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(11)

EP 2 002 180 A2

(12)

(88) Date of publication A3: 21.02.2008 (43) Date of publication: 17.12.2008 Bulletin 2008/51 (21) Application number: 07754335.3 (22) Date of filing: 28.03.2007

(51) International Patent Classification (IPC):  F23C 5/00(2006.01) F23D 14/22(2006.01) F23L 7/00(2006.01) F23C 7/02(2006.01) F23D 14/32(2006.01) (86) International application number: PCT/US2007/007801 (87) International publication number: WO 2007/126980 (08.11.2007 Gazette 2007/45)

(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 MT NL PL PT RO SE SI SK TR (30) Priority: 03.04.2006 US 395141 (71) Applicant: PRAXAIR TECHNOLOGY, INC. Danbury, CT 06810-5113 (US)	(72) Inventors: ROSEN, Lee, Jonathan Buffalo, NY 14214 (US) RILEY, Michael, F. Greenwood, IN 46142 (US) BERMEL, Curtis, L. Sedalia, CO 80135-8215 (US) KOBAYASHI, Hisashi Putnam Valley, NY 10579 (US) (74) Representative: Schwan, Gerhard  Schwan Schwan Schorer Patentanwälte Bauerstrasse 22 80796 München 80796 München (DE)