Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5652364 | Process for the preparation of 2,2,6,6-tetramethyl-4-piperidyloxy-1,3,5-triazines with two or more triazine rings | Graziano Vignali, Fabrizio Guizzardi, Graziano Zagnoni | 1997-07-29 |
| 5610211 | 2,2,6,6-tetramethylpiperidine derivatives for use as stabilizing agents for organic materials | Valerio Borzatta | 1997-03-11 |
| 5496875 | Derivatives of 2,2,6,6-tetramethyl-4-piperidinol for use as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials | Valerio Borzatta, Primo Carrozza | 1996-03-05 |
| 5457199 | Piperidine compounds for use as stabilizers for organic materials | Graziano Zagnoni | 1995-10-10 |
| 5457143 | Stabilization of polymeric organic materials by using synergistic mixtures comprising sterically hindered cyclic amines and derivatives of 3-pyrazolidinone or 1,2,4-triazolidine-3,5-dione | Giampiero Vessa | 1995-10-10 |
| 5439958 | Polyalkyl-4-piperidinol derivatives for use as stabilizers for organic materials | Graziano Zagnoni, Michael Ackerman, James P. Galbo, Roland A. E. Winter | 1995-08-08 |
| 5416216 | Tetramethylpiperidine compounds for use as stabilizers for organic materials | Graziano Zagnoni | 1995-05-16 |
| 5387687 | Piperidine compounds a tetrahydrofuran ring for use as stabilisers for organic material | Graziano Zagnoni | 1995-02-07 |
| 5336706 | Piperidine-triazine compounds for use as stabilizers for organic materials | Valerio Borzatta, Graziano Vignali | 1994-08-09 |
| 5268401 | Piperidine-triazine compounds for use as stabilizers for organic materials | — | 1993-12-07 |
| 5256787 | Tri-piperdine compounds as stabilizers for organic materials | Valerio Borzatta, Graziano Vignali | 1993-10-26 |
| 5210118 | Method for stabilizing synthetic thermoplastic materials against thermal degradation | — | 1993-05-11 |
| 5196465 | Polymeric thermoplastic materials, comprising 1,2,4-triazolidine-3,5-dione derivatives as stabilizers | Graziano Zagnoni, Valerio Borzatta | 1993-03-23 |
| 5187275 | Piperidine-triazine compounds | Valerio Borzatta, Graziano Vignali | 1993-02-16 |