Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7108072 | Lubrication and self-cleaning system for expansion mandrel | Robert Lance Cook, David Paul Brisco, R. Bruce Stewart, Lev Ring, James J. W. Nahm +4 more | 2006-09-19 |
| 7048067 | Wellbore casing repair | Robert Lance Cook, David Paul Brisco, R. Bruce Stewart, Lev Ring, James Jang Woo Nahm +6 more | 2006-05-23 |
| 6557640 | Lubrication and self-cleaning system for expansion mandrel | Robert Lance Cook, David Paul Brisco, R. Bruce Stewart, Lev Ring, James J. W. Nahm +4 more | 2003-05-06 |
| 6085839 | Method of thermally insulating a wellbore | James J. W. Nahm | 2000-07-11 |
| 5488991 | Alumina wellbore cement composition | Kenneth M. Cowan, James J. W. Nahm, Robert N. Romero | 1996-02-06 |
| 5476144 | Conversion of oil-base mud to oil mud-cement | James J. W. Nahm | 1995-12-19 |
| 5382290 | Conversion of oil-base mud to oil mud-cement | James J. W. Nahm | 1995-01-17 |
| 5335725 | Wellbore cementing method | — | 1994-08-09 |
| 5333690 | Cementing with blast furnace slag using spacer | James J. W. Nahm | 1994-08-02 |
| 5330006 | Oil mud displacement with blast furnace slag/surfactant | James J. W. Nahm, Kenneth M. Cowan | 1994-07-19 |
| 5316083 | Blast furnace slag spacer | James J. W. Nahm | 1994-05-31 |
| 5309997 | Well fluid for in-situ borehole repair | James J. W. Nahm | 1994-05-10 |
| 5226961 | High temperature wellbore cement slurry | James J. W. Nahm, Harold J. Vinegar, John Michael Karanikas | 1993-07-13 |
| 5213160 | Method for conversion of oil-base mud to oil mud-cement | James J. W. Nahm | 1993-05-25 |