Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871460 | Isolation/purification of isocyanate condensates by extraction with liquid or supercritical gas | Jean-Pierre Robin | 1989-10-03 |
| 4871828 | Purification/isolation of isocyanate condensates | Gerard Collas, Jean-Pierre Robin, Ferenc Sagi | 1989-10-03 |
| 4864025 | Substantially pure isocyanurate/polyisocyanates | Jean-Pierre Robin | 1989-09-05 |