Issued Patents All Time
Showing 26–50 of 55 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6271377 | Hydroxy-substituted N-alkoxy hindered amines and compositions stabilized therewith | Gerald A. Capocci, Nancy Cliff, Robert Detlefsen, Michael P. DiFazio, Ramanathan Ravichandran +1 more | 2001-08-07 |
| 6265473 | Block oligomers containing 1-hydrocarbyloxy-2,2,6,6-tetramethyl-4-piperidyl groups as stabilizers for organic materials | Nicola Lelli, Valerio Borzatta, Jean-Pierre Wolf, Michael Ackerman, Piero Piccinelli | 2001-07-24 |
| 6177491 | Block oligomers containing 1-Hydrocarbyloxy-2,2,6,6-Tetramethyl-4-piperidyl groups as stabilizers for organic materials | Dario Lazzari, Fabrizio Guizzardi | 2001-01-23 |
| 6166212 | Process for the synthesis of N-(hydroxyalkoxy) substituted hindered amine stabilizers | Robert Detlefsen, Michael P. DiFazio, Henry C. Grace, Christopher Kuell | 2000-12-26 |
| 5844026 | N,N',N''-tris{2,4-bisHydrocarbyloxy-2,2,6,6-tetra- methylpiperidin-4-yl)alkylamino!-s-triazin-6-yl}-3,3'-ethylenediiminodipr opylamines, their isomers and bridged derivatives and polymer compositions stabilized therewith | Henry C. Grace, Douglas Horsey, Peter Solera, Rangarajan Srinivasan | 1998-12-01 |
| 5574162 | Non-migrating 1-hydrocarbyloxy hindered amine derivatives as polymer stabilizers | Ramanathan Ravichandran, Peter J. Schirmann, Andrew Mar | 1996-11-12 |
| 5442071 | Non-migrating 1-hydrocarbyloxy hindered amine derivatives as polymer stabilizers | Ramanathan Ravichandran, Peter J. Schirmann, Andrew Mar | 1995-08-15 |
| 5439958 | Polyalkyl-4-piperidinol derivatives for use as stabilizers for organic materials | Roberto Scrima, Graziano Zagnoni, Michael Ackerman, Roland A. E. Winter | 1995-08-08 |
| 5374729 | Process for preparing N-methoxy derivatives of 4-hydroxy-2,2,6,6-tetramethylpiperidine and 2,2,6,6-tetramethyl-4-piperidone | — | 1994-12-20 |
| 5359069 | Non-migrating 1-hydrocarbyloxy hindered amine derivatives as polymer stabilizers | Ramanathan Ravichandran, Peter J. Schirmann, Andrew Mar | 1994-10-25 |
| 5300544 | Non-migrating 1-hydrocarbyloxy-2,2,6,6-tetramethylpiperdine 1,3,5-triazine derivatives as polymer stabilizers | Ramanathan Ravichandran, Mark S. Holt | 1994-04-05 |
| 5300647 | O-carbonyl N-hydroxy hindered amine stabilizers | Roger F. Malherbe, Roland A. E. Winter | 1994-04-05 |
| 5286865 | Non-migrating 1-hydrocarbyloxy hindered amine derivatives as polymer stabilizers | Ramanathan Ravichandran, Peter J. Schirmann, Andrew Mar | 1994-02-15 |
| 5216156 | Non-migrating 1-hydrocarbyloxy-2,2,6,6-tetramethylpiperidine 1,3,5-triazine derivatives | Ramanathan Ravichandran, Mark S. Holt | 1993-06-01 |
| 5204473 | O-substituted N-hydroxy hindered amine stabilizers | Roland A. E. Winter, Raymond Seltzer | 1993-04-20 |
| 5189086 | Polysubstituted N-hydrocarbyloxy hindered amine light stabilizers | — | 1993-02-23 |
| 5145893 | Non-migrating 1-hydrocarbyloxy hindered amine derivatives as polymer stabilizers | Ramanathan Ravichandran, Peter J. Schirmann, Andrew Mar | 1992-09-08 |
| 5118736 | N,N-bis(1-hydrocarbyloxy-2,2,6,6-tetramethylpiperidin-4-yl)amino triazines and stabilized compositions | Ramanathan Ravichandran | 1992-06-02 |
| 5096950 | Polyolefin compositions stabilized with NOR-substituted hindered amines | Raymond Seltzer, Ramanathan Ravichandran, Ambelal R. Patel | 1992-03-17 |
| 5021478 | Compounds containing both UV-absorber and 1-hydrocarbyloxy hindered amine moieties and stabilized compositions | Ramanathan Ravichandran | 1991-06-04 |
| 5021577 | Polysubstituted n-hydrocarbyloxy hindered amine light stabilizers | — | 1991-06-04 |
| 5021486 | Hindered amine-substituted malonic acid derivatives of s-triazine | — | 1991-06-04 |
| 5021483 | Hindered amine derivatives of S-triazine-tricarboxylic acid | — | 1991-06-04 |
| 5021481 | N-hydrocarbyloxy hindered amine light stabilizers with phosphorus moieties | Raymond Seltzer | 1991-06-04 |
| 5019613 | N-hydrocarbyloxy derivatives of hindered amine-substituted S-triazines | Ramanathan Ravichandran | 1991-05-28 |