Issued Patents 1989
Showing 1–3 of 3 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 | Olivier Gonnet, Georges Ravet | 1989-09-19 |
| 4857622 | Scale and settlement inhibiting agent for use in treating industrial and/or household water | Hubert Bousquet, Georges Ravet | 1989-08-15 |
| 4840985 | Grinding agent based and/or copolymers for aqueous suspension of coarse mineral materials for pigment applications | Olivier Gonnet, Georges Ravet | 1989-06-20 |