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1. 发明授权

US06544667B1 Magnetic recording medium, producing method of the same and magnetic recording system 失效
标题翻译：磁记录介质，制作方法及磁记录系统
公开(公告)号：US06544667B1
公开(公告)日：2003-04-08
申请号：US09523381
申请日：2000-03-10
申请人： Yuzuru Hosoe , Yoshibumi Matsuda , Yotsuo Yahisa , Kiwamu Tanahashi , Hiroyuki Suzuki , Koji Sakamoto , Akira Kato
发明人： Yuzuru Hosoe , Yoshibumi Matsuda , Yotsuo Yahisa , Kiwamu Tanahashi , Hiroyuki Suzuki , Koji Sakamoto , Akira Kato
IPC分类号： G11B565
CPC分类号： G11B5/7325 , G11B5/656 , G11B5/732 , G11B5/851 , Y10T428/12465 , Y10T428/12833 , Y10T428/1284 , Y10T428/12854 , Y10T428/12875 , Y10T428/26 , Y10T428/265
摘要： In a magnetic recording medium having Co-based alloy magnetic layer containing Pt formed on a substrate through an underlayer, by forming said underlayer with plural underlayers including double layer structure which is formed by piling up 1st underlayer of Cr-based alloy containing Ti and 2nd underlayer of Cr-based alloy containing at least one element selected from a group comprising Mo and W in this sequence, crystal grain diameter is decreased and then medium noise can be decreased, and c axis is oriented to in-plane direction and then high coercivity can be obtained, consequently the magnetic recording medium having high signal to noise ratio at high recording density region is obtained. Further a small size large capacity magnetic recording system can be provided by combination of said magnetic recording media with a MR (magnetoresistive) head.
摘要翻译：在具有通过底层形成在基板上的具有Co的Co基合金磁性层的磁记录介质中，通过将包含双层结构的多个底层形成所述底层，所述双层结构通过堆叠含有Ti和第二层的Cr基合金的第一底层而形成在该顺序中含有选自Mo和W的至少一种元素的Cr基合金的下层，晶粒直径减小，然后可以降低中等噪声，并且c轴取向于面内方向，然后取向于高矫顽力可以得到在高记录密度区域具有高信噪比的磁记录介质。此外，可以通过所述磁记录介质与MR（磁阻）磁头的组合来提供小尺寸的大容量磁记录系统。

2. 发明授权

US06372367B1 Magnetic recording medium, method for producing the same and magnetic recording apparatus using the same 失效
标题翻译：磁记录介质及其制造方法及使用其的磁记录装置
公开(公告)号：US06372367B1
公开(公告)日：2002-04-16
申请号：US09309580
申请日：1999-05-11
申请人： Yoshibumi Matsuda , Yotsuo Yahisa , Hiroyuki Suzuki , Koji Sakamoto , Yoko Ogawa , Hiroshi Tani , Susumu Funamoto , Akira Kato , Yuzuru Hosoe
发明人： Yoshibumi Matsuda , Yotsuo Yahisa , Hiroyuki Suzuki , Koji Sakamoto , Yoko Ogawa , Hiroshi Tani , Susumu Funamoto , Akira Kato , Yuzuru Hosoe
IPC分类号： B32B302
CPC分类号： G11B5/7325 , B32B3/02 , B32B15/04 , G11B5/656
摘要： A magnetic recording medium having a high reliability of durability against frictional motion can be ensured even in a severe rubbing test, while a low noise characteristic important for achievement of high-density recording is kept. A first underlayer made of an alloy containing Co or Ni as a main component and containing Cr and Zr simultaneously is formed over a base, a second underlayer having a rough surface is formed on the first underlayer, a third underlayer made of an alloy containing Ni as a main component and containing Cr and Zr simultaneously is formed over the second underlayer, a fourth underlayer as a film for controlling crystalline orientation is formed on the third underlayer, a magnetic layer made of an alloy containing cobalt a main component is formed over the fourth underlayer, and a protective film containing carbon as a main component is formed on the magnetic layer.
摘要翻译：即使在严重的摩擦试验中也能够确保具有高摩擦运动耐久性的可靠性的磁记录介质，同时保持对于实现高密度记录重要的低噪声特性。在基体上形成由含有Co或Ni作为主要成分并含有Cr和Zr的合金制成的第一底层，在第一底层上形成具有粗糙表面的第二底层，由含Ni的合金制成的第三底层作为主要成分并且在第二底层上同时形成含有Cr和Zr的第三底层，在第三底层上形成作为用于控制结晶取向的膜的第四底层，在包含主要成分的钴的合金制成的磁性层上形成第四底层，在该磁性层上形成含有碳的保护膜作为主要成分。

