Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11542607 | Process for the rapid blackening of surgical needles | Duan Li Ou, Christophe Vailhe | 2023-01-03 |
| 10364501 | Process for the rapid blackening of surgical needles | Duan Li Ou, Christophe Vailhe | 2019-07-30 |