Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868228 | Grinding agent based upon neutralized acrylic polymers and/or copolymers for aqueous suspensions of coarse mineral materials for pigments applications | Georges Ravet, Jacky Rousset | 1989-09-19 |
| 4840985 | Grinding agent based and/or copolymers for aqueous suspension of coarse mineral materials for pigment applications | Georges Ravet, Jacky Rousset | 1989-06-20 |