Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4530402 | Low density spacer fluid | Robert C. Smith | 1985-07-23 |
| 4441556 | Diverter tool and its use | Charles A. Powers | 1984-04-10 |
| 4370166 | Low density cement slurry and its use | Charles A. Powers, Robert C. Smith | 1983-01-25 |
| 4305758 | Low density cement slurry and its use | Charles A. Powers, Robert C. Smith | 1981-12-15 |
| 4252193 | Low density cement slurry and its use | Charles A. Powers, Robert C. Smith | 1981-02-24 |