(19)

(11)

EP 2 429 921 A1

(12)

(43) Date of publication: 21.03.2012 Bulletin 2012/12 (21) Application number: 10775576.1 (22) Date of filing: 13.05.2010

(51) International Patent Classification (IPC):  B65D 81/38(2006.01) (86) International application number: PCT/US2010/034817 (87) International publication number: WO 2010/132726 (18.11.2010 Gazette 2010/46)

(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: 13.05.2009 US 177998 P (71) Applicant: Entropy Solutions, Inc. Minneapolis, MN 55344 (US)	(72) Inventors: WILLIAMS, Preston, Noel Minneapolis MN 55423 (US) HILLMANN, Arnold, Charles Prior Lake MN 55372 (US) (74) Representative: Spencer, Michael David et al Bromhead Johnson 19 Buckingham Street London WC2N 6EF London WC2N 6EF (GB)