3. 发明授权

US06703148B2 Magnetic recording medium and magnetic disk apparatus using the same 失效
标题翻译：磁记录介质及使用其的磁盘装置
公开(公告)号：US06703148B2
公开(公告)日：2004-03-09
申请号：US10212737
申请日：2002-08-07
申请人： Yoshibumi Matsuda , Yotsuo Yahisa , Koji Sakamoto , Yuzuru Hosoe , Akira Kato
发明人： Yoshibumi Matsuda , Yotsuo Yahisa , Koji Sakamoto , Yuzuru Hosoe , Akira Kato
IPC分类号： G11B566
CPC分类号： G11B5/656 , G11B5/66 , G11B5/732 , G11B5/7325 , Y10S428/90 , Y10T428/12854
摘要： A magnetic recording medium includes an underlayer of a nonmagnetic alloy containing chromium and titanium, a magnetic layer of a Co—Cr—Pt—Ta or Co—Cr—Pt—B alloy, and an intermediate layer of a Co—Cr—Pt alloy and being disposed between the underlayer and the magnetic layer, thereby carrying out high-density information recording and reproducing operation.
摘要翻译：磁记录介质包括含有铬和钛的非磁性合金的底层，Co-Cr-Pt-Ta或Co-Cr-Pt-B合金的磁性层和Co-Cr-Pt合金的中间层并且设置在底层和磁性层之间，从而进行高密度信息记录和再现操作。

4. 发明授权

US06623873B1 Magnetic recording medium and magnetic disk apparatus using the same 失效
标题翻译：磁记录介质及使用其的磁盘装置
公开(公告)号：US06623873B1
公开(公告)日：2003-09-23
申请号：US09444560
申请日：1999-11-19
申请人： Yoshibumi Matsuda , Yotsuo Yahisa , Koji Sakamoto , Yuzuru Hosoe , Akira Kato
发明人： Yoshibumi Matsuda , Yotsuo Yahisa , Koji Sakamoto , Yuzuru Hosoe , Akira Kato
IPC分类号： G11B566
CPC分类号： G11B5/656 , G11B5/66 , G11B5/732 , G11B5/7325 , Y10S428/90 , Y10T428/12854
摘要： A magnetic recording medium includes an underlayer of a nonmagnetic alloy containing chromium and titanium, a magnetic layer of a Co—Cr—Pt—Ta or Co—Cr—Pt—B alloy, and an intermediate layer of a Co—Cr—Pt alloy and being disposed between the underlayer and the magnetic layer, thereby carrying out high-density information recording and reproducing operation.
摘要翻译：磁记录介质包括含有铬和钛的非磁性合金的底层，Co-Cr-Pt-Ta或Co-Cr-Pt-B合金的磁性层和Co-Cr-Pt合金的中间层并且设置在底层和磁性层之间，从而进行高密度信息记录和再现操作。

5. 发明授权

US5906884A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5906884A
公开(公告)日：1999-05-25
申请号：US518391
申请日：1995-08-15
申请人： Yotsuo Yahisa , Yoshibumi Matsuda , Joe Inagaki , Enji Fujita , Takao Yonekawa , Mitsuhiro Shoda , Akira Kato , Yuzuru Hosoe , Masukazu Igarashi
发明人： Yotsuo Yahisa , Yoshibumi Matsuda , Joe Inagaki , Enji Fujita , Takao Yonekawa , Mitsuhiro Shoda , Akira Kato , Yuzuru Hosoe , Masukazu Igarashi
IPC分类号： G11B5/66 , G11B5/65 , G11B5/73 , G11B5/82 , G11B33/08
CPC分类号： G11B5/7315 , G11B5/7325 , G11B5/82 , G11B33/08 , Y10S428/90
摘要： A magnetic recording medium has a substrate made of a nonmetal nonmagnetic material whose coefficient of linear expansion lies within a range from 0.000013/deg to 0.0001/deg. A magnetic layer is formed on the substrate as a thin polycrystalline film or a thin amorphous film. The magnetic layer has Co as a main component, which exhibits a negative magnetostrictive constant so that its coercive force rises in the direction of compressive strain. The magnetic layer is subjected to an in-plane compressive strain from the substrate due to a difference between the coefficient of thermal expansion of the substrate and the magnetic layer so that high coercivity is obtained in the magnetic layer.
摘要翻译：磁记录介质具有由非金属非磁性材料制成的基板，其线性膨胀系数在0.000013 / deg至0.0001 / deg的范围内。作为薄多晶膜或薄的无定形膜，在基板上形成磁性层。磁性层具有Co作为主要成分，其表现出负的磁致伸缩常数，使其矫顽力沿压缩应变的方向上升。由于衬底的热膨胀系数与磁性层之间的差异，磁性层受到来自衬底的面内压缩应变，从而在磁性层中获得高的矫顽力。

