(19)

(11)

EP 2 553 500 A1

(12)

(43) Date of publication: 06.02.2013 Bulletin 2013/06 (21) Application number: 11763440.2 (22) Date of filing: 31.03.2011

(51) International Patent Classification (IPC):  G01W 1/00(2006.01) (86) International application number: PCT/US2011/030739 (87) International publication number: WO 2011/123653 (06.10.2011 Gazette 2011/40)

(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 RS SE SI SK SM TR (30) Priority: 31.03.2010 US 319490 P (71) Applicant: Earthtec Solutions LLC Vineland, NJ 08361 (US)	(72) Inventors: LANKFORD, David Vinceland, NJ 08361 (US) LICHTNER, JR., Francis, Thomas Newark, DE 19711 (US) (74) Representative: Walker, Stephen  Lincoln IP 9 Victoria Street Aberdeen Aberdeenshire AB10 1XB Aberdeen Aberdeenshire AB10 1XB (GB)