A shielded substrate assembly that contains a magnetic shield with a layer of magnetic shielding material; the magnetic shield has a magnetic shielding factor of at least about 0.5. The magnetic shield contains nanomagnetic material nanomagnetic material with a mass density of at least about 0.01 grams...http://www.google.fr/patents/US6864418?utm_source=gb-gplus-shareBrevet US6864418 - Nanomagnetically shielded substrate