6. 发明授权

US06509111B1 Magnetic recording media and magnetic disk apparatus 失效
标题翻译：磁记录介质和磁盘设备
公开(公告)号：US06509111B1
公开(公告)日：2003-01-21
申请号：US09609327
申请日：2000-06-30
申请人： Mitsuhiro Shoda , Naoto Endo , Noriyoshi Goda , Yuzuru Hosoe , Akira Kato
发明人： Mitsuhiro Shoda , Naoto Endo , Noriyoshi Goda , Yuzuru Hosoe , Akira Kato
IPC分类号： G11B566
CPC分类号： G11B5/7325 , G11B5/82 , Y10S428/90
摘要： A magnetic recording media formed of magnetic alloy layer of Co as the main component on a substrate through an under-layer, a protective layer and a lubricant layer, stacked in this order, said under-layer comprises plural under-layers including a first under layer of a substantially amorphous and a second under layer of crystalline stacked in this order; and a &Dgr;BH[0.01, 50] defined by |BH[0.01%]−BH[50%]|, as the difference between a height BH[0.01%] where a Bearing ratio is 0.01% and a height BH[50%] where a Bearing ratio is 50%, is not less than 3 nm and not more than 6 nm, where a Bearing Curve is given by a surface roughness curve of magnetic recording media.
摘要翻译：由Co的磁性合金层作为主要成分的磁性记录介质通过下层，保护层和润滑剂层依次堆叠在基板上，所述下层包括多个下层，其包括第一下层基本上无定形的层和第二下层结晶层; 作为轴承比为0.01％的高度BH [0.01％]和高度BH [50％]之间的差异，由| BH [0.01％] -BH [50％] |定义的DELTABH [0.01,50] 其中轴承比为50％，不小于3nm且不大于6nm，其中轴承曲线由磁记录介质的表面粗糙度曲线给出。

7. 发明授权

US06852432B2 Magnetic recording media and magnetic disk apparatus 失效
标题翻译：磁记录介质和磁盘设备
公开(公告)号：US06852432B2
公开(公告)日：2005-02-08
申请号：US10293261
申请日：2002-11-14
申请人： Mitsuhiro Shoda , Naoto Endo , Noriyoshi Goda , Yuzuru Hosoe , Akira Kato
发明人： Mitsuhiro Shoda , Naoto Endo , Noriyoshi Goda , Yuzuru Hosoe , Akira Kato
IPC分类号： G11B5/64 , G11B5/73 , G11B5/66 , G11B5/70
CPC分类号： G11B5/7325 , G11B5/64 , Y10S428/90 , Y10T428/265
摘要： A magnetic recording media formed of magnetic alloy layer of Co as the main component on a substrate through an under-layer, a protective layer and a lubricant layer, stacked in this order, said under-layer comprises plural under-layers including a first under layer of a substantially amorphous and a second under layer of crystalline stacked in this order; and a Δ BH[0.01, 50] defined by |BH[0.01%]−BH[50%]|, as the difference between a height BH[0.01%] where a Bearing ratio is 0.01% and a height BH[50%] where a Bearing ratio is 50%, is not less than 3 nm and not more than 6 nm, where a Bearing Curve is given by a surface roughness curve of magnetic recording media.
摘要翻译：由Co的磁性合金层作为主要成分的磁性记录介质通过下层，保护层和润滑剂层依次堆叠在基板上，所述下层包括多个下层，其包括第一下层基本上无定形的层和第二下层结晶层; 和由BH [0.01％] -BH [50％] |定义的ΔBB[0.01,50]，作为轴承比为0.01％的高度BH [0.01％]和高度BH [50％ ]其中轴承比为50％，不小于3nm且不大于6nm，其中轴承曲线由磁记录介质的表面粗糙度曲线给出。

