Laminated coil component and method of producing the same

Details Laminated coil component and method of producing the same Laminated coil component and method of producing the same

2007-01-23

2007-01-23

Mai, Anh (Department: 2832)

Inductor devices

Coil or coil turn supports or spacers

Printed circuit-type coil

C336S232000, C336S223000, C029S602100

Reexamination Certificate

active

10527036

ABSTRACT:
A laminated coil is constructed such that an inner space of each via hole can be increased while the spacing between adjacent via holes in the axial direction of a coil is prevented from being narrowed. In the via holes of the laminated coil, through-holes formed in ceramic layers and filled with a conductor are arranged in a row in the lamination direction X, and, in each of the through-holes, the difference between the diameter in the axial direction of the coil on the opening surface of one opening of a ceramic layer and the diameter in the axial direction of the coil on the opening surface of the other opening is smaller than the difference between the diameter in the direction Z that is substantially perpendicular to the axial direction Y of the coil on the opening surface of one opening of the ceramic layer and the diameter in the direction Z that is substantially perpendicular to the axial direction Y of the coil on the opening surface of the other opening.

REFERENCES:
patent: 5404118 (1995-04-01), Okamura et al.
patent: 5985414 (1999-11-01), Fukuda et al.
patent: 6249205 (2001-06-01), Meadors et al.
patent: 6304164 (2001-10-01), Ohno et al.
patent: 6407343 (2002-06-01), Tanaka
patent: 61-96548 (1986-06-01), None
patent: 9-92753 (1997-04-01), None
patent: 2000-150241 (2000-05-01), None
patent: 2002-252117 (2002-09-01), None
patent: 2003-17325 (2003-01-01), None

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