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21. 发明申请

US20130009503A1 SINTERED MAGNET, MOTOR, AUTOMOBILE, AND METHOD FOR PRODUCING SINTERED MAGNET 有权
标题翻译：烧结磁体，电动机，汽车和生产烧结磁体的方法
公开(公告)号：US20130009503A1
公开(公告)日：2013-01-10
申请号：US13384896
申请日：2011-03-29
申请人： Makoto Iwasaki , Ryota Kunieda , Fumitaka Baba , Satoshi Tanaka , Yoshinori Fujikawa
发明人： Makoto Iwasaki , Ryota Kunieda , Fumitaka Baba , Satoshi Tanaka , Yoshinori Fujikawa
IPC分类号： H02K21/00 , H01F41/02 , H01F7/02
CPC分类号： H01F41/0293 , B22F2207/01 , C21D6/00 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/10 , C22C38/14 , C22C38/16 , H01F1/0577 , H01F7/02
摘要： The present invention provides a sintered magnet having superior residual magnetic flux density and coercive force. The sintered magnet of the present invention comprises a group of R-T-B based rare earth magnet crystal particles 2 having a core 4 and a shell 6 covering the core 4, the mass ratio of a heavy rare earth element in the shell 6 is higher than the mass ratio of a heavy rare earth element in the core 4, and the thickest part of the shell 6 in the crystal particles 2 faces a grain boundary triple junction 1. A lattice defect 3 is formed between the core 4 and the shell 6.
摘要翻译：本发明提供了具有优异的剩余磁通密度和矫顽力的烧结磁体。本发明的烧结磁体包括一组具有核心4的RTB基稀土磁体晶体颗粒2和覆盖核心4的壳体6，壳体6中的重稀土元素的质量比高于质量芯4中的重稀土元素的比例和晶体颗粒2中的壳6的最厚部分面对晶界三重结1.在芯4和壳6之间形成晶格缺陷3。

22. 发明申请

US20070138432A1 FERRITE MAGNETIC MATERIAL 有权
标题翻译：铁素体磁性材料
公开(公告)号：US20070138432A1
公开(公告)日：2007-06-21
申请号：US11611180
申请日：2006-12-15
申请人： Yoshihiko Minachi , Noboru Ito , Yuuki Aburakawa , Yoshinori Fujikawa , Satoko Ueda
发明人： Yoshihiko Minachi , Noboru Ito , Yuuki Aburakawa , Yoshinori Fujikawa , Satoko Ueda
IPC分类号： H01F1/00 , C04B35/40
CPC分类号： C04B35/2633 , C04B35/2641 , C04B35/6262 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3227 , C04B2235/3277 , C04B2235/3418 , C04B2235/5409 , C04B2235/5445 , C04B2235/605 , C04B2235/656 , C04B2235/6562
摘要： The present invention provides a ferrite magnetic material capable of attaining such magnetic properties that Br+(⅓)HcJ is 6200 or more even by sintering at a temperature of 1150° C. or lower. The ferrite magnetic material includes as a main phase thereof a ferrite phase having a hexagonal structure, the main phase being represented by the following composition formula (1): LaxCamα1−x−m(Fe12−yCoy)z with α representing one or two of Ba and Sr; wherein the constituent ratios of the metal elements constituting the main phase satisfy the following conditions: x and m are the values in a region bounded by the points, A: (0.53, 0.27), B: (0.64, 0.27), C: (0.64, 0.35), D: (0.53, 0.45), E: (0.47, 0.45) and F: (0.47, 0.32) in the (x, m) coordinates shown in FIG. 2; 1.3≦x/yz≦1.8; and 9.5≦12z≦11.0.
摘要翻译：本发明提供一种铁氧体磁性材料，即使在1150℃以下的温度下烧结也能够获得Br +（1/3）HcJ为6200以上的磁特性。铁氧体磁性材料主要包括具有六方结构的铁素体相，其主相由以下组成式（1）表示：La x Si x Ca α1-x M（Fe 12-y Co y z）Z a，其中α代表一个或两个Ba和锶其中构成主相的金属元素的组成比满足以下条件：x和m是由点限定的区域中的值，A：（0.53,0.27），B：（0.64,0 .27），C：（ 0.64,0.35），D：（0.53,0.45），E：（0.47,0.45）和F：（0.47,0.32）。 2; 1.3 <= x / yz <= 1.8; 和9.5 <= 12z <= 11.0。

