Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5909779 | Oil-based drilling fluids suitable for drilling in the presence of acidic gases | Arvind D. Patel, Jayanti Patel | 1999-06-08 |
| 4816551 | Oil based drilling fluids | Henry C. McLaurine, Charles K. Grantham | 1989-03-28 |