公开(公告)号：EP2112126A1

公开(公告)日：2009-10-28

申请号：EP08710864.3

申请日：2008-02-06

申请人： Hitachi Metals, Ltd.

发明人： TANAKA, Satoru ,  TACHIBANA, Takeshi

IPC分类号： C04B35/30 ,  H01F1/34 ,  H01F27/255

CPC分类号： H01F17/0013 ,  C04B35/265 ,  C04B35/6262 ,  C04B35/62645 ,  C04B2235/3208 ,  C04B2235/3263 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3293 ,  C04B2235/3298 ,  C04B2235/3418 ,  C04B2235/5409 ,  C04B2235/724 ,  C04B2235/725 ,  C04B2235/726 ,  C04B2235/727 ,  C04B2235/77 ,  C04B2235/785 ,  C04B2235/786 ,  C04B2235/94 ,  H01F1/344 ,  H01F41/0246 ,  H01F41/046 ,  H01F2017/048

摘要： Low-loss ferrite comprising 100% by mass of main components comprising 47.1-49.3% by mol of Fe 2 O 3 , 20-26% by mol of ZnO, and 6-14% by mol of CuO, the balance being NiO, and 0.1-2% by mass (as SnO 2 ) of Sn and 0.05-2% by mass (as Mn 3 O 4 ) of Mn, and having an average crystal grain size of 0.5-3 µm.

摘要翻译： 包含100质量％的主要成分的低损耗铁氧体，包含47.1〜49.3摩尔％的Fe 2 O 3，20-26摩尔％的ZnO和6〜14摩尔％的CuO，余量为NiO， Sn为0.1〜2质量％（SnO 2），Mn为0.05〜2质量％（Mn 3 O 4），平均结晶粒径为0.5〜3μm。

公开(公告)号：EP2234126B1

公开(公告)日：2019-09-04

申请号：EP08864971.0

申请日：2008-12-25

申请人： Hitachi Metals, Ltd.

发明人： TACHIBANA, Takeshi ,  TANAKA, Satoru

IPC分类号： C04B35/26 ,  H01F1/34 ,  H01F17/00 ,  C04B35/626 ,  H01F17/04 ,  H01F41/04

公开(公告)号：EP2234126A1

公开(公告)日：2010-09-29

申请号：EP08864971.0

申请日：2008-12-25

申请人： Hitachi Metals, Ltd.

发明人： TACHIBANA, Takeshi ,  TANAKA, Satoru

IPC分类号： H01F17/04 ,  C04B35/26 ,  C04B35/30 ,  H01F1/34 ,  H01F17/00 ,  H01F30/00 ,  H02M3/155

CPC分类号： H01F1/344 ,  C04B35/265 ,  C04B35/6262 ,  C04B2235/3262 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3293 ,  C04B2235/5409 ,  H01F17/0013 ,  H01F17/04 ,  H01F41/046

摘要： A multilayer inductor comprising a coil embedded in a magnetic portion, and a magnetic gap formed by a non-magnetic portion in part of a magnetic path, the magnetic portion being made of Ni ferrite, whose relative temperature coefficient αµ ir of initial permeability at a frequency of 1 MHz is more than +10 ppm/°C and +40 ppm/°C or less between -40°C and +80°C, the non-magnetic portion being made of Zn ferrite containing more Zn than in the magnetic portion and having a Curie temperature Tc of -50°C or lower, and the Zn content changing continuously in boundary regions between the non-magnetic portion and the magnetic portion, whereby the thickness of the magnetic gap changes with the temperature.

公开(公告)号：EP2040272A1

公开(公告)日：2009-03-25

申请号：EP07768249.0

申请日：2007-07-05

申请人： Hitachi Metals, Ltd.

