Advertisements in an end-user controlled playback environment Grant US-7647609-B2 United States of America 12 Jan 2010
Sulfonated conducting polymer-grafted carbon material for fuel cell applications Grant US-7413683-B2 United States of America 19 Aug 2008
Sulfonated conducting polymer-grafted carbon material for fuel cell applications Grant US-7390441-B2 United States of America 24 Jun 2008