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

US5449565A Magnetic iron oxide particles, a process for producing the same and a magnetic recording medium 失效
标题翻译：磁性氧化铁颗粒，其制造方法和磁记录介质
公开(公告)号：US5449565A
公开(公告)日：1995-09-12
申请号：US12164
申请日：1993-01-28
申请人： Koso Aoki , Hiroshi Sumita , Nanao Horiishi
发明人： Koso Aoki , Hiroshi Sumita , Nanao Horiishi
IPC分类号： C01G49/00 , G11B5/706 , G11B5/712 , H01F1/11 , G11B5/016
CPC分类号： H01F1/112 , G11B5/70689 , G11B5/712 , Y10T428/2991
摘要： Disclosed herein are magnetic composite iron oxide particles comprising spinel-type Fe.sub.3 O.sub.4 particles as core particles and spinel-type CoFe.sub.2 O.sub.4 outerlayer of the composite iron oxide particles, a process for producing the same, and a magnetic recording medium comprising a substrate and a magnetic recording layer containing the said magnetic iron oxide particles.
摘要翻译：本文公开了包含作为核心颗粒的尖晶石型Fe 3 O 4颗粒和复合氧化铁颗粒的尖晶石型CoFe 2 O 4外层的磁性复合氧化铁颗粒，其制造方法和包含基板和磁记录层的磁记录介质含有所述磁性氧化铁颗粒。

2. 发明授权

US4136158A Production of acicular magnetic iron oxides 失效
标题翻译：生产电磁铁氧化物
公开(公告)号：US4136158A
公开(公告)日：1979-01-23
申请号：US847446
申请日：1977-11-01
申请人： Yosiro Okuda , Nanao Horiishi , Hiroshi Sumita , Tosiharu Harada
发明人： Yosiro Okuda , Nanao Horiishi , Hiroshi Sumita , Tosiharu Harada
IPC分类号： C01G49/06 , G11B5/706 , C01G49/02
CPC分类号： G11B5/70663 , C01G49/06 , C01P2004/54 , C01P2004/62 , C01P2006/42
摘要： In the production of acicular ferromagnetic iron oxide of highly uniform particle size by oxidizing an iron (II) hydroxide suspension at a pH of at least 11 with an oxygen-containing gas to form acicular iron (III) oxide hydroxide, reducing and optionally further reoxidizing this into ferromagnetic iron oxide, the improvement which comprises providing the iron (II) hydroxide suspension with a water-soluble silicate in an amount of less than 1.7% by atom based on the amount of the iron (II) hydroxide in the suspension and calculated as the ratio of Si to Fe (II) while prior to the oxidation of the suspension with the oxygen-containing gas.

3. 发明授权

US4136049A Process for treating acicular magnetite containing Co to stabilize the magnetic properties thereof 失效
标题翻译：用于处理含有磁性的磁性纳米粒子的方法以稳定其磁性能
公开(公告)号：US4136049A
公开(公告)日：1979-01-23
申请号：US820811
申请日：1977-08-01
申请人： Nanao Horiishi , Atushi Takedoi , Hiroyuki Kondo , Hiroshi Sumita , Akira Mukaizaka , Goro Matsui
发明人： Nanao Horiishi , Atushi Takedoi , Hiroyuki Kondo , Hiroshi Sumita , Akira Mukaizaka , Goro Matsui
IPC分类号： C01G49/08 , C01G49/00 , G11B5/706 , H01F1/11 , C01G49/06
CPC分类号： G11B5/70689
摘要： A process for treating acicular magnetite containing Co to stabilize the magnetic properties thereof comprises the steps of heating acicular magnetite containing 0.1 to 2.5% by atom of Co with respect to Fe as starting material at a temperature in the range of 300 - 1000.degree. C in an inert gas atmosphere in which the partial pressure of oxygen is controlled at a value in the range of 0.001 - 1% by weight and for the time sufficient to homogenize the crystal structure of the acicular magnetite by thermal-diffusion of oxygen thereinto, and thereafter saturating the resultant acicular magnetite with oxygen by heating it at a temperature in the range of 40 - 100.degree. C in an oxygen rich atmosphere such as air.

