(19)

(11)

EP 1 538 899 A2

(12)

(88) Date of publication A3: 05.08.2004 (43) Date of publication: 15.06.2005 Bulletin 2005/24 (21) Application number: 03766985.0 (22) Date of filing: 31.07.2003

(51) International Patent Classification (IPC)7: A01N 33/22 (86) International application number: PCT/US2003/023823 (87) International publication number: WO 2004/013286 (12.02.2004 Gazette 2004/07)

(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 PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 01.08.2002 US 399716 P 06.05.2003 US 429974 (71) Applicant: LTA Resource Management Portland, TX 78374 (US)	(72) Inventor: LACKEY, James Taft, TX 78390 (US) (74) Representative: Eisenführ, Speiser & Partner  Patentanwälte RechtsanwältePostfach 10 60 78 28060 Bremen 28060 Bremen (DE)