Nice find, DD! Puthussery associated Patents: Method To Synthesize Colloidal Iron Pyrite (FeS2) Nanocrystals And Fabricate Iron Pyrite Thin Film Solar Cells US 20110240108 https://www.google.com/patents/US20110240108?dq=james+puthussery&hl=en&sa=X&ei=doteVMS4GI-xyASroYHADg&ved=0CBsQ6AEwA Iron pyrite thin films from molecular inks US 20140205756 https://www.google.com/patents/US20140205756?dq=james+puthussery&hl=en&sa=X&ei=doteVMS4GI-xyASroYHADg&ved=0CCIQ6AEwAQ