Lead acid battery including a two-layer carbon foam current collector Grant US-8399134-B2 United States of America 19 Mar 2013
Battery having carbon foam current collector Grant US-7341806-B2 United States of America 11 Mar 2008
Composite material and current collector for battery Grant US-7033703-B2 United States of America 25 Apr 2006
Battery including carbon foam current collectors Grant US-6979513-B2 United States of America 27 Dec 2005