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1. 发明专利

HK1091803A1 Ferrite sintered magnet 未知
公开(公告)号：HK1091803A1
公开(公告)日：2007-01-26
申请号：HK06112421
申请日：2006-11-10
申请人： TDK CORP
发明人： MINACHI YOSHIHIKO , NAGAOKA JUNICHI , KURASAWA SYUNSUKE , ITO NOBORU , MURASE TAKU , MASUDA TAKESHI , TAKAGAWA KENYA , UMEDA HIDENOBU
IPC分类号： C04B20060101 , C01G49/00 , C04B35/26 , C04B35/632 , H01F20060101 , H01F1/10 , H01F1/11
摘要： A ferrite magnetic material comprising a main phase of W-type is provided which has magnetic properties improved through the optimization of additives. The ferrite magnetic material comprises a main constituent having a compound represented by composition formula AFe 2+ a Fe 3+ b O 27 (wherein A comprises at least one element selected from Sr, Ba and Pb; 1.5¤a¤2.1; and 12.9¤b¤16.3), a first additive containing a Ca constituent (0.3 to 3.0 wt% in terms of CaCO 3 ) and/or a Si constituent (0.2 to 1.4 wt% in terms of SiO 2 ), and a second additive containing at least one of an Al constituent (0.01 to 1.5 wt% in terms of Al 2 O 3 ), a W constituent (0.01 to 0.6 wt% in terms of WO 3 ), a Ce constituent (0.001 to 0.6 wt% in terms of CeO 2 ), a Mo constituent (0.001 to 0.16 wt% in terms of MoO 3 ), and a Ga constituent (0.001 to 15 wt% in terms of Ga 2 O 3 ).

2. 发明公开

EP1314697A4 FERRITE MATERIAL 有权
标题翻译：铁素体
公开(公告)号：EP1314697A4
公开(公告)日：2005-07-20
申请号：EP01956797
申请日：2001-08-03
申请人： TDK CORP
发明人： AOKI TAKUYA , ITO KO , SAKURAI BUNGO , TAKAHASHI YUKIO , SHIMAZAKI TATSUYA , UMEDA HIDENOBU , OHI AKINORI
IPC分类号： C01G49/00 , C01G53/00 , C04B35/26 , H01F1/34 , C04B35/30
CPC分类号： C04B35/265 , C01G49/0018 , C01G49/0063 , C01G53/006 , C01P2006/42 , C01P2006/80 , C04B35/2666 , C04B2235/3206 , C04B2235/3265 , C04B2235/3275 , C04B2235/3279 , C04B2235/3281 , C04B2235/3284 , C04B2235/3298 , C04B2235/3418 , C04B2235/3445 , C04B2235/604 , C04B2235/96 , H01F1/344
摘要： An Ni-Cu-Zn ferrite material which comprises as major ingredients given amounts of iron oxide, copper oxide, zinc oxide, and nickel oxide and contains as minor ingredients given amounts of bismuth oxide, silicon oxide, magnesium oxide, and cobalt oxide. It has excellent temperature properties (the change in magnetic permeability with temperature is small), has a high quality factor Q, and has high strength.

3. 发明公开

EP1364927A4 MAGNETIC OXIDE SINTER AND HIGH-FREQUENCY CIRCUIT PART EMPLOYING THE SAME 有权
标题翻译：烧结磁性氧化物以及使用这种高频电路部分
公开(公告)号：EP1364927A4
公开(公告)日：2007-03-28
申请号：EP01954432
申请日：2001-08-03
申请人： TDK CORP
发明人： UMEDA HIDENOBU , MURASE TAKU
IPC分类号： C04B35/26 , H01F1/34 , H01F1/37 , H01F17/04
CPC分类号： B32B18/00 , B32B2311/08 , C04B35/2633 , C04B35/265 , C04B35/2666 , C04B35/62675 , C04B2235/3206 , C04B2235/3213 , C04B2235/3215 , C04B2235/3274 , C04B2235/3275 , C04B2235/3279 , C04B2235/3281 , C04B2235/3284 , C04B2235/3298 , C04B2235/36 , C04B2235/365 , C04B2235/656 , C04B2235/767 , C04B2235/77 , C04B2235/96 , C04B2237/34 , C04B2237/40 , C04B2237/408 , H01F1/348 , H01F1/37 , H01F17/04
摘要： A magnetic oxide sinter at least 80% of which is accounted for by Y-type hexagonal ferrite and which comprises cobalt oxide, copper oxide, iron oxide, and AO (AO is at least one of BaO and SrO) as major ingredients in given amounts by mol% and MO (MO is at least one of NiO, ZnO, and MgO) as a preferred optional major ingredient in a given amount by mol% and further contains bismuth oxide (Bi2O3), a borosilicate glass, a borosilicate zinc glass, or a bismuth glass as a minor ingredient in a given amount by wt.%. Because of the constitution, it is usable in a high frequency region of from several hundreds of megahertz to the order of GHz while retaining satisfactory magnetic properties. In the sinter, the amount of phases other than the Y-type hexagonal ferrite is minimal. It can be produced through sintering at 1,000 °C or lower, especially around 900 °C.

