(19)

(11)

EP 0 221 057 A1

(12)

(43) Date of publication: 13.05.1987 Bulletin 1987/20 (21) Application number: 85902839.0 (22) Date of filing: 17.05.1985

(51) International Patent Classification (IPC):  F17C 1/ 10( . ) B65D 83/ 00( . ) C01B 33/ 107( . ) C01G 30/ 00( . ) F17C 13/ 06( . ) B01J 19/ 02( . ) C01B 25/ 10( . ) C01G 28/ 00( . ) F17C 7/ 00( . ) H01L 21/ 306( . ) (86) International application number: PCT/US1985/000930 (87) International publication number: WO 1986/006705 (20.11.1986 Gazette 1986/25)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (71) Applicant: J.C. SCHUMACHER COMPANY Oceanside California 92054 (US)	(72) Inventors: HOWARD, Richard E. Escondido, CA 92025 (US) KEENE, Joseph, P. Oceanside, CA 92054 (US) (74) Representative: Abrams, Michael John  HASELTINE LAKE & CO. Hazlitt House 28 Southampton Buildings Chancery Lane London WC2A 1AT London WC2A 1AT (GB)