Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883893 | Process for the continuous production of phtalodinitrile | Enrico Pontoglio, Sandro Parodi | 1989-11-28 |
| 4883894 | Process for the production in continuous of phthalodinitrile | Enrico Pontoglio, Sandro Parodi | 1989-11-28 |
| 4806672 | Process for the continuous production of isophthalodinitrile | Enrico Pontoglio, Sandro Parodi, Giordano Donelli | 1989-02-21 |