4. 发明专利

DE60024395T2 未知
公开(公告)号：DE60024395T2
公开(公告)日：2006-08-03
申请号：DE60024395
申请日：2000-09-11
申请人： TDK CORP
发明人： UMEDA HIDENOBU , MURASE TAKU , KANADA ISAO , SHIMAZAKI TATSUYA
IPC分类号： C04B35/26 , C01G49/00 , H01F1/34
摘要： The present invention can provide a MgCuZn-based ferrite sintered compact which is constituted by having as substantial main component compositions 7.5 to 23.0 mole% of magnesium oxide, 7.0 to 20.0 mole% of copper oxide, 19.0 to 24.2 mole% of zinc oxide and 48.5 to 50.3 mole% of ferric oxide, and the average particle diameter of the ferrite sintered compact is in a range of 1.10 to 7.30 mu m while the standard deviation sigma of the size distribution is in a range of 0.60 to 10.00, resulting in the ferrite sintered compact which has a high impedance with a frequency of not less than 50 MHz and is capable of efficiently cutting of radiant noise by selecting inexpensive materials.

5. 发明专利

DE60024395D1 未知
公开(公告)号：DE60024395D1
公开(公告)日：2006-01-05
申请号：DE60024395
申请日：2000-09-11
申请人： TDK CORP
发明人： UMEDA HIDENOBU , MURASE TAKU , KANADA ISAO , SHIMAZAKI TATSUYA
IPC分类号： C01G49/00 , C04B35/26 , H01F1/34
摘要： The present invention can provide a MgCuZn-based ferrite sintered compact which is constituted by having as substantial main component compositions 7.5 to 23.0 mole% of magnesium oxide, 7.0 to 20.0 mole% of copper oxide, 19.0 to 24.2 mole% of zinc oxide and 48.5 to 50.3 mole% of ferric oxide, and the average particle diameter of the ferrite sintered compact is in a range of 1.10 to 7.30 mu m while the standard deviation sigma of the size distribution is in a range of 0.60 to 10.00, resulting in the ferrite sintered compact which has a high impedance with a frequency of not less than 50 MHz and is capable of efficiently cutting of radiant noise by selecting inexpensive materials.

6. 发明专利

DE60136223D1 未知
公开(公告)号：DE60136223D1
公开(公告)日：2008-11-27
申请号：DE60136223
申请日：2001-08-03
申请人： TDK CORP
发明人： UMEDA HIDENOBU , MURASE TAKU
IPC分类号： C04B35/32 , C04B35/26 , H01F1/34 , H01F1/37 , H01F17/04
摘要： There is provided a sintered body at least 80% of which is constituted of a Y-type hexagonal ferrite. The sintered body contains, as main components, a cobalt oxide, a copper oxide, an iron oxide and AO (AO is at least one of BaO or SrO) in predetermined amounts in mol%, more preferably contains MO (MO is at least one of NiO, ZnO or MgO) in a predetermined amount in mol% in addition to the above components, and also contains, as additional components, bismuth oxide (Bi2O3), borosilicate glass, borosilicate zinc glass or bismuth glass in predetermined amounts in wt%. Thus, a sintered body which exhibits good magnetic properties and is usable up to a high frequency band ranging from several hundred megahertz to gigahertz, contains as few hetero phases other than a Y-type hexagonal ferrite as possible and can be calcined at a temperature of not higher than 1,000 DEG C, particularly about 900 DEG C, and a high-frequency circuit component using the sintered body can be provided.

7. 发明专利

DE60129568T2 未知
公开(公告)号：DE60129568T2
公开(公告)日：2008-04-17
申请号：DE60129568
申请日：2001-08-03
申请人： TDK CORP
发明人： AOKI TAKUYA , ITO KO , SAKURAI BUNGO , TAKAHASHI YUKIO , SHIMAZAKI TATSUYA , UMEDA HIDENOBU , OHI AKINORI
IPC分类号： C01G49/00 , C01G53/00 , C04B35/26 , C04B35/30 , H01F1/34
摘要： There can be provided an NiCuZn-based ferrite material containing, as main components, iron oxide, manganese oxide, copper oxide, zinc oxide and nickel oxide in predetermined amounts, and, as additional components, cobalt oxide and bismuth oxide, and either silicon oxide and magnesium oxide, or talc, in predetermined amounts. The ferrite material has excellent stress resistance, good temperature dependence of initial permeability and a high quality coefficient Q, and undergoes an extremely small change in inductance when an external force is applied.

