An electrochromic element comprises a first substrate having a first surface and a second surface opposite the first surface, a second substrate in spaced-apart relationship to the first substrate and having a third surface facing the second surface and a fourth surface opposite the third surface, and...http://www.google.es/patents/US7830583?utm_source=gb-gplus-sharePatente US7830583 - Electro-optical element including IMI coatings
