(19)
(11) EP 1 028 828 A2

(12)

(88) Date of publication A3:
02.09.1999

(43) Date of publication:
23.08.2000 Bulletin 2000/34

(21) Application number: 98915449.7

(22) Date of filing: 09.04.1998
(51) International Patent Classification (IPC)7: B23Q 1/00
(86) International application number:
PCT/US9807/173
(87) International publication number:
WO 9925/516 (27.05.1999 Gazette 1999/21)
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 13.11.1997 US 969323

(71) Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY
St. Paul,Minnesota 55133-3427 (US)

(72) Inventors:
  • MILBRATH, Dean, S.
    Saint Paul, MN 55133-3427 (US)
  • GRENFELL, Mark, W.
    Saint Paul, MN 55133-3427 (US)

(74) Representative: Voortmans, Gilbert J.L. 
3M Europe S.A.,Hermeslaan 7
1831 Diegem
1831 Diegem (BE)

   


(54) METHODS OF WORKING METAL AND COMPOSITIONS USEFUL AS WORKING FLUIDS THEREFOR