Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842651 | Agent for pre-treatment of rough mineral materials for pigmentary applications | Georges Ravet, Catherine Bonnet | 1989-06-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842651 | Agent for pre-treatment of rough mineral materials for pigmentary applications | Georges Ravet, Catherine Bonnet | 1989-06-27 |