公开(公告)号：US5238483A

公开(公告)日：1993-08-24

申请号：US921093

申请日：1992-07-29

申请人： Akio Mishima ,  Mamoru Tanihara ,  Yasutaka Ota ,  Hirofumi Kawasaki ,  Kenji Okinaka ,  Kunio Ikemoto ,  Kousaku Tamari ,  Kohji Mori ,  Norimichi Nagai

发明人： Akio Mishima ,  Mamoru Tanihara ,  Yasutaka Ota ,  Hirofumi Kawasaki ,  Kenji Okinaka ,  Kunio Ikemoto ,  Kousaku Tamari ,  Kohji Mori ,  Norimichi Nagai

IPC分类号： G11B5/706

CPC分类号： G11B5/70615

摘要： Disclosed herein are acicular magnetic iron based alloy particles for magnetic recording, containing 1.5 to 10 mol % of B based on Fe (calculated as B) and 1.5 to 10 mol % of Co based on Fe (calculated as Co) in the vicinity of the surfaces of said particles and having a saturation magnetization of not less than 125 emu/g and an S.F.D. value of not more than 0.50, and a process for producing the same.

摘要翻译： 本文公开了用于磁记录的针状磁性铁基合金颗粒，其含有1.5至10mol％的基于Fe的B（以B计）和1.5至10mol％的基于Fe（以Co计算）的Co在附近 所述颗粒的表面具有不小于125emu / g的饱和磁化强度和SFD 值不大于0.50，及其制造方法。

公开(公告)号：US5156922A

公开(公告)日：1992-10-20

申请号：US728328

申请日：1991-07-08

申请人： Akio Mishima ,  Mamoru Tanihara ,  Yasutaka Ota ,  Hirofumi Kawasaki ,  Kenji Okinaka ,  Kunio Ikemoto ,  Kousaku Tamari ,  Kohji Mori ,  Norimichi Nagai

发明人： Akio Mishima ,  Mamoru Tanihara ,  Yasutaka Ota ,  Hirofumi Kawasaki ,  Kenji Okinaka ,  Kunio Ikemoto ,  Kousaku Tamari ,  Kohji Mori ,  Norimichi Nagai

IPC分类号： G11B5/706

CPC分类号： G11B5/70615 ,  Y10T428/12181

摘要： Disclosed herein are acicular magnetic iron based alloy particles for magnetic recording, containing 1.5 to 10 mol % of B based on Fe (calculated as B) and 1.5 to 10 mol % of Co based on Fe (calculated as Co) in the vicinity of the surfaces of said particles and having a saturation magnetization of not less than 125 emu/g and an S.F.D. value of not more than 0.50, and a process for producing the same.

公开(公告)号：US5599378A

公开(公告)日：1997-02-04

申请号：US450205

申请日：1995-05-25

申请人： Akio Mishima ,  Tosiharu Harada ,  Mamoru Tanihara ,  Yasutaka Ota ,  Kenji Okinaka ,  Kohji Mori ,  Hirofumi Kawasaki ,  Norimichi Nagai ,  Katsunori Fujimoto ,  Yoshiro Okuda

发明人： Akio Mishima ,  Tosiharu Harada ,  Mamoru Tanihara ,  Yasutaka Ota ,  Kenji Okinaka ,  Kohji Mori ,  Hirofumi Kawasaki ,  Norimichi Nagai ,  Katsunori Fujimoto ,  Yoshiro Okuda

IPC分类号： G11B5/706 ,  G11B5/714 ,  H01F1/06 ,  H01F1/11 ,  H01F1/36

CPC分类号： G11B5/70621 ,  G11B5/70615 ,  G11B5/714 ,  H01F1/061

摘要： Disclosed herein are spindle-shaped magnetic iron based alloy particles containing at least one selected from the group consisting of Ni, Al, Si, P, Co, Mg, B and Zn, which have a particle length of 0.05 to 0.40 .mu.m, a crystallite size of 110 to 180 .ANG., a specific surface area of 30 to 60 m.sup.2 /g, a coercive force of 1,300 to 1,700 Oe and a saturation magnetization (.sigma.s) of not less than 100 emu/g and a process for producing the same.