8. 发明授权

US5272581A Disk-type recording medium and storage apparatus 失效
标题翻译：盘式记录介质和存储装置
公开(公告)号：US5272581A
公开(公告)日：1993-12-21
申请号：US760073
申请日：1991-09-13
申请人： Shyuichi Kojima , Hiroyuki Suzuki , Akira Kato , Keigo Iechika , Mikio Takada , Masaki Ohura
发明人： Shyuichi Kojima , Hiroyuki Suzuki , Akira Kato , Keigo Iechika , Mikio Takada , Masaki Ohura
IPC分类号： G11B5/64 , G11B5/73 , G11B5/82 , G11B17/038 , G11B19/20 , G11B23/00 , G11B23/03 , G11B25/04 , G11B5/016
CPC分类号： G11B23/0035 , G11B17/038 , G11B19/20 , G11B25/043 , G11B5/82
摘要： A disk-type recording medium having a circular substrate on which a recording layer is formed does not include any through hole formed in the center of rotation. Since no through hole is formed, it is possible to improve the reliability of the medium with regard to its strength, and to reduce the thickness of the substrate. Further, it is possible to render the thickness of the recording coating uniform.
摘要翻译：具有形成有记录层的圆形基板的盘式记录介质不包括形成在旋转中心的任何通孔。由于没有形成通孔，因此可以提高介质的强度的可靠性，并且可以减小基板的厚度。此外，可以使记录涂层的厚度均匀。

9. 发明授权

US09523141B2 High strength Mg alloy and method for producing same 有权
标题翻译：高强度镁合金及其制造方法
公开(公告)号：US09523141B2
公开(公告)日：2016-12-20
申请号：US14356502
申请日：2012-11-06
申请人： Kota Washio , Akira Kato , Toshiji Mukai , Alok Singh , Hidetoshi Somekawa
发明人： Kota Washio , Akira Kato , Toshiji Mukai , Alok Singh , Hidetoshi Somekawa
IPC分类号： C22C23/04 , C22F1/06 , C22C1/02 , C22C23/00 , C22F1/00
CPC分类号： C22F1/06 , C22C1/02 , C22C23/00 , C22C23/04 , C22F1/00
摘要： Provided is an Mg alloy and a method for producing same able to demonstrate high strength without requiring an expensive rare earth element (RE). The high-strength Mg alloy containing Ca and Zn within a solid solubility limit and the remainder having a chemical composition comprising Mg and unavoidable impurities is characterized in comprising equiaxial crystal particles, there being a segregated area of Ca and Zn along the (c) axis of a Mg hexagonal lattice within the crystal particle, and having a structure in which the segregated area is lined up by Mg3 atomic spacing in the (a) axis of the Mg hexagonal lattice. The method for producing the high-strength Mg alloy is characterized in that Ca and Zn are added to Mg in a compounding amount corresponding to the above composition and, after homogenization heat treating an ingot formed by dissolution and casting, the above structure is formed by subjecting the ingot to hot processing.
摘要翻译：提供一种Mg合金及其制造方法，能够显示高强度而不需要昂贵的稀土元素（RE）。含有固溶度极限中的Ca和Zn的高强度Mg合金和其中包含Mg和不可避免的杂质的化学组成的其余部分的特征在于包括等轴晶体颗粒，沿着（c）轴具有Ca和Zn的偏析面积的晶体粒子内的Mg六角形晶格，并且具有在Mg六方晶格的（a）轴上偏析区域被Mg 3原子间隔排列的结构。高强度Mg合金的制造方法的特征在于，以与上述组成相对应的配合量将Mg和Ca添加到Mg中，在通过溶解和铸造形成的锭均质化热处理后，上述结构通过对锭进行热加工。

10. 发明授权

US08792308B2 Radio-controlled watch 有权
标题翻译：无线电控制手表
公开(公告)号：US08792308B2
公开(公告)日：2014-07-29
申请号：US13634403
申请日：2011-03-23
申请人： Akira Kato , Takushi Hagita , Tadashi Yasuoka
发明人： Akira Kato , Takushi Hagita , Tadashi Yasuoka
IPC分类号： G04C11/02
CPC分类号： G05G5/005 , G04R20/06
摘要： Provided is a radio-controlled watch capable of performing leap second correction even when information on a leap second is not received from a satellite. Provided is a radio-controlled watch that adjusts time by receiving a signal containing time information from a satellite, the radio-controlled watch being configured to: store a leap second correction value to be used for leap second correction with respect to the time information; display a numerical value corresponding to the leap second correction value; receive an instruction operation of changing the leap second correction value from a user in a state in which the numerical value is displayed; and change the leap second correction value in response to the received instruction operation.
摘要翻译：提供了即使在没有从卫星接收到关于闰秒的信息的情况下也能够执行闰秒校正的无线电控制的手表。提供一种无线电控制手表，其通过从卫星接收到包含时间信息的信号来调整时间，该无线电控制手表被配置为：存储用于相对于时间信息的闰秒校正的闰秒校正值; 显示对应于闰秒校正值的数值; 在显示数值的状态下接收从用户改变闰秒校正值的指令操作; 并且响应于接收到的指令操作来改变闰秒校正值。

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