(19)

(11)

EP 2 446 481 A2

(12)

(88) Date of publication A3: 31.03.2011 (43) Date of publication: 02.05.2012 Bulletin 2012/18 (21) Application number: 10792730.3 (22) Date of filing: 25.06.2010

(51) International Patent Classification (IPC):  H01L 31/042(2006.01) (86) International application number: PCT/US2010/040007 (87) International publication number: WO 2010/151777 (29.12.2010 Gazette 2010/52)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR (30) Priority: 25.06.2009 US 220539 P 24.06.2010 US 823006 (71) Applicant: Banyan, LLC Dallas, TX 75240 (US)	(72) Inventors: DEGENFELDER, Jeffrey, G. Coppell, TX 75019 (US) CARSTENS, David, W. Plano, TX 75093 (US) (74) Representative: Hernández, Yorck  Wittmann Hernandez Patent Attorneys Boschetsrieder Straße 67 81379 München 81379 München (DE)