Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6832655 | Method for cleaning gravel packs | John Ravensbergen, John Misselbrook | 2004-12-21 |
| 6772847 | Chemically enhanced drilling methods | Philip Rae, Gino F. Di Lullo Arias | 2004-08-10 |