23. 发明申请

US20050260410A1 Ceramic material powder, method of production thereof, dielectric ceramic composition, electronic device, and multilayer ceramic capacitor 审中-公开
标题翻译：陶瓷材料粉末，其制造方法，介电陶瓷组合物，电子器件和多层陶瓷电容器
公开(公告)号：US20050260410A1
公开(公告)日：2005-11-24
申请号：US11133206
申请日：2005-05-20
申请人： Yoshinori Fujikawa , Yuji Umeda , Fumikazu Yamane
发明人： Yoshinori Fujikawa , Yuji Umeda , Fumikazu Yamane
IPC分类号： B32B5/16 , C01G23/00 , C04B35/468 , C04B35/628 , H01G4/12
CPC分类号： C04B35/4682 , B32B2311/22 , C01G23/003 , C01P2006/40 , C04B35/628 , C04B35/62807 , C04B35/6281 , C04B35/62815 , C04B35/62818 , C04B35/62886 , C04B35/62894 , C04B35/62897 , C04B35/64 , C04B2235/3206 , C04B2235/3208 , C04B2235/3215 , C04B2235/3224 , C04B2235/3225 , C04B2235/3239 , C04B2235/3241 , C04B2235/3262 , C04B2235/3418 , C04B2235/441 , C04B2235/449 , C04B2235/5445 , C04B2235/6025 , C04B2235/6582 , C04B2235/6584 , C04B2235/663 , C04B2235/72 , C04B2235/724 , C04B2235/726 , C04B2235/727 , C04B2237/346 , C04B2237/405 , H01G4/1227 , Y10T428/2991
摘要： A ceramic material powder comprised of main ingredient particles formed by barium titanate having on their surfaces a covering layer comprised of a secondary ingredient additive, wherein when an average radius of the main ingredient particles is “r” and an average radius of the covering layer is “Δr”, the Δr is controlled to a range of 0015r to 0.055r, thereby enabling acquisition of a multilayer ceramic capacitor or other electronic device satisfying both the X7R characteristic prescribed in the EIAJ standard and B characteristic prescribed in the Japan Industrial Standard (JIS), that is, excellent in temperature stability of the electrostatic capacity, having a good insulation resistance value, relative dielectric constant, or other characteristics, and having a long accelerated life of the insulation resistance.
摘要翻译：一种由钛酸钡形成的主要成分颗粒组成的陶瓷材料粉末，其表面具有由次要添加剂组成的覆盖层，其中当主要成分颗粒的平均半径为“r”且覆盖层的平均半径为 “Deltar”，Deltar控制在0015r至0.055r的范围内，从而可以获得满足EIAJ标准规定的X7R特性和日本工业标准（JIS）规定的B特性的多层陶瓷电容器或其他电子设备），即具有良好的绝缘电阻值，相对介电常数或其它特性，并且绝缘电阻的加速寿命长的静电电容的温度稳定性优异。

24. 发明授权

US06548437B2 Dielectric ceramics and electronic component 失效
公开(公告)号：US06548437B2
公开(公告)日：2003-04-15
申请号：US09835492
申请日：2001-04-17
申请人： Shigeki Sato , Yoshihiro Terada , Yoshinori Fujikawa
发明人： Shigeki Sato , Yoshihiro Terada , Yoshinori Fujikawa
IPC分类号： C04B35468
CPC分类号： H01G4/1227
摘要： Provided are dielectric ceramics and an electronic component capable of enhancing the longevity of insulation resistance under load at high temperature, namely, the so-called lifetime of IR degradation. A dielectric layer comprises dielectric ceramics containing BaTiO3 that is a main component; a first auxiliary component containing at least one element in a group consisting of Mg, Ca, Ba, Sr and Cr; a second auxiliary component containing SiO2; a third auxiliary component containing at least one element in a group consisting of V, Mo and W; and a fourth auxiliary component containing at least one element in a group consisting of Er, Tm, Yb, Y, Dy and Ho. Preferably, the rate of existence of crystal particles having voids in the dielectric ceramics is 10% or lower in terms of the count rate, and an average crystal particle diameter is more than 0.1 &mgr;m and not more than 0.7 &mgr;m. Thus, the lifetime of IR degradation is improved. Preferably, BaTiO3 powders synthesized by oxalate process or solid phase method and having a Ba/Ti ratio of more than 1 and less than 1.007 are used as a raw material.

25. 发明授权

US06544916B1 Manufacture method of dielectric ceramic composition 失效
标题翻译：电介质陶瓷组合物的制造方法
公开(公告)号：US06544916B1
公开(公告)日：2003-04-08
申请号：US09857413
申请日：2001-06-04
申请人： Shigeki Sato , Yoshihiro Terada , Yoshinori Fujikawa
发明人： Shigeki Sato , Yoshihiro Terada , Yoshinori Fujikawa
IPC分类号： C04B35468
CPC分类号： C04B35/4682 , H01G4/1227
摘要： A method of manufacturing a dielectric ceramic composition comprising at least BaTiO3 as a main component, a second subcomponent having SiO2 as a main component and at least one type selected from MO (note that M is at least one type of element selected from Ba, Ca, Sr and Mg), Li2O and B2O3 and other subcomponents, comprising the steps of mixing in the main component at least part of other subcomponents except for the second subcomponent to prepare a pre-calcination powder, calcining said pre-calcination powder to prepare a calcined powder, and mixing at least said second subcomponent in said calcined powder to obtain a dielectric ceramic composition having ratios of the subcomponents to BaTiO3 as the main component of predetermined molar ratios.
摘要翻译：一种制造包含至少BaTiO 3作为主要成分的电介质陶瓷组合物的方法，具有SiO 2作为主要成分的第二次要成分和选自MO的至少一种类型（注意，M是选自Ba，Ca中的至少一种元素，Sr和Mg），Li 2 O和B 2 O 3等副成分，包括以下步骤：在主成分中除了第二副成分以外的至少一部分其他副成分混合以制备预煅烧粉末，煅烧所述预煅烧粉末以制备煅烧粉末，并在所述煅烧粉末中混合至少所述第二次要组分，以获得具有作为主要组分的预定摩尔比的亚组分与BaTiO 3的比例的介电陶瓷组合物。

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