Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10876027 | Method for making and using a drilling fluid | Stefan Alexandru Stoian | 2020-12-29 |
| 10738229 | Drilling fluid and method for drilling in coal-containing formations | Stefan Alexandru Stoian | 2020-08-11 |