invention provide a magnetic head inspection system having a simple configuration capable of inspecting magnetic heads. According to one embodiment, the magnetic head inspection system comprises an inspection module which is provided with a magnetic disk where servo data including track identifier information are recorded, a spindle motor, a carriage having a mount structure to which a head assembly containing a magnetic head is secured, a voice coil motor and a main circuit section. An inspection circuit section instructs the main circuit section to execute control so as to move the magnetic head to a specific track and perform a certain read write operation by the magnetic head in order to inspect the magnetic head.
摘要翻译： 本发明的实施例提供一种具有能够检查磁头的简单结构的磁头检查系统。 根据一个实施例，磁头检查系统包括检查模块，该检查模块设置有磁盘，其中记录有包括轨道标识符信息的伺服数据，主轴电机，具有安装结构的滑架，包含磁头的磁头组件 音圈电机和主电路部分。 检查电路部分指示主电路部分执行控制，以将磁头移动到特定的磁道，并通过磁头进行一定的读写操作，以检查磁头。
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10.发明授权Magnetic memory and method for optimizing write current in a magnetic memory 有权磁存储器和用于优化磁存储器中的写入电流的方法公开(公告)号：US06992924B2
公开(公告)日：2006-01-31
申请号：US10680051
申请日：2003-10-07
申请人： Hisatada Miyatake , Hiroshi Umezaki , Kohji Kitamura , Toshio Sunaga , Kohki Noda , Hideo Asano
发明人： Hisatada Miyatake , Hiroshi Umezaki , Kohji Kitamura , Toshio Sunaga , Kohki Noda , Hideo Asano
IPC分类号： G11C11/15
CPC分类号： G11C11/16 , G11C29/02 , G11C29/028 , G11C2029/5006
摘要： The invention provides methods and apparatus for for determining and providing optimum write bit line current and write word line current in an MRAM. A single reference potential is used to determine the values of the write line current and the bit line current. In determining the optimal values, asteroid curves representing bit line magnetic fields Hx generated by write bit line current IB and word line magnetic fields Hy generated by write word line current Iw for magnetization are considered, and an asteroid curve ACout is defined outside the asteroid curves of all memory cells taking manufacture variations and design margins into account. A write bit line current and a write word line current are selected such that the write current obtained by adding the write bit line current or currents and the write word line current, or the write power consumed by the bit line or lines and the write word line is minimized. Furthermore, in order to prevent multi-selection, the write bit line current and the write word line current are selected so that they generate a synthetic magnetic field on the curve between calculated points of the asteroid curve ACout.
摘要翻译： 本发明提供了用于在MRAM中确定和提供最佳写入位线电流和写入字线电流的方法和装置。 单个参考电位用于确定写入线电流和位线电流的值。 在确定最佳值时，表示通过写入位线电流I B和字线磁场H SUB生成的位线磁场H 的小行星曲线 考虑了用于磁化的写入字线电流I
产生的小行星曲线AC＆lt; SUB＆gt;被定义在所有存储器单元的小行星曲线之外，其采取制造变化和设计余量 考虑到 选择写位线电流和写字线电流，使得通过将写位线电流或电流和写字线电流相加而获得的写入电流或由位线或线消耗的写入功率和写入字 线最小化。 此外，为了防止多次选择，选择写入位线电流和写入字线电流，使得它们在小行星曲线AC的计算点之间的曲线上产生合成磁场， 。
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