Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6821931 | Water-based drilling fluid additive containing talc and carrier | — | 2004-11-23 |
| 6774089 | Water-based drilling fluid additive containing talc and cellulose | — | 2004-08-10 |
| 6737384 | Drilling fluid additive system containing talc and cellulose | — | 2004-05-18 |
| 6734145 | Drilling fluid additive system containing talc & carrier | — | 2004-05-11 |