Inductor devices – Coil or coil turn supports or spacers – Printed circuit-type coil
Reexamination Certificate
2007-03-27
2007-03-27
Nguyen, Tuyen T. (Department: 2832)
Inductor devices
Coil or coil turn supports or spacers
Printed circuit-type coil
Reexamination Certificate
active
11232802
ABSTRACT:
A wire-wound type chip coil can take various inductance values while maintaining its outer dimension at a specific fixed value. A chip coil is formed by winding at least two conductive wires regularly in a single layer around a core made of a magnetic material and firmly connecting both ends of each conductive wire to terminal electrodes disposed on respective flanges of the core. This makes it possible to obtain a great current capacity. Furthermore, the inductance decreases because of an increase in the magnetic path length. A great number of different inductance values can be easily obtained by properly selecting parameters including the number of substantially parallel conductive wires, the diameter of each conductive wire, and the number of turns.
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Shinya Hirai et al., “Wire-Wound Type Chip Coil and Method of Adjusting a Characteristic Thereof”, U.S. Appl. No. 11/062,270, filed Feb. 18, 2005, currently pending.
Official Communication issued in the corresponding Japanese Application No. 2002-188441, dated Aug. 29, 2005. (with full English translation).
Hirai Shinya
Toi Takaomi
Tsubana Katsuhiko
Yasuzawa Hiroyuki
Keatng & Bennett, LLP
Murata Manufacturing Co. Ltd.
Nguyen Tuyen T.
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