专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5609971A Thin film magnetic head 失效
标题翻译：薄膜磁头
公开(公告)号：US5609971A
公开(公告)日：1997-03-11
申请号：US264918
申请日：1994-06-24
申请人： Naoto Matono , Hitoshi Noguchi , Tomomi Yamamoto , Shinji Kobayashi , Masahiro Nakata
发明人： Naoto Matono , Hitoshi Noguchi , Tomomi Yamamoto , Shinji Kobayashi , Masahiro Nakata
IPC分类号： G11B5/147 , G11B5/31 , G11B5/39 , G11B5/66 , B32B9/00
CPC分类号： G11B5/1475 , G11B5/3116 , G11B5/3967 , Y10S428/90 , Y10T428/1171 , Y10T428/12861 , Y10T428/12937
摘要： A thin film magnetic head comprising a lower magnetic core layer 9 and an upper magnetic core layer 12 formed over the core layer 9 with a coil layer 10, a gap spacer layer 11 and an insulating layer provided therebetween, the core layers 9 and 12 each having a core tip region c between a core tip a and a portion b increasing in core width. The core layers 9 and 12 are each formed by a magnetic thin film of NiFe having a positive magnetostriction constant of not greater than 1.times.10.sup.-6 in absolute value and containing 17.5 to 19.5 wt. % of Fe.
摘要翻译：一种薄膜磁头，包括在芯层9上形成的下磁芯层9和上磁芯层12，线圈层10，间隔层11和设置在其间的绝缘层，芯层9和12各自在核心尖端a和芯部宽度增加的部分b之间具有芯部尖端区域c。芯层9和12各自由具有绝对值不大于1×10-6的正磁致伸缩常数的NiFe的磁性薄膜形成，并且含有17.5至19.5wt。 Fe％。

2. 发明授权

US5635082A Process for producing a thin film head of the floating type 失效
标题翻译：用于生产浮动型薄膜头的方法
公开(公告)号：US5635082A
公开(公告)日：1997-06-03
申请号：US537439
申请日：1995-10-02
申请人： Tomomi Yamamoto , Naoto Matono , Hitoshi Noguchi
发明人： Tomomi Yamamoto , Naoto Matono , Hitoshi Noguchi
IPC分类号： G11B5/31 , G11B5/39 , G11B5/60 , G11B5/127
CPC分类号： G11B5/3106 , G11B5/6005 , G11B5/3163
摘要： A thin film head of the floating type includes a head slider 1 having a surface to be opposed to the signal face of a recording medium with a small space formed therebetween. At least one head element 2 is formed by thin film forming techniques on a face of the head slider 1 orthogonal to the slider surface. A protective layer 3 is formed over the head slider face and covers the head element 2. The head slider 1 has a pair of side faces orthogonal to the slider surface to be opposed to the medium and extending in parallel to each other respectively at opposite sides of the head element 2. The protective layer 3 is formed at each of its opposite side portions with a bulging-out curved face R smoothly extending from the surface of the protective layer 3 to the side face of the head slider 1.

3. 发明授权

US5436781A Thin film magnetic head having upper magnetic core layer with layers separated by discontinuous non-magnetic stripes 失效
标题翻译：薄膜磁头具有上部磁芯层，层间隔不连续的非磁性条纹
公开(公告)号：US5436781A
公开(公告)日：1995-07-25
申请号：US172241
申请日：1993-12-23
申请人： Naoto Matono , Isao Yasuda , Tomomi Yamamoto , Hitoshi Noguchi
发明人： Naoto Matono , Isao Yasuda , Tomomi Yamamoto , Hitoshi Noguchi
IPC分类号： G11B5/31 , G11B5/39
CPC分类号： G11B5/3967 , G11B5/3113
摘要： A thin film magnetic head including a lower magnetic core and an upper magnetic core formed of thin films for forming a magnetic circuit with coil windings therebetween enclosed in non magnetic material. The upper core includes an upper magnetic layer, a lower magnetic layer and a discontinuous non-magnetic intermediate layer of a plurality of non-magnetic stripes.
摘要翻译：一种薄膜磁头，包括下部磁芯和由形成具有线圈绕组的磁路的薄膜形成的上磁芯，封闭在非磁性材料中。上芯部包括多个非磁性条纹的上磁性层，下磁性层和不连续的非磁性中间层。

