(19)

(11)

EP 2 235 755 A2

(12)

(88) Date of publication A3: 19.11.2009 (43) Date of publication: 06.10.2010 Bulletin 2010/40 (21) Application number: 09702762.7 (22) Date of filing: 21.01.2009

(51) International Patent Classification (IPC):  H01L 31/042(2006.01) (86) International application number: PCT/US2009/031597 (87) International publication number: WO 2009/092111 (23.07.2009 Gazette 2009/30)

(84) Designated Contracting States: 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 TR Designated Extension States: AL BA RS (30) Priority: 18.01.2008 US 22278 P 01.02.2008 US 25570 P 25.08.2008 US 91642 P 03.03.2008 US 3200 P 18.01.2008 US 22236 P 18.01.2008 US 22267 P 18.01.2008 US 22277 P 12.03.2008 US 35976 P 18.01.2008 US 22245 P 18.01.2008 US 22240 P 03.06.2008 US 58485 P 04.11.2008 US 111239 P 30.09.2008 US 101344 P 03.12.2008 US 119585 P (71) Applicant: Tenksolar, Inc Prior Lake, MN 55372 (US)

(72) Inventor: MEYER, Dallas, W. Prior Lake MN 55372 (US) (74) Representative: Lawrence, Richard Anthony et al Keltie Fleet Place House 2 Fleet Place London EC4M 7ET 2 Fleet Place London EC4M 7ET (GB)