Dan has been granted 13 United States Patents. Three noteworthy patents are "Aluminum Alloy Back Junction Solar Cell and a Process for Fabrication Thereof" (US Patent 6,262,359), "Method for Stabilizing Dendritic Web Crystal Growth" (US Patent 6,626,993), and "Method for Self-Doping Contacts to a Semiconductor" (US Patent 6,632,730) given below.

US Patent 6,262,359

US Patent 6,626,993

US Patent 6,632,730                       

Click here for a complete list of patents.