4. 发明授权

US5793579A Thin film magnetic head and process for producing same 失效
标题翻译：薄膜磁头及其制造方法
公开(公告)号：US5793579A
公开(公告)日：1998-08-11
申请号：US756520
申请日：1996-11-26
申请人： Tomomi Yamamoto , Shinji Kobayashi , Naoto Matono
发明人： Tomomi Yamamoto , Shinji Kobayashi , Naoto Matono
IPC分类号： G11B5/31 , G11B5/147
CPC分类号： G11B5/3106 , G11B5/3116 , G11B5/313 , G11B5/3163
摘要： A process for producing a thin film magnetic head comprises a first step of forming a magnetic layer 20 on the surface of a gap spacer layer 9, a second step of forming on the surface of the magnetic layer 20 a lower resist layer 21 shaped to have a smaller width than an upper core layer 11 when seen from above and forming on the resist layer 21 an upper resist layer 22 projecting outward beyond opposite side faces of the resist layer 21 and shaped in conformity with the shape of the upper core layer 11 when seen from above, a third step of shaping the magnetic layer 20 into the upper core layer 11 by ion beam-etching the magnetic layer 20, and a fourth step of removing the lower resist layer 21 and the upper resist layer 22. The core layer 11 consequently formed has a surface including a pair of curved faces R, R smoothly connecting opposite side faces of the layer 11 with respect to the direction of width of a track to the top face of the layer 11, enabling a protective layer forming step to provide a flawless protective layer 14.
摘要翻译：一种制造薄膜磁头的方法包括在间隔层9的表面上形成磁性层20的第一步骤，在磁性层20的表面上形成形成为具有下列抗蚀剂层21的第二步骤：当从上方观察时，比上芯层11的宽度小，并且在抗蚀剂层21上形成向上延伸超过抗蚀剂层21的相对侧面的上抗蚀剂层22，并且形成与上芯层11的形状一致从上方观察到的是通过离子束蚀刻磁性层20将磁性层20成形为上部芯层11的第三步骤，以及去除下部抗蚀剂层21和上部抗蚀剂层22的第四步骤。芯层 11具有包括一对曲面R，R，其平滑地将层11的相对侧面相对于层11的顶面的宽度方向连接起来，从而能够形成保护层提供无瑕疵的保护层14。

5. 发明授权

US07619329B2 Permanent magnet member for coil motor and voice coil motor 有权
标题翻译：线圈电机和音圈电机用永磁体
公开(公告)号：US07619329B2
公开(公告)日：2009-11-17
申请号：US10551803
申请日：2004-03-31
申请人： Takeshi Sakamoto , Tomomi Yamamoto , Tatsuhiro Iwai , Yasuyuki Nakayama
发明人： Takeshi Sakamoto , Tomomi Yamamoto , Tatsuhiro Iwai , Yasuyuki Nakayama
IPC分类号： H02K41/02
CPC分类号： H02K1/04 , H02K1/17 , H02K41/0358
摘要： A magnet body 1 including a shorter periphery 11, a longer periphery 12 located at a position separated from the shorter periphery 11 by a predetermined distance, and a pair of side peripheries 13, 14 connecting the shorter periphery 11 and longer periphery 12 to each other, the magnet body having a fan-shaped planar form; and a corrosion-resistant film (Ni plating film 2) applied to a surface of the magnet body. The permanent magnet member 10 has a thickness whose maximum and minimum values yield a difference of 10 to 150 μm therebetween.
摘要翻译：一个包括较短周边11的磁体1，位于与较短周边11隔开预定距离的位置的较长周边12以及将较短周边11和较长周边12彼此连接的一对侧周周缘13,14 磁体具有扇形平面形状; 以及施加到磁体的表面的耐腐蚀膜（Ni镀膜2）。永久磁铁构件10的厚度的最大值和最小值之间的差为10〜150μm。