4. 发明授权

US4773931A Spindle ferromagnetic alloy particles 失效
标题翻译：主轴铁磁合金颗粒
公开(公告)号：US4773931A
公开(公告)日：1988-09-27
申请号：US8113
申请日：1987-01-23
申请人： Akio Mishima , Yosiro Okuda , Hiroshi Sumita , Yoshitaka Yoshinaga , Akira Mukaizaka , Tokihiro Kurata
发明人： Akio Mishima , Yosiro Okuda , Hiroshi Sumita , Yoshitaka Yoshinaga , Akira Mukaizaka , Tokihiro Kurata
IPC分类号： B22F9/22 , C22C33/02 , G11B5/706 , H01F1/06 , B22F1/00
CPC分类号： B22F9/22 , C22C33/0257 , G11B5/70615 , H01F1/065
摘要： Disclosed herein is spindle ferromagnetic alloy particles having the aspect ratio (major:minor) of less than 3:1 and the coercive force of 500 to 100 Oe, and containing 0.1 to 13 atomic % of Si to Fe, and a process for producing the same.
摘要翻译：本文公开了具有小于3:1的纵横比（主要：次要）小于3:1的矫顽力和500至100Oe的矫顽力并且含有0.1至13原子％的Si与Fe的锭心铁磁合金颗粒，以及用于制备相同。

5. 发明授权

US06616747B2 Process for producing granular hematite particles 失效
公开(公告)号：US06616747B2
公开(公告)日：2003-09-09
申请号：US10112058
申请日：2002-04-01
申请人： Hiroshi Sumita
发明人： Hiroshi Sumita
IPC分类号： C09C122
CPC分类号： B82Y30/00 , C01G49/06 , C01P2004/50 , C01P2004/62 , C01P2004/64 , C01P2006/19 , C01P2006/60 , C01P2006/62 , C01P2006/63 , C01P2006/64 , C01P2006/66 , C01P2006/80 , C01P2006/82 , C09C1/24
摘要： The process for producing granular hematite particles of the present invention, comprises passing an oxygen-containing gas through an aqueous ferrous nitrate solution in the presence of iron materials and hematite seed crystals at a temperature of 80 to 90° C., thereby obtaining reddish brown precipitates containing granular hematite particles as a main component; subjecting the reddish brown precipitates to filtration, water-washing and then drying; and heat-treating the reddish brown precipitates in air at a temperature of 450 to 900° C. In accordance with the process of the present invention, the granular hematite particles exhibiting a high purity, a small equilibrium water content and a reduced oil absorption can be produced using inexpensive iron raw materials without use of a specific device such as autoclave in an industrially and economically useful manner.

6. 发明授权

US6117540A Non-magnetic black particles, non-magnetic black pigment therefrom and non-magnetic black filler therefrom 失效
标题翻译：非磁性黑色颗粒，非磁性黑色颜料及其非磁性黑色填料
公开(公告)号：US6117540A
公开(公告)日：2000-09-12
申请号：US477707
申请日：2000-01-05
申请人： Yasuyuki Tanaka , Hiroko Morii , Kazuyuki Hayashi , Hiroshi Sumita
发明人： Yasuyuki Tanaka , Hiroko Morii , Kazuyuki Hayashi , Hiroshi Sumita
IPC分类号： C08K3/30 , C09C1/00 , C09C1/24 , C09D7/12 , G11B5/708
CPC分类号： C09D7/1275 , C08K3/30 , C09C1/0081 , C09C1/24 , C09D7/1225 , C09D7/1283 , G11B5/708 , C01P2002/70 , C01P2004/03 , C01P2004/32 , C01P2004/38 , C01P2004/41 , C01P2004/61 , C01P2004/62 , C01P2004/84 , C01P2006/12 , C01P2006/60 , C01P2006/62 , C01P2006/63 , C01P2006/64 , C01P2006/66 , C08K3/0033 , C08K9/02 , Y10S428/90 , Y10T428/25 , Y10T428/257 , Y10T428/2991
摘要： In accordance with the present invention, there are provided non-magnetic black particles composed primarily of Fe and having a hematite structure, which shows an excellent blackness, heat resistance, and dispersibility in a vehicle, and which particles contain manganese in an amount of 5 to 40% by weight based on the weight of the non-magnetic black particles, a soluble sodium salt in an amount of not more than 500 ppm (calculated as Na), and a soluble sulfate in an amount of not more than 200 ppm (calculated as SO.sub.4), and have an average particle size of 0.1 to 10.0 .mu.m and a pH of not less than 5.
摘要翻译：根据本发明，提供了主要由Fe组成并具有赤铁矿结构的非磁性黑色颗粒，其在车辆中表现出优异的黑色度，耐热性和分散性，并且该颗粒含有5个量的锰至40重量％，以不大于500ppm（以Na计算）的量的可溶性钠盐和不大于200ppm的可溶性硫酸盐（以SO4计算），平均粒径为0.1〜10.0μm，pH值不小于5。

