(19)

(11)

EP 0 784 528 A1

(12)

(43) Date of publication: 23.07.1997 Bulletin 1997/30 (21) Application number: 95935734.0 (22) Date of filing: 06.10.1995

(51) International Patent Classification (IPC):  B24D 3/ 34( . ) B24D 11/ 00( . ) (86) International application number: PCT/US1995/012924 (87) International publication number: WO 1996/011085 (18.04.1996 Gazette 1996/17)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 07.10.1994 JP 19940270427 (71) Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY St. Paul, Minnesota 55133-3427 (US)	(72) Inventors: HAGIWARA, Hironori Machida-City, Tokyo 194 (JP) YAMATO, Ikuko Chigasaki-City, Kanagawa Pref. 253 (JP) (74) Representative: Warcoin, Jacques, et al  Cabinet Régimbeau, 26, avenue Kléber 75116 Paris 75116 Paris (FR)