(19)

(11)

EP 0 558 669 A1

(12)

(43) Date of publication: 08.09.1993 Bulletin 1993/36 (21) Application number: 92902114.0 (22) Date of filing: 26.11.1991

(51) International Patent Classification (IPC):  F23D 14/ 18( . ) F23C 13/ 00( . ) F23C 6/ 04( . ) F23C 99/ 00( . ) (86) International application number: PCT/US1991/008917 (87) International publication number: WO 1992/009849 (11.06.1992 Gazette 1992/13)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 26.11.1990 US 19900617976 26.11.1990 US 19900617977 26.11.1990 US 19900617980 26.11.1990 US 19900618301 (71) Applicants: CATALYTICA, INC. Mountain View, CA 94043-5272 (US) TANAKA KIKINZOKU KOGYO KABUSHIKI KAISHA Hiratsuka-City, Kanagawa 254 (JP) DALLA BETTA, Ralph, A. Mountain View, CA 94040 (US)	(72) Inventors: TSURUMI, Kazunori Kanagawa 251 (JP) EZAWA, Nobuyasu Tokyo 135 (JP) SCHLATTER, James, C. Sunnyvale, CA 94087 (US) NICKOLAS, Sarento, G. Livermore, CA 94550 (US) (74) Representative: Goldin, Douglas Michael, et al  J.A. KEMP & CO. 14, South Square Gray's Inn London WC1R 5LX London WC1R 5LX (GB)