(19)

(11)

EP 0 701 472 A1

(12)

(43) Date of publication: 20.03.1996 Bulletin 1996/12 (21) Application number: 94921385.0 (22) Date of filing: 24.06.1994

(51) International Patent Classification (IPC):  B01D 71/ 02( . ) B01D 67/ 00( . ) B22F 3/ 11( . ) C04B 35/ 56( . ) C04B 35/ 58( . ) C04B 35/ 65( . ) C04B 38/ 06( . ) C04B 41/ 85( . ) B01D 39/ 20( . ) B01D 69/ 00( . ) C04B 35/ 117( . ) C04B 35/ 565( . ) C04B 35/ 63( . ) C04B 38/ 00( . ) C04B 41/ 50( . ) C04B 41/ 87( . ) (86) International application number: PCT/US1994/007188 (87) International publication number: WO 1996/000125 (04.01.1996 Gazette 1996/02)

(84) Designated Contracting States: CH DE GB LI SE (71) Applicant: MICROPYRETICS HEATERS INTERNATIONAL Cincinnati, OH 45208 (US)	(72) Inventors: SEKHAR, Jainagesh Akkaraju Cincinnati, Ohio 45208 (US) LIU, James J. Cincinnati, Ohio 45220 (US) ZHU, Naiping Cincinnati, Ohio 45220 (US) (74) Representative: Hedley, Nicholas James Matthew  Stephenson Harwood One, St. Paul's Churchyard London EC4M 8SH London EC4M 8SH (GB)