Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5165477 | Enzymatic decomposition of drilling mud | Donald O. Hitzman | 1992-11-24 |
| 5126051 | Enzymatic decomposition of drilling mud | Donald O. Hitzman | 1992-06-30 |
| 4559149 | Workover fluid | — | 1985-12-17 |
| 4502969 | Workover and completion fluids | — | 1985-03-05 |
| 4221823 | Process for mounting palynological specimens | Michael B. Pearson, Sharon A. Meyer | 1980-09-09 |