Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5007480 | Use of manganese oxide in drilling mud and oil well cement slurries | — | 1991-04-16 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5007480 | Use of manganese oxide in drilling mud and oil well cement slurries | — | 1991-04-16 |