A composite bead element comprises a chip-like magnetic body in a shape of a nearly rectangular parellelepiped in which a recess is provided, at least one feed-through holes formed in said body and an electronic component inserted in said recess. Bead inductors are formed by conductors provided in said...http://www.google.com.au/patents/US4845452?utm_source=gb-gplus-sharePatent US4845452 - Composite bead element