6. 发明授权

US07473343B2 Method of manufacturing rare-earth magnet, and plating bath 有权
标题翻译：制造稀土磁体的方法和电镀液
公开(公告)号：US07473343B2
公开(公告)日：2009-01-06
申请号：US10788464
申请日：2004-03-01
申请人： Takeshi Sakamoto , Yasuyuki Nakayama , Tatsuhiro Iwai , Tomomi Yamamoto
发明人： Takeshi Sakamoto , Yasuyuki Nakayama , Tatsuhiro Iwai , Tomomi Yamamoto
IPC分类号： C25D5/12 , C25D3/16 , C23C28/00
CPC分类号： C25D7/001 , C25D3/12 , C25D5/14 , H01F41/026
摘要： Provided are a method of manufacturing a rare-earth magnet with superior corrosion resistance, and a plating bath used for the method. A first protective film including nickel and a second protective film including nickel and sulfur are laminated in order on a magnet body including a rare-earth element. The first protective film is formed through electroplating with a first plating bath including a nickel source, a conductive salt and a pH stabilizer, and having a concentration of the nickel source of 0.3 mol/l to 0.7 mol/l on a nickel atom basis and a conductivity of 80 mS/cm or over. Thereby, a rare-earth-rich phase can be prevented from being leached out, and the production of pinholes can be reduced. Therefore, the corrosion resistance of the rare-earth magnet can be improved.
摘要翻译：提供了具有优异的耐腐蚀性的稀土类磁体的制造方法以及该方法所用的电镀液。包括镍的第一保护膜和包括镍和硫的第二保护膜依次层叠在包括稀土元素的磁体上。第一保护膜通过电镀形成，其中包括镍源，导电盐和pH稳定剂的第一电镀浴，镍原子的浓度为镍原子为0.3mol / l至0.7mol / l，电导率为80mS / cm以上。由此，可以防止稀土相析出，能够减少针孔的产生。因此，能够提高稀土类磁铁的耐腐蚀性。

7. 发明授权

US07859140B2 Permanent magnet member for coil motor and voice coil motor 有权
标题翻译：线圈电机和音圈电机用永磁体
公开(公告)号：US07859140B2
公开(公告)日：2010-12-28
申请号：US12461158
申请日：2009-08-03
申请人： Takeshi Sakamoto , Tomomi Yamamoto , Tatsuhiro Iwai , Yasuyuki Nakayama
发明人： Takeshi Sakamoto , Tomomi Yamamoto , Tatsuhiro Iwai , Yasuyuki Nakayama
IPC分类号： H02K41/35
CPC分类号： H02K1/04 , H02K1/17 , H02K41/0358
摘要： The permanent magnet member 10 for a voice coil motor (VCM) in accordance with the present invention comprises a magnet body 1 including a shorter periphery 11, a longer periphery 12 located at a position separated from the shorter periphery 11 by a predetermined distance, and a pair of side peripheries 13, 14 connecting the shorter periphery 11 and longer periphery 12 to each other, the magnet body having a fan-shaped planar form; and a corrosion-resistant film (Ni plating film 2) applied to a surface of the magnet body. The permanent magnet member 10 has a thickness whose maximum and minimum values yield a difference of 10 to 150 μm therebetween.
摘要翻译：根据本发明的用于音圈电动机（VCM）的永磁体10包括一个包括较短周边11的磁体1，位于与较短周边11分开预定距离的位置的较长周边12，以及具有扇形平面形状的磁体;一对侧周缘13,14，其将较短的周边11和较长的周边12彼此连接; 以及施加到磁体的表面的耐腐蚀膜（Ni镀膜2）。永久磁铁构件10的厚度的最大值和最小值之间的差为10〜150μm。

8. 发明授权

US5750044A Magnet and bonded magnet 失效
标题翻译：磁铁和粘结磁铁
公开(公告)号：US5750044A
公开(公告)日：1998-05-12
申请号：US500578
申请日：1995-07-11
申请人： Tetsuhito Yoneyama , Tomomi Yamamoto , Tetsuya Hidaka , Akira Fukuno
发明人： Tetsuhito Yoneyama , Tomomi Yamamoto , Tetsuya Hidaka , Akira Fukuno
IPC分类号： H01F1/059 , C04B35/04
CPC分类号： H01F1/0596
摘要： A magnet consists essentially of 4-8 at % of R, 10-20 at % of N, 2-10 at % of M, and the balance of T wherein R is at least one rare earth element, Sm being present in R in a proportion of at least 50 at %, T is Fe or Fe and Co, M is Zr with or without partial replacement by at least one element of Ti, V, Cr, Nb, Hf, Ta, Mo, W, Al, C, and P. Contained in the magnet are a hard magnetic phase based on R, T, and N and containing at least one crystalline phase selected from TbCu.sub.7, Th.sub.2 Zn.sub.17, and Th.sub.2 Ni.sub.17 types and a soft magnetic phase consisting of a T phase having a bcc structure, the soft magnetic phase having a mean grain size of 5-60 nm and being present in a proportion of 10-60% by volume. This construction ensures high coercivity, high squareness ratio, and high maximum energy product.
摘要翻译：磁体基本上由R的4-8原子％组成，N为10-20原子％，M为2-10原子％，余量为T，其中R为至少一种稀土元素，Sm存在于R中至少50原子％的比例，T是Fe或Fe和Co，M是具有或不被Ti，V，Cr，Nb，Hf，Ta，Mo，W，Al，C的至少一种元素部分置换的Zr的Zr 和P.包含在磁体中的是基于R，T和N的硬磁相，并且含有至少一种选自TbCu7，Th2Zn17和Th2Ni17类型的结晶相和由具有bcc的T相组成的软磁相结构，软磁性相的平均粒径为5-60nm，以10〜60体积％的比例存在。这种结构确保了高矫顽力，高矩形比和高最大能量产品。

