Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12054001 | Process for the production of an impregnated wood piece, impregnated wood piece obtainable by such a process and pencil having a sheath made of such an impregnated wood piece | Felipe Zatt Schardosin, Tatiane de Mattos AMADIO, Gerhard Lugert | 2024-08-06 |
| 12006443 | Core or crayon for writing and/or coloring | Eder D. J. Merola, Gerhard Lugert | 2024-06-11 |
| 10711151 | Colored lead or colored chalk, pencil containing a colored lead, and process for preparing a colored lead or colored chalk | Eder D. J. Merola, Marcel Prado Atassio, Reiner Appel, Gerhard Lugert | 2020-07-14 |