(19)

(11)

EP 0 084 059 A1

(12)

(43) Date of publication: 27.07.1983 Bulletin 1983/30 (21) Application number: 82902609.0 (22) Date of filing: 22.07.1982

(51) International Patent Classification (IPC):  C04B 35/ 52( . ) C25C 3/ 08( . ) C04B 35/ 58( . ) (86) International application number: PCT/US1982/001003 (87) International publication number: WO 1983/000347 (03.02.1983 Gazette 1983/04)

(84) Designated Contracting States: AT BE CH DE FR GB LI SE (30) Priority: 27.07.1981 US 19810287124 27.07.1981 US 19810287129 (71) Applicant: GREAT LAKES CARBON CORPORATION New York, NY 10171 (US)	(72) Inventors: JOO, Louis Arpad Johnson City, TN 37601 (US) TUCKER, Kenneth Wayne Elizabethton, TN 37643 (US) WEBB, Scott David Greenville, MS 38701 (US) JUEL, Leslie Harrisville Johnson City, TN 37601 (US) McCOWN, Frank Edward, Jr. Bristol, TN 37620 (US) (74) Representative: Baillie, Iain Cameron, et al  c/o Ladas & Parry Altheimer Eck 2 D-80331 München D-80331 München (DE)