8. 发明专利

DE60129568D1 未知
公开(公告)号：DE60129568D1
公开(公告)日：2007-09-06
申请号：DE60129568
申请日：2001-08-03
申请人： TDK CORP
发明人： AOKI TAKUYA , ITO KO , SAKURAI BUNGO , TAKAHASHI YUKIO , SHIMAZAKI TATSUYA , UMEDA HIDENOBU , OHI AKINORI
IPC分类号： C01G49/00 , C01G53/00 , C04B35/26 , C04B35/30 , H01F1/34
摘要： There can be provided an NiCuZn-based ferrite material containing, as main components, iron oxide, manganese oxide, copper oxide, zinc oxide and nickel oxide in predetermined amounts, and, as additional components, cobalt oxide and bismuth oxide, and either silicon oxide and magnesium oxide, or talc, in predetermined amounts. The ferrite material has excellent stress resistance, good temperature dependence of initial permeability and a high quality coefficient Q, and undergoes an extremely small change in inductance when an external force is applied.

9. 发明专利

HK1055287A1 Ferrite material 未知
公开(公告)号：HK1055287A1
公开(公告)日：2004-01-02
申请号：HK03107565
申请日：2003-10-17
申请人： TDK CORP
发明人： AOKI TAKUYA , ITO KO , SAKURAI BUNGO , TAKAHASHI YUKIO , SHIMAZAKI TATSUYA , UMEDA HIDENOBU , OHI AKINORI
IPC分类号： C01G20060101 , C01G49/00 , C01G53/00 , C04B20060101 , C04B35/26 , H01F20060101 , H01F1/34
摘要： There can be provided an NiCuZn-based ferrite material containing, as main components, iron oxide, manganese oxide, copper oxide, zinc oxide and nickel oxide in predetermined amounts, and, as additional components, cobalt oxide and bismuth oxide, and either silicon oxide and magnesium oxide, or talc, in predetermined amounts. The ferrite material has excellent stress resistance, good temperature dependence of initial permeability and a high quality coefficient Q, and undergoes an extremely small change in inductance when an external force is applied.

10. 发明专利

JP2015057797A 静電気保護部品有权
标题翻译：静电保护组件
公开(公告)号：JP2015057797A
公开(公告)日：2015-03-26
申请号：JP2014257480
申请日：2014-12-19
申请人： Tdk株式会社 , Tdk Corp , Tdk株式会社
发明人： SATO TAKAHIRO , UMEDA HIDENOBU , SHIBAYAMA TAKESHI
IPC分类号： H01T4/12 , H01T1/20 , H01T2/02 , H01T4/10
摘要：【課題】耐久性を高めることができる静電気保護部品を提供する。【解決手段】静電気保護部品は、複数のセラミック基板2が積層された素体3と、素体3内に形成され、間隔を設けて互いに対向する、放電電極4A及び放電電極4Bと、を備える。放電電極4A,4Bは長手方向D1に沿って延びる本体部11A,11Bを有し、本体部11A,11Bは、長手方向D1における先端12A,12Bと、長手方向D1に沿って延びる側縁14A,14Bとを有する。放電電極4Aと放電電極4Bとは、本体部11Aと本体部11Bとが、短手方向に隣り合うように配置される。放電電極4Aと放電電極4Bとは、短手方向D2において、側縁14Aと側縁14Bとで対向しており、放電電極4Aと放電電極4Bとの間では、側縁14Aと側縁14Bとの間でのみ放電する。【選択図】図3
摘要翻译：要解决的问题：提供提高耐久性的静电保护部件。解决方案：静电保护部件包括：层叠多个陶瓷基板2的元件组件3; 以及放置电极4A和放电电极4B，它们形成在元件组合件3中以彼此间隔开并且彼此面对。放电电极4A，4B分别具有沿纵向方向D1延伸的主体部分11A，11B，主体部分11A，11B具有沿纵向方向D1的尖端12A，12B和沿纵向方向D1延伸的侧边缘14A，14B。放电电极4A和放电电极4B被设置成使得主体部分11A和主体部分11B在横向方向上彼此相邻。放电电极4A的侧边14A和放电电极4B的侧边14B在横向D2上彼此面对。在放电电极4A和放电电极4B之间，仅在侧边缘14A和侧边缘14B之间放电。

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