May 22, 2002 [SolarAccess.com] Avista Labs, has been awarded a patent further protecting its claims of modularity in fuel cell system construction. The company builds PEM fuel cell systems using a modular approach. This new patent is the fifth issued to Avista Labs. It includes 300 claims covering certain basic control and balance-of-plant systems when used in a modular or multiple fuel cell system. The company has 22 additional patents pending.