7. 发明授权

US6139618A Fine yellow composite iron oxide hydroxide pigment, and paint or resin composition using the same 失效
标题翻译：细黄色复合铁氧化物氢氧化物颜料，以及使用其的油漆或树脂组合物
公开(公告)号：US6139618A
公开(公告)日：2000-10-31
申请号：US383985
申请日：1999-08-26
申请人： Kazuyuki Hayashi , Mineko Ohsugi , Hiroshi Sumita , Hiroko Morii
发明人： Kazuyuki Hayashi , Mineko Ohsugi , Hiroshi Sumita , Hiroko Morii
IPC分类号： C09C1/00 , C09C1/24 , C09C3/06 , C09C1/22 , C09C1/40
CPC分类号： C09C3/063 , B82Y30/00 , C09C1/24 , C01P2004/03 , C01P2004/51 , C01P2004/54 , C01P2004/62 , C01P2004/64 , C01P2004/82 , C01P2006/12 , C01P2006/62 , C01P2006/63 , C01P2006/64 , Y10T428/2991
摘要： A fine yellow composite iron oxide hydroxide pigment of the present invention has an average major axial diameter of not less than 0.005 .mu.m and less than 0.1 .mu.m, which comprises:fine goethite particles as core particles, containing aluminum inside thereof in an amount of 0.05 to 50% by weight, calculated as Al, based on the weight of said core particles; anda composite oxide hydroxide of Fe and Al, coated on the surface of each core particle. Such fine yellow composite iron oxide hydroxide pigment are excellent in transparency and heat resistance.
摘要翻译：本发明的细黄色复合铁氧化物氢氧化物颜料的平均主轴径为0.005μm以上且小于0.1μm，其特征在于，包括：细小的针铁矿颗粒为核心颗粒，其内部含有铝 0.05〜50重量％，以Al计算，基于所述核心颗粒的重量; 和Fe和Al的复合氧化物氢氧化物，涂覆在每个核心颗粒的表面上。这种细黄色复合氧化铁氢氧化物颜料的透明性和耐热性优异。

8. 发明授权

US6087004A Non-magnetic black particles, non-magnetic black pigment therefrom and non-magnetic black filler therefrom 失效
标题翻译：非磁性黑色颗粒，非磁性黑色颜料及其非磁性黑色填料
公开(公告)号：US6087004A
公开(公告)日：2000-07-11
申请号：US912720
申请日：1997-08-18
申请人： Yasuyuki Tanaka , Hiroko Morii , Kazuyuki Hayashi , Hiroshi Sumita
发明人： Yasuyuki Tanaka , Hiroko Morii , Kazuyuki Hayashi , Hiroshi Sumita
IPC分类号： C08K3/30 , C09C1/00 , C09C1/24 , C09D7/12 , G11B5/708 , G11B5/706
CPC分类号： C09D7/1275 , C08K3/30 , C09C1/0081 , C09C1/24 , C09D7/1225 , C09D7/1283 , G11B5/708 , C01P2002/70 , C01P2004/03 , C01P2004/32 , C01P2004/38 , C01P2004/41 , C01P2004/61 , C01P2004/62 , C01P2004/84 , C01P2006/12 , C01P2006/60 , C01P2006/62 , C01P2006/63 , C01P2006/64 , C01P2006/66 , C08K3/0033 , C08K9/02 , Y10S428/90 , Y10T428/25 , Y10T428/257 , Y10T428/2991
摘要： In accordance with the present invention, there are provided non-magnetic black particles composed primarily of Fe and having a hematite structure, which shows an excellent blackness, heat resistance, and dispersibility in a vehicle, and which particles contain manganese in an amount of 5 to 40% by weight based on the weight of the non-magnetic black particles, a soluble sodium salt in an amount of not more than 500 ppm (calculated as Na), and a soluble sulfate in an amount of not more than 200 ppm (calculated as SO.sub.4), and have an average particle size of 0.1 to 10.0 .mu.m and a pH of not less than 5.5.
摘要翻译：根据本发明，提供了主要由Fe组成并具有赤铁矿结构的非磁性黑色颗粒，其在车辆中表现出优异的黑色度，耐热性和分散性，并且该颗粒含有5个量的锰至40重量％，以不大于500ppm（以Na计算）的量的可溶性钠盐和不大于200ppm的可溶性硫酸盐（以SO4计算），平均粒径为0.1〜10.0μm，pH值不小于5.5。