发明人： KATAYAMA, Yasuhisa ,  UMENO, Tohru ,  TACHIBANA, Takeshi

IPC分类号： H01F17/00

CPC分类号： H01F17/0013 ,  B32B18/00 ,  C04B35/265 ,  C04B2235/3208 ,  C04B2235/3232 ,  C04B2235/3239 ,  C04B2235/3251 ,  C04B2235/3274 ,  C04B2235/3277 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3293 ,  C04B2235/3298 ,  C04B2235/3418 ,  C04B2235/5409 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/6025 ,  C04B2235/72 ,  C04B2237/34 ,  C04B2237/341 ,  C04B2237/343 ,  C04B2237/348 ,  C04B2237/704 ,  H01F3/14 ,  H01F41/046

摘要： A laminated device comprising pluralities of magnetic ferrite layers, conductor patterns each formed on each magnetic ferrite layer and connected in a lamination direction to form a coil, and a non-magnetic ceramic layer formed on at least one magnetic ferrite layer such that it overlaps the conductor patterns in a lamination direction, the non-magnetic ceramic layer comprising as main components non-magnetic ceramics having higher sintering temperatures than that of the magnetic ferrite, and further one or more of Cu, Zn and Bi in the form of an oxide.

公开(公告)号：EP2141137B1

公开(公告)日：2017-08-09

申请号：EP08751861.9

申请日：2008-04-16

申请人： Hitachi Metals, Ltd.

发明人： TANAKA, Satoru ,  TACHIBANA, Takeshi

IPC分类号： C04B35/30 ,  H01F1/34 ,  H01F17/00 ,  H01F17/04

CPC分类号： C04B35/265 ,  C04B2235/3208 ,  C04B2235/3239 ,  C04B2235/3263 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3293 ,  C04B2235/3298 ,  C04B2235/5409 ,  C04B2235/72 ,  C04B2235/724 ,  C04B2235/726 ,  C04B2235/727 ,  C04B2235/785 ,  C04B2235/786 ,  H01F1/344 ,  H01F17/0013 ,  H01F17/04 ,  H01F2017/0066

公开(公告)号：EP2112126B1

公开(公告)日：2013-10-16

申请号：EP08710864.3

申请日：2008-02-06

申请人： Hitachi Metals, Ltd.

发明人： TANAKA, Satoru ,  TACHIBANA, Takeshi

IPC分类号： C04B35/30 ,  H01F1/34 ,  H01F27/255 ,  C04B35/26

CPC分类号： H01F17/0013 ,  C04B35/265 ,  C04B35/6262 ,  C04B35/62645 ,  C04B2235/3208 ,  C04B2235/3263 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3293 ,  C04B2235/3298 ,  C04B2235/3418 ,  C04B2235/5409 ,  C04B2235/724 ,  C04B2235/725 ,  C04B2235/726 ,  C04B2235/727 ,  C04B2235/77 ,  C04B2235/785 ,  C04B2235/786 ,  C04B2235/94 ,  H01F1/344 ,  H01F41/0246 ,  H01F41/046 ,  H01F2017/048

公开(公告)号：EP2141137A1

公开(公告)日：2010-01-06

申请号：EP08751861.9

申请日：2008-04-16

申请人： Hitachi Metals, Ltd.

发明人： TANAKA, Satoru ,  TACHIBANA, Takeshi

IPC分类号： C04B35/30 ,  H01F1/34 ,  H01F17/04

CPC分类号： C04B35/265 ,  C04B2235/3208 ,  C04B2235/3239 ,  C04B2235/3263 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3293 ,  C04B2235/3298 ,  C04B2235/5409 ,  C04B2235/72 ,  C04B2235/724 ,  C04B2235/726 ,  C04B2235/727 ,  C04B2235/785 ,  C04B2235/786 ,  H01F1/344 ,  H01F17/0013 ,  H01F17/04 ,  H01F2017/0066

摘要： A low-loss ferrite comprising as main components 46.5-49.5% by mol of Fe 2 O 3 , 17-26% by mol of ZnO, 4-12% by mol of CuO, and 0.2% or more and less than 1.2% by mol of CoO, the balance being NiO, and 0.03-1.4% by mass (as SnO 2 ) of Sn based on 100% by mass of the main components, and having an average crystal grain size of 0.7-2.5 µm, and an electronic device obtained by integrally sintering pluralities of layers of this low-loss ferrite and coil-shaped electrodes formed in the laminate.