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1. 发明授权

US06440323B1 Mn-Zn ferrite and production process thereof 失效
标题翻译：锰锌铁氧体及其制备方法
公开(公告)号：US06440323B1
公开(公告)日：2002-08-27
申请号：US09690902
申请日：2000-10-18
申请人： Osamu Kobayashi , Osamu Yamada , Kiyoshi Ito
发明人： Osamu Kobayashi , Osamu Yamada , Kiyoshi Ito
IPC分类号： B22F100
CPC分类号： C04B35/265 , C01G49/009 , C01P2002/32 , C01P2002/52 , C04B35/2658 , H01F1/344
摘要： This invention provides a Mn—Zn ferrite which has a high electrical resistance and can sufficiently satisfy the use in a high frequency region exceeding 1 MHz. This invention further provides a production process of the Mn—Zn ferrite in which mixed powder whose components are adjusted so as to have a basic component composition containing 44.0 to 50.0 mol% Fe2O3, 4.0 to 26.5 mol % ZnO, 0.1 to 8.0 mol % one or two from TiO2 and SnO2 and the remainder consisting of MnO, and further to contain 0.01 to 2.00 mass % one or more of CoO, NiO, and MgO as additive is pressed, then sintered and cooled in the air or in an atmosphere containing some amount of oxygen.
摘要翻译：本发明提供一种具有高电阻并能够充分满足超过1MHz的高频区域的用途的Mn-Zn铁氧体。本发明还提供了一种Mn-Zn铁氧体的制造方法，其中调整成分为具有含有44.0〜50.0摩尔％的Fe 2 O 3，4.0〜26.5摩尔％的ZnO，0.1〜8.0摩尔％的ZnO的碱性成分组成的混合粉末或者两个来自TiO 2和SnO 2，剩余部分由MnO组成，并且还含有0.01至2.00质量％的一种或多种CoO，NiO和MgO作为添加剂，然后在空气中或在含有一部分的气氛中烧结和冷却氧气量。

2. 发明授权

US06576169B2 Production process of Mn-Zn ferrite 失效
标题翻译：锰锌铁氧体的生产工艺
公开(公告)号：US06576169B2
公开(公告)日：2003-06-10
申请号：US09989496
申请日：2001-11-21
申请人： Osamu Kobayashi , Osamu Yamada , Kiyoshi Ito
发明人： Osamu Kobayashi , Osamu Yamada , Kiyoshi Ito
IPC分类号： B29B1700
CPC分类号： C01G49/009 , C01G49/0072 , C01P2004/61 , C04B35/2658
摘要： A production process of a Mn—Zn ferrite enables wastes of sintered cores to be recycled without serious difficulties in sintering. The production process includes recycling a powder obtained by milling a sintered Mn—Zn ferrite, thereby obtaining a sintered core having a component composition including 44.0 to 49.8 mol % Fe2O3, 4.0 to 26.5 mol % ZnO, 0.02 to 1.00 mol % Mn2O3 and a remainder MnO.
摘要翻译： Mn-Zn铁氧体的制造方法能够使烧结芯的废料再循环，而不会造成烧结的严重困难。制造方法包括将通过研磨Mn-Zn系铁氧体烧结得到的粉末进行再循环，得到具有44.0〜49.8摩尔％Fe 2 O 3，4.0〜26.5摩尔％ZnO，0.02〜1.00摩尔％Mn 2 O 3的组分组成的烧结芯，其余部分 MnO。