摘要翻译： 本文公开了含有选自Ni，Al，Si，P，Co，Mg，B和Zn中的至少一种的锭状磁铁基合金粒子，其粒径为0.05〜0.40μm，a 微晶尺寸为110〜180，比表面积为30〜60m2 / g，矫顽力为1300〜1700Oe，饱和磁化强度（sigma）为100emu / g以上， 相同。

公开(公告)号：US5466306A

公开(公告)日：1995-11-14

申请号：US118287

申请日：1993-09-09

申请人： Akio Mishima ,  Tosiharu Harada ,  Mamoru Tanihara ,  Yasutaka Ota ,  Kenji Okinaka ,  Kohji Mori ,  Hirofumi Kawasaki ,  Norimichi Nagai ,  Katsunori Fujimoto ,  Yoshiro Okuda

发明人： Akio Mishima ,  Tosiharu Harada ,  Mamoru Tanihara ,  Yasutaka Ota ,  Kenji Okinaka ,  Kohji Mori ,  Hirofumi Kawasaki ,  Norimichi Nagai ,  Katsunori Fujimoto ,  Yoshiro Okuda

IPC分类号： G11B5/706 ,  G11B5/714 ,  H01F1/06

CPC分类号： G11B5/70621 ,  G11B5/70615 ,  G11B5/714 ,  H01F1/061

摘要： Disclosed herein are spindle-shaped magnetic iron based alloy particles containing at least one selected from the group consisting of Ni, Al, Si, P, Co, Mg, B and Zn, which have a particle length of 0.05 to 0.40 .mu.m, a crystallite size of 110 to 180 .ANG., a specific surface area of 30 to 60 m.sup.2 /g, a coercive force of 1,300 to 1,700 Oe and a saturation magnetization (.sigma.s) of not less than 100 emu/g and a process for producing the same.

摘要翻译： 本文公开了含有选自Ni，Al，Si，P，Co，Mg，B和Zn中的至少一种的锭状磁铁基合金粒子，其粒径为0.05〜0.40μm，a 微晶尺寸为110〜180，比表面积为30〜60m2 / g，矫顽力为1300〜1700Oe，饱和磁化强度（sigma）为100emu / g以上， 相同。

公开(公告)号：US5531922A

公开(公告)日：1996-07-02

申请号：US527017

申请日：1995-09-12

申请人： Kenji Okinaka ,  Yasutaka Ota ,  Kohji Mori ,  Hirofumi Kawasaki ,  Masayuki Uegami ,  Akio Mishima ,  Katsumi Yamashita ,  Minoru Yamasaki ,  Manabu Matsumoto ,  Kunihiro Kouchi ,  Hiroki Kamon

发明人： Kenji Okinaka ,  Yasutaka Ota ,  Kohji Mori ,  Hirofumi Kawasaki ,  Masayuki Uegami ,  Akio Mishima ,  Katsumi Yamashita ,  Minoru Yamasaki ,  Manabu Matsumoto ,  Kunihiro Kouchi ,  Hiroki Kamon

IPC分类号： G11B5/706 ,  G11B5/714 ,  H01F1/06 ,  C01G49/02

CPC分类号： G11B5/714 ,  G11B5/70647 ,  H01F1/061

摘要： Disclosed herein are granulated particles for magnetic particles for magnetic recording, comprising: acicular ferric hydroxide oxide particles or acicular iron oxide particles; and at least one selected from the group consisting of semisynthetic starch and semisynthetic cellulose and having a bulk density of not less than 0.3 g/cm.sup.3 and a powdering ratio of not more than 40%, and a process for producing the granulated particles, and magnetic particles obtained from such granulated particles.

