(19)

(11)

EP 0 766 766 A1

(12)

(43) Date of publication: 09.04.1997 Bulletin 1997/15 (21) Application number: 95922532.0 (22) Date of filing: 09.06.1995

(51) International Patent Classification (IPC):  E04B 1/ 74( . ) E04B 1/ 94( . ) E04B 1/ 10( . ) E04C 2/ 20( . ) (86) International application number: PCT/FI1995/000336 (87) International publication number: WO 1995/034721 (21.12.1995 Gazette 1996/02)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI NL PT SE Designated Extension States: LT LV (30) Priority: 10.06.1994 FI 19940002732 (71) Applicant: NESTE OY FIN-02150 Espoo (FI)	(72) Inventor: KARIMÄKI, Seppo FIN-38200 Vammala (FI) (74) Representative: Alho, Tapani  Neste Oy, Patent Services, P.O. Box 310 06101 Porvoo 06101 Porvoo (FI)