3. 发明授权

US06984338B2 Mn-Zn ferrite containing less than 50 mol % Fe2O3 失效
标题翻译：含有小于50mol％Fe 2 O 3的Mn-Zn铁氧体
公开(公告)号：US06984338B2
公开(公告)日：2006-01-10
申请号：US10765057
申请日：2004-01-28
申请人： Osamu Kobayashi , Osamu Yamada , Kiyoshi Ito
发明人： Osamu Kobayashi , Osamu Yamada , Kiyoshi Ito
IPC分类号： H01F1/34 , C04B35/38
CPC分类号： H01F1/344 , C04B35/2658 , C04B2235/3208 , C04B2235/3239 , C04B2235/3244 , C04B2235/3251 , C04B2235/3256 , C04B2235/3262 , C04B2235/3281 , C04B2235/3284 , C04B2235/3418 , C04B2235/6584 , C04B2235/79 , C04B2235/83 , C04B2235/94 , C04B2235/96
摘要： An Mn—Zn ferrite includes base components of 44.0 to 49.8 mol % Fe2O3, 4.0 to 26.5 mol % ZnO, 0.8 mol % or less Mn2O3, and the remainder consisting of MnO, and contains 0.20 (0.20 excluded) to 1.00 mass % CaO as additive. Since the Mn—Zn ferrite contains less than 50.0 mol % Fe2O3 and a limited amount (0.8 mol % or less) of Mn2O3, an abnormal grain growth does not occur even if CaO content is more than 0.20 mass %, and a high electrical resistance can be gained thereby realizing an excellent soft magnetism in a high frequency band such as 1 MHz.
摘要翻译： Mn-Zn铁氧体包括44.0至49.8mol％的Fe 2 O 3 3，4.0至26.5mol％的ZnO，0.8mol％或更少的Mn 2的基础组分其余为MnO，余量由0.20（0.20）除外）添加至1.00质量％的CaO作为添加剂。由于Mn-Zn铁氧体含有少于50.0摩尔％的Fe 2 O 3 O 3和Mn 2 O 3的有限量（0.8摩尔％以下） > O 3时，即使CaO含量大于0.20质量％，也不会发生异常的晶粒生长，并且可以获得高的电阻，从而在高频带中实现优异的软磁性，例如 1 MHz。

4. 发明授权

US06984337B2 Mn—Zn ferrite containing less than 50 mol% Fe2O3 失效
标题翻译：含有小于50mol％Fe 2 O 3的Mn-Zn铁氧体
公开(公告)号：US06984337B2
公开(公告)日：2006-01-10
申请号：US10765050
申请日：2004-01-28
申请人： Osamu Kobayashi , Osamu Yamada , Kiyoshi Ito
发明人： Osamu Kobayashi , Osamu Yamada , Kiyoshi Ito
IPC分类号： C04B35/38 , H01F1/34
CPC分类号： C04B35/2658 , C04B35/63 , C04B2235/3208 , C04B2235/3232 , C04B2235/3239 , C04B2235/3244 , C04B2235/3251 , C04B2235/3256 , C04B2235/3262 , C04B2235/3281 , C04B2235/3284 , C04B2235/3293 , C04B2235/3418 , C04B2235/604 , C04B2235/6584 , C04B2235/83 , C04B2235/94 , C04B2235/96 , H01F1/344
摘要： An Mn—Zn ferrite includes base components of 44.0 to 49.8 mol % Fe2O3, 4.0 to 26.5 mol % ZnO, at least one of 0.1 to 4.0 mol % TiO2 and SnO2, 0.5 mol % or less Mn2O3, and the remainder consisting of MnO, and contains 0.20 (0.20 excluded) to 1.00 mass % CaO as additive. Since the Mn—Zn ferrite contains less than 50 mol % Fe2O3 and a limited amount (0.5 mol % or less) of Mn2O3, an abnormal grain growth does not occur even if CaO content is more than 0.20 mass %, and a high electrical resistance can be gained. And, since an appropriate amount of TiO2 and/or SnO2 is contained, an initial permeability is kept adequately high, whereby an excellent soft magnetism can be achieved in a high frequency band such as 1 MHz.
摘要翻译： Mn-Zn铁氧体包括44.0至49.8mol％的Fe 2 O 3 3，4.0至26.5mol％的ZnO，0.1至4.0mol％的TiO 2中的至少一种的基础组分 2％，和SnO 2，0.5mol％或更少的Mn 2 O 3 3，其余由MnO，含有0.20质量％CaO作为添加剂。由于Mn-Zn铁氧体含有少于50摩尔％的Fe 2 O 3 O 3和少量（0.5摩尔％以下）的Mn 2 O 3 即使CaO含量大于0.20质量％，也不会发生异常的晶粒生长，可以获得高的电阻。并且，由于含有适当量的TiO 2和/或SnO 2 N，所以初始磁导率保持足够高，从而可以获得高的软磁性频段如1 MHz。

