Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5350786 | Process of (co)polymerization of .alpha.-olefins in the presence of stabilizers | Silvestro Costanzi, Luciano Pallini | 1994-09-27 |
| 5270470 | Process for the synthesis of allylated derivatives of 2,2,6,6-tetraalkylpiperidinols | Silvestro Costanzi, Luciano Pallini | 1993-12-14 |
| 5051458 | UV stabilizers for organic polymers | Silvestro Costanzi, Luigi Cassar, Carlo Bosetto, Carlo Neri | 1991-09-24 |
| 4946880 | Silylated U.V. stabilizers containing hindered tertiary amines | Silvestro Costanzi, Omero Zavattini, deceased, by Clara Pungiluppi, heir, by Renato Zavattini, heir, Luciano Pallini | 1990-08-07 |
| 4935063 | Fillers and pigments possessing organic polymer stabilizing properties and a process for their preparation | Silvestro Costanzi, Omero Zavattini, deceased, Ugo Bersellini | 1990-06-19 |
| 4898946 | Process for the preparation of N-allyl-piperidine derivatives | Silvestro Costanzi, Luciano Pallini | 1990-02-06 |
| 4617333 | Stabilized polyolefinic compositions and stabilizer compounds suitable to that purpose | Silvestro Costanzi, Enrico Traverso, Roberto Podesta, Carlo Busetto | 1986-10-14 |