(19)

(11)

EP 1 938 388 A2

(12)

(88) Date of publication A3: 21.12.2007 (43) Date of publication: 02.07.2008 Bulletin 2008/27 (21) Application number: 06815202.4 (22) Date of filing: 21.09.2006

(51) International Patent Classification (IPC):  H01L 31/00(2006.01) (86) International application number: PCT/US2006/037029 (87) International publication number: WO 2007/038297 (05.04.2007 Gazette 2007/14)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 23.09.2005 US 720084 P 13.10.2005 US 726520 P 21.09.2006 US 525562 (71) Applicant: Rust, Tom Oakland CA 94611 (US)	(72) Inventor: Rust, Tom Oakland CA 94611 (US) (74) Representative: Skone James, Robert Edmund  Gill Jennings & Every LLP Broadgate House 7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)