9. 发明申请

US20090289508A1 Permanent magnet member for coil motor and Voice Coil Motor 有权
标题翻译：线圈电机和音圈电机用永磁体
公开(公告)号：US20090289508A1
公开(公告)日：2009-11-26
申请号：US12461158
申请日：2009-08-03
申请人： Takeshi Sakamoto , Tomomi Yamamoto , Tatsuhiro Iwai , Yasuyuki Nakayama
发明人： Takeshi Sakamoto , Tomomi Yamamoto , Tatsuhiro Iwai , Yasuyuki Nakayama
IPC分类号： H02K41/035
CPC分类号： H02K1/04 , H02K1/17 , H02K41/0358
摘要： The permanent magnet member 10 for a voice coil motor (VCM) in accordance with the present invention comprises a magnet body 1 including a shorter periphery 11, a longer periphery 12 located at a position separated from the shorter periphery 11 by a predetermined distance, and a pair of side peripheries 13, 14 connecting the shorter periphery 11 and longer periphery 12 to each other, the magnet body having a fan-shaped planar form; and a corrosion-resistant film (Ni plating film 2) applied to a surface of the magnet body. The permanent magnet member 10 has a thickness whose maximum and minimum values yield a difference of 10 to 150 μm therebetween.
摘要翻译：根据本发明的用于音圈电动机（VCM）的永磁体10包括一个包括较短周边11的磁体1，位于与较短周边11分开预定距离的位置的较长周边12，以及具有扇形平面形状的磁体;一对侧周缘13,14，其将较短的周边11和较长的周边12彼此连接; 以及施加到磁体的表面的耐腐蚀膜（Ni镀膜2）。永久磁铁构件10的厚度的最大值和最小值之间的差为10〜150μm。

10. 发明申请

US20090165595A1 Hard-particle powder for sintered body and sintered body 有权
标题翻译：用于烧结体和烧结体的硬质颗粒粉末
公开(公告)号：US20090165595A1
公开(公告)日：2009-07-02
申请号：US12314945
申请日：2008-12-19
申请人： Tomomi Yamamoto , Seiji Kurata
发明人： Tomomi Yamamoto , Seiji Kurata
IPC分类号： C22C19/07 , B22F1/00
CPC分类号： F01L3/02 , B22F2998/10 , B22F2999/00 , C22C1/0433 , C22C19/07 , C22C33/0278 , F01L2101/00 , F16K1/42 , F16K25/005 , B22F3/02 , B22F3/1021 , B22F3/1007 , B22F2201/016
摘要： The invention provides a hard-particle powder for sintered body, which contains, by mass %, 2% to 3.5% of Si, 6% to 10% of Cr, 20% to 35% of Mo, 0.01% to 0.5% of REM, and the remainder being Co and unavoidable impurities. The invention further provides a sintered body obtained through a mixing step of mixing the above-mentioned hard-particle powder for sintered body with a pure iron powder and a graphite powder to obtain a powder mixture, a forming step of compacting the powder mixture to obtain a compact, and a sintering step of sintering the compact. The hard-particle powder according to the invention has the effect of giving a sintered body having improved wear resistance without substantially impairing powder characteristics and sintering characteristics. Additionally, the sintered body according to the invention has the effect of having excellent wear resistance.
摘要翻译：本发明提供一种烧结体用硬质粉末，其以质量％计含有2％〜3.5％的Si，6％〜10％的Cr，20％〜35％的Mo，0.01％〜0.5％的REM ，其余为Co和不可避免的杂质。本发明还提供一种通过将上述烧结体用硬质粉末与纯铁粉末和石墨粉末混合以获得粉末混合物的混合步骤获得的烧结体，将粉末混合物压实成型步骤压实和烧结步骤。根据本发明的硬质颗粒粉末具有赋予具有改善的耐磨性的烧结体，而不会明显损害粉末特性和烧结特性。此外，根据本发明的烧结体具有优异的耐磨性。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式