(19)

(11)

EP 1 680 639 A1

(12)

(43) Date of publication: 19.07.2006 Bulletin 2006/29 (21) Application number: 04784508.6 (22) Date of filing: 20.09.2004

(51) International Patent Classification (IPC):  F28D 9/00(1968.09) F28F 21/06(1968.09) F28F 3/04(1968.09) (86) International application number: PCT/US2004/030660 (87) International publication number: WO 2005/028983 (31.03.2005 Gazette 2005/13)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 19.09.2003 US 504138 P 17.09.2004 US 944374 17.09.2004 US 944317 17.09.2004 US 944071 (71) Applicant: The Texas A & M Univsersity System College Station, TX 77843 (US)	(72) Inventor: HOLTZAPPLE, Mark, T. College Station, TX 77840-4859 (US) (74) Representative: Lawrence, John  Barker Brettell, 138 Hagley Road, Edgbaston Birmingham B16 9PW Birmingham B16 9PW (GB)