Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11072722 | Pencil lead | Frédéric Claptien, Philippe Lefebvre, Christelle Debrauwer | 2021-07-27 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11072722 | Pencil lead | Frédéric Claptien, Philippe Lefebvre, Christelle Debrauwer | 2021-07-27 |