| http://www.w3.org/ns/prov#value | - Apple Inc., AAPL -0.39% Saab AB SAAB-B.SK -0.08% and Lockheed Martin Corp. LMT +1.85% have recently sought or received patents to use graphene.Graphene is the same sort of material, like steel or plastic or silicon that can really change society, says Dr. Ferrari, who leads a band of about 40 graphene researchers at Cambridge.Graphene faces hurdles.
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