5. 发明申请

US20050162234A1 Signal discriminator 审中-公开
标题翻译：信号鉴别器
公开(公告)号：US20050162234A1
公开(公告)日：2005-07-28
申请号：US10511308
申请日：2003-09-22
申请人： Osamu Kobayashi , Osamu Yamada , Yukio Suzuki , Kiyoshi Ito , Mayuka Shirai
发明人： Osamu Kobayashi , Osamu Yamada , Yukio Suzuki , Kiyoshi Ito , Mayuka Shirai
IPC分类号： C04B35/26 , H01F1/34 , H01F17/06 , H03H1/00 , H03B1/00
CPC分类号： C04B35/2625 , C04B35/265 , C04B35/2658 , C04B35/6262 , C04B2235/3232 , C04B2235/3262 , C04B2235/3267 , C04B2235/3279 , C04B2235/3281 , C04B2235/3284 , C04B2235/3293 , C04B2235/5436 , C04B2235/96 , H01F1/344 , H01F17/06 , H01F2017/065
摘要： A signal discriminator is provided which leverages variation of permittivity of Mn—Zn-based ferrite. The signal discriminator comprises a soft magnetic material which has a capacitive reactance C, and which has its complex relative permittivity varying with frequency such that the real part ε′ of the complex relative permittivity is large in a low frequency domain and small in a high frequency domain. In the reactance component X2, the capacitive reactance C is not negligible with respect to the inductive reactance L in a low frequency domain, in consequence of which the value of the reactance component X2 as a parallel circuit of the capacitive reactance C and the inductive reactance L is caused to decrease, and the influence of the capacitive reactance C is decreased in a high frequency domain. Consequently, the reactance component X2 decreases more than the reactance component X1 of a conventional soft magnetic material, and the X-R cross-point frequency moves to a frequency lower than a conventional X-R cross-point frequency XR1, whereby noises in a frequency band where noise components exist are converted into thermal energy thus reducing the waveform distortion originating from high frequency noises.
摘要翻译：提供了一种利用Mn-Zn基铁素体的介电常数变化的信号鉴别器。信号鉴别器包括具有电容电抗C的软磁材料，其复相对电容率随频率而变化，使得复相对介电常数的实部ε在低频域中较大，而在高频下小域。在电抗分量X 2中，电容电抗C相对于低频域中的感抗L是不可忽略的，结果是电容电抗C和电容电抗C的并联电路的电抗分量X 2的值导致电感L降低，并且电容电抗C的影响在高频域中降低。因此，电抗分量X 2比常规软磁材料的电抗分量X 1降低，并且XR交叉点频率移动到低于常规XR交叉点频率XR 1的频率，从而频率上的噪声噪声分量存在的频带被转换成热能，从而减少由高频噪声引起的波形失真。

6. 发明授权

US06436308B2 Mn-Zn ferrite and production process thereof 失效
标题翻译：锰锌铁氧体及其制备方法
公开(公告)号：US06436308B2
公开(公告)日：2002-08-20
申请号：US09769296
申请日：2001-01-26
申请人： Osamu Kobayashi , Osamu Yamada , Kiyoshi Ito
发明人： Osamu Kobayashi , Osamu Yamada , Kiyoshi Ito
IPC分类号： B22F100
CPC分类号： H01F1/344 , C04B35/265 , C04B35/2658
摘要： The present invention provides a Mn—Zn ferrite having an electrical resistivity exceeding 1 &OHgr;m order and having a high initial permeability of 4000 or more at 100 kHz and 100 or more at 10 MHz. The main components of the Mn—Zn ferrite include 44.0 to 49.8 mol % Fe2O3, 15.0 to 26.5 mol % ZnO, 0.1 to 3.0 mol % CoO, 0.02 to 1.00 mol % Mn2O3, and the remainder MnO. The Mn—Zn ferrite can be used in a wide frequency region of 100 kHz to 10 MHz by limiting Fe2O3 content to a range of less than 50 mol %, that is the stoichiometric composition, inhibiting formation of Mn2O3 and adding a proper amount of CoO.
摘要翻译：本发明提供一种Mn-Zn铁氧体，其电阻率超过1欧姆等级，并且在100kHz时具有4000或更高的初始磁导率，在10MHz时具有100或更高的初始磁导率。 Mn-Zn铁氧体的主要成分包括44.0〜49.8mol％的Fe2O3，15.0〜26.5mol％的ZnO，0.1〜3.0mol％的CoO，0.02〜1.00mol％的Mn2O3，余下的是MnO。通过将Fe 2 O 3含量限制在小于50mol％，即化学计量组成的范围内，Mn-Zn铁氧体可以在100kHz至10MHz的宽频率区域中使用，抑制Mn 2 O 3的形成并添加适量的CoO 。

