Inductor devices – Coil or coil turn supports or spacers – Printed circuit-type coil
Reexamination Certificate
2011-08-23
2011-08-23
Mai, Anh T (Department: 2832)
Inductor devices
Coil or coil turn supports or spacers
Printed circuit-type coil
C336S223000, C336S232000, C336S233000, C336S234000, C428S692100, C252S062600, C252S062620
Reexamination Certificate
active
08004381
ABSTRACT:
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.
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Chinese Office Action dated Dec. 6, 2010.
Katayama Yasuhisa
Tachibana Takeshi
Umeno Tohru
Hitachi Metals Ltd.
Lian Mangtin
Mai Anh T
Sughrue & Mion, PLLC
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