Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4393218 | 2,2,4,5,5-Pentamethyl-3-formyl-.DELTA..sup.3 -pyrroline and the preparation thereof | Silvestro Costanzi, Maurizio Brunelli | 1983-07-12 |
| 4346188 | Polyolefin compositions stabilized against UV-radiations by pyrrolidine derivatives | Silvestro Costanzi, Adriano Ballabio, Maurizio Brunelli | 1982-08-24 |
| 4325864 | Pyrrolidine-ring-containing compositions for use as anti-UV stabilizers in plastics materials | Silvestro Costanzi, Adriano Ballabio | 1982-04-20 |
| 4321190 | Polyolefin compositions stabilized against UV light radiations with open-chain hindered amines | Silvestro Costanzi, Adriano Ballabio, Tito Salvatori | 1982-03-23 |