7. 发明授权

US06468441B1 Mn-Zn ferrite and production process thereof 失效
标题翻译：锰锌铁氧体及其制备方法
公开(公告)号：US06468441B1
公开(公告)日：2002-10-22
申请号：US09795133
申请日：2001-03-01
申请人： Osamu Kobayashi , Osamu Yamada , Kiyoshi Ito
发明人： Osamu Kobayashi , Osamu Yamada , Kiyoshi Ito
IPC分类号： C04B3526
CPC分类号： C04B35/2658 , C04B35/265
摘要： The present invention provides a Mn—Zn ferrite having an electrical resistivity exceeding 1 &OHgr;m order and a low core loss in a high frequency region exceeding 1 MHz. A basic component composition of the Mn—Zn ferrite includes 44.0 to 49.8 mol % of Fe2O3, 6.0 to 15.0 mol % of ZnO (15.0 mol % is excluded), 0.1 to 3.0 mol % of CoO, 0.02 to 1.20 mol % of Mn2O3, and the remainder of MnO. The Mn—Zn ferrite achieves desired purposes by controlling Fe2O3 content to a range less than 50 mol % that is the stoichiometric composition, adding a proper amount of CoO, restraining amount of Mn2O3 formation to 1.20 mol % or less, and further setting their average grain sizes to less than 10 &mgr;m.
摘要翻译：本发明提供一种电阻率超过1欧姆等级的Mn-Zn铁氧体，超高于1MHz的高频区域的低铁损。 Mn-Zn铁氧体的基本成分组成包括Fe2O3为44.0〜49.8mol％，ZnO为6.0〜15.0mol％（不包括15.0mol％），CoO为0.1〜3.0mol％，Mn2O3为0.02〜1.20mol％和剩余的MnO。 Mn-Zn铁氧体通过将Fe 2 O 3含量控制在化学计量组成小于50摩尔％的范围内，添加适量的CoO，抑制Mn2O3的形成量为1.20摩尔％以下，进一步设定其平均值粒径小于10um。

8. 发明授权

US06461531B2 Mn-Zn ferrite and production process thereof 失效
标题翻译：锰锌铁氧体及其制备方法
公开(公告)号：US06461531B2
公开(公告)日：2002-10-08
申请号：US09795116
申请日：2001-03-01
申请人： Osamu Kobayashi , Osamu Yamada , Kiyoshi Ito
发明人： Osamu Kobayashi , Osamu Yamada , Kiyoshi Ito
IPC分类号： C04B3526
CPC分类号： C04B35/2658
摘要： The present invention provides a Mn—Zn ferrite having an electrical resistivity exceeding 1 &OHgr;m order and having a low core loss in a high frequency region exceeding 1 MHz. The basic component composition of the Mn—Zn ferrite includes 44.0 to 49.8 mol % Fe2O3, 6.0 to 15.0 mol % ZnO (15.0 mol % is excluded), 0.1 to 4.0 mol % at least one of TiO2 and SnO2, and remainder MnO, wherein desired results are obtained by limiting Fe2O3 content to less than 50 mol % that is the stoichiometric composition and adding a proper amount of TiO2 or SnO2 and further controlling its average grain size to less than 10 &mgr;m.
摘要翻译：本发明提供一种具有超过1欧姆等级的电阻率并且在超过1MHz的高频区域具有低铁损的Mn-Zn铁氧体。 Mn-Zn系铁氧体的基本成分组成包括Fe2O3为44.0〜49.8mol％，ZnO为6.0〜15.0mol％（不包括15.0mol％），TiO 2和SnO 2中的至少一种为0.1〜4.0mol％，余量为MnO，其中，通过将Fe 2 O 3含量限制为小于化学计量组成的50mol％并加入适量的TiO 2或SnO 2并进一步控制其平均晶粒尺寸小于10um而得到期望的结果。

