Patent ID: 7566506

Claim:
A magnetic body, comprising a plurality of laminated inner layers and an insulating enclosure fully enclosing said inner layers therein; said inner layers including a plurality of metal layers, a plurality of insulting layers, a plurality of filter layers, and a plurality of fabric material layers; said magnetic body being characterized in that each of said plurality of metal layers being formed by coating a specific electrically conductive metal element with vapor deposition on an entire surface of an insulating body to provide a negative charge thereof; that said insulating layers being made of an insulating substance; said filter layers being formed of a mesh structure woven from an insulating material; and a first of said plurality of metal layers being located at a center of said magnetic body and formed with said conductive metal being indium, and each of an upper and a lower side of said central metal layer being laminated with a respective first of said insulating layers; each of said first insulating layers being overlaid by a respective second of said plurality of said metal layers each second metal layer being formed with said conductive metal being silver; each of said second metal layers being overlaid by a respective one of said filter layers, each of said filter layers being overlaid by a respective second of said insulating layers; each of said second insulating layers being overlaid by a respective third of said plurality metal layers, each third metal layer being formed with said conductive metal being aluminum; each of said third metal layers being overlaid by a respective one of said fabric material layers such that said plurality of metal layers are electrically isolated from one another by said insulating layers to avoid neutralization of negative charges of said metal layers by external positive charges.