Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835233 | Liquid polymerizable compositions for the production of substitutes for optical glasses | Franco Rivetti, Ugo Romano | 1989-05-30 |
| 4812545 | Process for the preparation of substitutes for optical glasses and polymerizable liquid composition suitable to that purpose | Franco Rivetti, Ugo Romano, Claudio Gagliardi | 1989-03-14 |