9. 发明授权

US07148767B2 Bead type noise filter 失效
标题翻译：珠型噪声滤波器
公开(公告)号：US07148767B2
公开(公告)日：2006-12-12
申请号：US10515494
申请日：2003-09-22
申请人： Osamu Kobayashi , Osamu Yamada , Yukio Suzuki , Kiyoshi Ito , Mayuka Shirai
发明人： Osamu Kobayashi , Osamu Yamada , Yukio Suzuki , Kiyoshi Ito , Mayuka Shirai
IPC分类号： H03H7/00 , H01F27/24 , C04B35/26
CPC分类号： H01F17/06 , H01F1/344 , H01F3/08 , H01F2017/065 , H01F2017/067 , H03H2001/0092
摘要： A bead type noise filter according to the present invention is constituted by a magnetic core 1 formed of Mn—Zn ferrite having its resistivity increased so as to improve a high frequency characteristic, and having its permittivity lowered, and thereby can successfully suppress radiation noises without distorting the waveform of transmission signals. The magnetic core 1 constituting the bead type noise filter is formed of a high resistivity soft magnetic material, is shaped cylindrical, and has at least one through-hole 1a so as to form a closed magnetic path, and the bead type noise filter is attached on a signal line 2 such that the signal line 2 is inserted through the through-hole 1a. The soft magnetic material has a real part of complex relative permittivity ranging from 1,000 up to 20,000 at 1 kHz and 50 or lower at 1 MHz, and has a resistivity of 150 Ωm or higher.
摘要翻译：根据本发明的珠型噪声滤波器由其电阻率增加的Mn-Zn铁氧体形成的磁芯1构成，以提高高频特性，并且其介电常数降低，从而可以成功地抑制放射线噪声而没有扭曲传输信号的波形。构成胎圈型噪声滤波器的磁芯1由高电阻率软磁性材料形成，成形为圆柱形，并且具有至少一个通孔1a以形成闭合磁路，并且胎圈型噪声滤波器为附着在信号线2上，使得信号线2穿过通孔1a插入。该软磁性材料具有在1kHz下为1,000至20,000的复相对介电常数的实部，1MHz为50或更低，并且具有150Ωm或更高的电阻率。

10. 发明申请

US20060055487A1 BEAD TYPE NOISE FILTER 失效
标题翻译：珠型噪声滤波器
公开(公告)号：US20060055487A1
公开(公告)日：2006-03-16
申请号：US10515494
申请日：2003-09-22
申请人： Osamu Kobayashi , Osamu Yamada , Yukio Suzuki , Kiyoshi Ito , Mayuka Shirai
发明人： Osamu Kobayashi , Osamu Yamada , Yukio Suzuki , Kiyoshi Ito , Mayuka Shirai
IPC分类号： H03H7/01
CPC分类号： H01F17/06 , H01F1/344 , H01F3/08 , H01F2017/065 , H01F2017/067 , H03H2001/0092
摘要： A bead type noise filter according to the present invention is constituted by a magnetic core 1 formed of Mn—Zn ferrite having its resistivity increased so as to improve a high frequency characteristic, and having its permittivity lowered, and thereby can successfully suppress radiation noises without distorting the waveform of transmission signals. The magnetic core 1 constituting the bead type noise filter is formed of a high resistivity soft magnetic material, is shaped cylindrical, and has at least one through-hole 1a so as to form a closed magnetic path, and the bead type noise filter is attached on a signal line 2 such that the signal line 2 is inserted through the through-hole 1a. The soft magnetic material has a real part of complex relative permittivity ranging from 1,000 up to 20,000 at 1 kHz and 50 or lower at 1 MHz, and has a resistivity of 150 Ωm or higher.
摘要翻译：根据本发明的珠型噪声滤波器由其电阻率增加的Mn-Zn铁氧体形成的磁芯1构成，以提高高频特性，并且其介电常数降低，从而可以成功地抑制放射线噪声而没有扭曲传输信号的波形。构成胎圈型噪声滤波器的磁芯1由高电阻率软磁性材料形成，成形为圆柱形，并且具有至少一个通孔1a以形成闭合磁路，并且胎圈型噪声滤波器为附着在信号线2上，使得信号线2穿过通孔1a插入。该软磁性材料具有在1kHz下为1,000至20,000的复相对介电常数的实部，1MHz为50或更低，并且具有150Ωm或更高的电阻率。

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