(19)

(11)

EP 0 828 959 A1

(12)

(43) Date of publication: 18.03.1998 Bulletin 1998/12 (21) Application number: 95936130.0 (22) Date of filing: 30.10.1995

(51) International Patent Classification (IPC):  F16K 7/ 16( . ) F16K 11/ 078( . ) F16K 11/ 02( . ) (86) International application number: PCT/NL1995/000373 (87) International publication number: WO 1996/014529 (17.05.1996 Gazette 1996/22)

(84) Designated Contracting States: DE FR GB NL (30) Priority: 07.11.1994 NL 19940001848 (71) Applicant: DSM N.V. 6411 TE Heerlen (NL)	(72) Inventors: BAARS, Robertus, Thimoteus NL-2152 NB Nieuw Vennep (NL) VAN DEN BERG, Martinus, Hubertus, Nicolaas NL-6221 CA Maastricht (NL)