| (84) |
Designated Contracting States: |
|
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT |
|
Designated Extension States: |
|
AL LT LV MK RO SI |
| (30) |
Priority: |
12.11.1999 US 165393 P
|
| (71) |
Applicant: M-I L.L.C. |
|
Houston, TX 77072 (US) |
|
| (72) |
Inventors: |
|
- FREEMAN, Michael, A.
Kingwood, TX 77345 (US)
- JIANG, Ping
N-3400 Sandnes (NO)
- NORMAN, Monica
Houston, TX 77041 (US)
- SYMES, Kenneth, C.
Bradford, Yorkshire BD14 6LR (GB)
- MISTRY, Kishor K.
Keighley,East Moton, BD20 5UU (GB)
- BALLARD, David, A.
Aberdeenshire,Stohehaven, AB39 3PQ (GB)
|
| (74) |
Representative: Raynor, John |
|
W.H. Beck, Greener & Co7 Stone BuildingsLincoln's Inn
London WC2A 3SZ
London WC2A 3SZ (GB) |
|
