GRAFCELL® fuel cell components and materials are covered by one or more of the following US patents: 5,846,459; 5,885,728; 5,902,762; 5,976,727; 5,990,027; 6,087,034; 6,254,993; 6,413,663; 6,413,671; 6,432,336; 6,468,686; 6,479,182; 6,503,652; 6,506,484; 6,517,964; 6,521,369; 6,528,199; 6,548,156; 6,582,846; 6,604,457; 6,605,379; 6,613,252; 6,620,506; 6,663,807; 6,673,284; 6,673,289; 6,702,970; 6,706,400; 6,716,381; 6,841,248; 6,841,387; 7,108,917. Other US and foreign patents granted or pending.