摘要翻译： 本文公开了用于磁记录的磁性颗粒的造粒颗粒，包括：针状氧化铁氧化物颗粒或针状氧化铁颗粒; 以及选自由半合成淀粉和半合成纤维素组成的组中的至少一种，其堆积密度不小于0.3g / cm 3，粉化比不大于40％，以及制备造粒颗粒的方法和磁性 从这种造粒颗粒获得的颗粒。

公开(公告)号：US06783608B2

公开(公告)日：2004-08-31

申请号：US10128574

申请日：2002-04-24

申请人： Kenji Okinaka ,  Kohji Mori ,  Masayuki Uegami

发明人： Kenji Okinaka ,  Kohji Mori ,  Masayuki Uegami

IPC分类号： H01F106

CPC分类号： G11B5/70621 ,  G11B5/714

摘要： Secondary agglomerates of magnetic metal particles for magnetic recording, have a sodium content of not more than 20 ppm and a calcium content of not more than 40 ppm, an average particle diameter of 300 to 800 &mgr;m and an upper limit of particle diameters of 2,000 &mgr;m, and comprise magnetic metal primary particles having an average major axis diameter of 0.05 to 0.25 &mgr;m.

摘要翻译： 用于磁记录的磁性金属颗粒的二次附聚物的钠含量不超过20ppm，钙含量不大于40ppm，平均粒径为300-800μm，粒径上限为2000μm 并且包括平均长轴直径为0.05至0.25μm的磁性金属一次粒子。

公开(公告)号：US06682813B2

公开(公告)日：2004-01-27

申请号：US10196131

申请日：2002-07-17

申请人： Kohji Mori ,  Yasutaka Ota

发明人： Kohji Mori ,  Yasutaka Ota

IPC分类号： G11B5712

CPC分类号： B22F1/0007 ,  B22F1/004 ,  G11B5/70621 ,  H01F1/061 ,  H01F1/442 ,  Y10T428/2982

摘要： Magnetic acicular alloy particles containing iron as a main component according to the present invention, have an average major axial diameter of 0.05 to 0.2 &mgr;m, and pH values of water suspensions of said magnetic acicular alloy particles containing iron as a main component, which satisfies the formula: (pH value of water suspension treated by A method)−(pH value of water suspension treated by B method)

摘要翻译： 以铁为主要成分的根据本发明的磁针状合金粒子的平均主轴径为0.05〜0.2μm，所述含有铁的磁性针状合金粒子的水悬浮液的pH值为 式中，以铁为主成分的磁性针状合金粒子在车辆中表现出优异的分散性，特别是由极性基团如-SO3M（其中M为H，Na或K）的粘合剂树脂， COOH等，并且其中涂膜中的取向和填充密度得到改善。

公开(公告)号：US06447618B1

公开(公告)日：2002-09-10

申请号：US09361112

申请日：1999-07-27

申请人： Kohji Mori ,  Yasutaka Ota

发明人： Kohji Mori ,  Yasutaka Ota

IPC分类号： H01F103

CPC分类号： B22F1/0007 ,  B22F1/004 ,  G11B5/70621 ,  H01F1/061 ,  H01F1/442 ,  Y10T428/2982

摘要： Magnetic acicular alloy particles containing iron as a main component according to the present invention, have an average major axial diameter of 0.05 to 0.2 &mgr;m, and pH values of water suspensions of said magnetic acicular alloy particles containing iron as a main component, which satisfies the formula: (pH value of water suspension treated by A method)−(pH value of water suspension treated by B method)

摘要翻译： 以铁为主要成分的根据本发明的磁针状合金粒子的平均主轴径为0.05〜0.2μm，所述含有铁的磁性针状合金粒子的水悬浮液的pH值为 式中，以铁为主成分的磁性针状合金粒子在车辆中表现出优异的分散性，特别是由极性基团如-SO3M（其中M为H，Na或K）的粘合剂树脂， COOH等，并且其中涂膜中的取向和填充密度得到改善。