9. 发明授权

US6027559A Yellow iron oxide hydroxide particles and process for producing the same 失效
标题翻译：黄铁氧化物氢氧化物颗粒及其制备方法
公开(公告)号：US6027559A
公开(公告)日：2000-02-22
申请号：US102054
申请日：1998-06-22
申请人： Hiroko Morii , Mineko Ohsugi , Kazuyuki Hayashi , Hiroshi Sumita
发明人： Hiroko Morii , Mineko Ohsugi , Kazuyuki Hayashi , Hiroshi Sumita
IPC分类号： C08K9/02 , C09C1/24 , C01G49/06
CPC分类号： B82Y30/00 , C08K9/02 , C09C1/24 , C01P2004/03 , C01P2004/50 , C01P2004/51 , C01P2004/54 , C01P2004/62 , C01P2004/64 , C01P2004/84 , C01P2006/12 , C01P2006/60 , C01P2006/62 , C01P2006/63 , C01P2006/64 , C01P2006/66 , C01P2006/80 , Y10T428/2991
摘要： Yellow iron oxide hydroxide particles comprising:iron oxide hydroxide particle as a core, andcomposite oxide hydroxide of Fe and Al deposited on surface of said iron oxide hydroxide particle as a core wherein the amount of Al in said composite oxide hydroxide is 0.1 to 10% by weight, calculated as Al, based on the weight of said iron oxide hydroxide as a core, the amount of Fe in said composite oxide hydroxide is 0.1 to 50% by weight, calculated as Fe, based on the weight of said iron oxide hydroxide particle as a core, and the ratio of Al to Fe in said composite oxide hydroxide is 0.05:1 to 2:1, calculated as Al and Fe atoms,said yellow iron oxide hydroxide particles having an average major axis diameter of 0.1 to 1.0 .mu.m, an average minor axis diameter of 0.02 to 0.10 .mu.m, an aspect ratio (major axis diameter/minor axis diameter) of 2 to 20, a BET specific surface area of 10 to 180 m.sup.2 /g and a heat-resistance temperature of not less than 255.degree. C. Such yellow iron oxide hydroxide particles not only have an excellent dispersibility and a further improved heat resistance but also exhibit less change in hue between before and after treatment for improving the heat resistance, and a process for producing such particles.
摘要翻译：黄铁氧化物氢氧化物颗粒包含：以铁氧化物氢氧化物颗粒为核心的铁氧化物氢氧化物颗粒的表面上沉积的Fe和Al的复合氧化物氢氧化物，其中所述复合氧化物氢氧化物中的Al的量为0.1至10％，以所述铁氧化物氢氧化物为核心的重量计算，所述复合氧化物氢氧化物中的Fe的量以Fe计算为0.1-50重量％，以所述铁氧化物氢氧化物的重量为基准粒子为核心，所述复合氧化物氢氧化物中的Al与Fe的比例为Al：Fe和Fe原子计为0.05:1〜2:1，所述黄铁氧化物氢氧化物粒子的平均长轴直径为0.1〜1.0μm m，平均短轴直径为0.02〜0.10μm，纵横比（长轴径/短轴直径）为2〜20，BET比表面积为10〜180m 2 / g，耐热温度为不低于255℃。这种黄色氧化铁的氢氧化物 e颗粒不仅具有优异的分散性和进一步改善的耐热性，而且在改善耐热性之前和之后表现出较少的色调变化，以及制备这种颗粒的方法。

10. 发明授权

US4873010A Spindle-like magnetic iron oxide particles and process for producing the same 失效
标题翻译：主轴状磁性氧化铁颗粒及其制造方法
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。

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