公开(公告)号：US4873010A

公开(公告)日：1989-10-10

申请号：US039775

申请日：1987-04-15

申请人： Atsushi Takedoi ,  Hiroyuki Kondo ,  Masaru Isoai ,  Yoshitaka Yoshinaga ,  Tosiharu Harada ,  Yosiro Okuda ,  Hiroshi Sumita ,  Hirofumi Kawasaki ,  Kohji Mori

发明人： Atsushi Takedoi ,  Hiroyuki Kondo ,  Masaru Isoai ,  Yoshitaka Yoshinaga ,  Tosiharu Harada ,  Yosiro Okuda ,  Hiroshi Sumita ,  Hirofumi Kawasaki ,  Kohji Mori

IPC分类号： G11B5/706

CPC分类号： G11B5/70689 ,  G11B5/70652

摘要： Disclosed herein are magnetic iron oxide particles comprising spindle-like magnetite or maghemite particles having an aspect ratio(major:minor) of less than 4:1 and containing 0.1 to 20 atomic % of Si to Fe, and a process for producing the same.

摘要翻译： 本文公开了包含具有小于4:1的纵横比（主要：次要）且包含0.1至20原子％的Si与Fe的纺锤状磁铁矿或磁赤铁矿颗粒的磁性氧化铁颗粒及其制备方法。

公开(公告)号：US20130244114A1

公开(公告)日：2013-09-19

申请号：US13819068

申请日：2011-08-29

申请人： Akinori Yamamoto ,  Tomoko Okita ,  Hiroshi Yamamoto ,  Kohji Mori ,  Kazumichi Koga ,  Akihisa Kajiyama

发明人： Akinori Yamamoto ,  Tomoko Okita ,  Hiroshi Yamamoto ,  Kohji Mori ,  Kazumichi Koga ,  Akihisa Kajiyama

IPC分类号： H01M4/485

CPC分类号： H01M4/485 ,  C01G23/005 ,  C01G23/006 ,  C01P2002/32 ,  C01P2002/60 ,  C01P2002/70 ,  C01P2002/72 ,  C01P2002/76 ,  C01P2002/77 ,  C01P2004/03 ,  C01P2004/80 ,  C01P2006/12 ,  C01P2006/40 ,  H01B1/08 ,  H01M10/0525 ,  H01M2004/027 ,  Y02E60/122 ,  Y02P70/54

摘要： According to the present invention, there are provided lithium titanate particles which exhibit an excellent initial discharge capacity and an enhanced high-efficiency discharge capacity retention rate as an active substance for non-aqueous electrolyte secondary batteries and a process for producing the lithium titanate particles, and Mg-containing lithium titanate particles. The present invention relates to lithium titanate particles with a spinel structure comprising TiO2 in an amount of not more than 1.5%, Li2TiO3 in an amount of not less than 1% and not more than 6%, and Li4Ti5O12 in an amount of not less than 94% and not more than 99% as determined according to Rietveld analysis when indexed with Fd-3m by XRD, and having a specific surface area of 7 to 15 m2/g as measured by BET method, a process for producing lithium titanate particles comprising the steps of adding and mixing a water-soluble lithium solution into a water suspension of an oxide of titanium having a BET specific surface area of 40 to 400 m2/g and a primary particle diameter of 5 to 50 nm and subjecting the resulting mixed suspension to aging reaction at a temperature of 50 to 100° C.; subjecting the resulting reaction product to filtration, drying and pulverization; and subjecting the obtained dry particles to heat-calcination treatment at a temperature of 550 to 800° C., and Mg-containing lithium titanate particles having a composition represented by the formula: LixMgyTizO4 wherein x, z>0; 0.01≦y≦0.20; 0.01≦y/z≦0.10; and 0.5≦(x+y)/z≦1.0, the Mg-containing lithium titanate particles having a BET specific surface area of 5 to 50 m2/g, a spinel single phase as a crystal structure, and a lattice constant (a) represented by a value of 0.050y+8.3595