Issued Patents All Time
Showing 26–50 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5278314 | 5-thio-substituted benzotriazole UV-absorbers | Volker H. von Ahn, Tyler A. Stevenson, Mark S. Holt, Ramanathan Ravichandran | 1994-01-11 |
| 5254760 | Inhibiting polymerization of vinyl aromatic monomers | Sheng-Shing Li, Leslie R. Gatechair, Volker H. von Ahn | 1993-10-19 |
| 5240975 | Liquid substituted 2H-benzotriazole mixtures, stabilized compositions | Robert Detlefsen, Werner Stegmann, Reto Luisoli, David G. Leppard | 1993-08-31 |
| 5204422 | Peroxide free radical initiators containing hindered amine moieties with low basicity | Raymond Seltzer, Peter J. Schirmann | 1993-04-20 |
| 5204473 | O-substituted N-hydroxy hindered amine stabilizers | James P. Galbo, Raymond Seltzer | 1993-04-20 |
| 5140081 | Peroxide free radical initiators containing hindered amine moieties with low basicity | Raymond Seltzer, Peter J. Schirmann | 1992-08-18 |
| 5112890 | Stabilization of acid catalyzed thermoset resins | Rudolf A. Behrens, Andrew Mar, Peter J. Schirmann, Raymond Seltzer, Roger F. Malherbe | 1992-05-12 |
| 5095062 | Stabilized compositions containing liquid substituted 2H-benzotriazole mixtures | Robert E. Detiefsen, Werner Stegmann, Reto Luisoli, David G. Leppard | 1992-03-10 |
| 5051511 | Peroxide free radical initiators containing hindered amine moieties with low basicity | Raymond Seltzer, Peter J. Schirmann | 1991-09-24 |
| 4973701 | Liquid substituted 2H-benzotriazole mixtures, stabilized compositions and processes for preparing the liquid mixtures | Werner Stegmann, Reto Luisoli, David G. Leppard, Robert Detlefsen | 1990-11-27 |
| 4904712 | 5-Higher alkyl substituted-2H-benzotriazoles in stabilized compositions | Raymond Seltzer | 1990-02-27 |
| 4891424 | 4-aralkyl-2-nitro-2'-hydroxy-3',5'-dialkyl (or cumyl)-azobenzenes | Raymond Seltzer | 1990-01-02 |
| 4861813 | 5-Aralkyl substituted 2h-benzotriazoles in stabilized compositions | Raymond Seltzer | 1989-08-29 |
| 4847367 | 4-higher alkyl-2-nitro-2'-hydroxy-3',5'-di-higher alkyl (or cumyl)-azobenzenes | Raymond Seltzer | 1989-07-11 |
| 4760148 | 5-aralkyl substituted 2H-benzotriazoles and stabilized compositions | Raymond Seltzer | 1988-07-26 |
| 4753979 | Substituted piperazinone light stabilizers | Thomas E. Conetta, Roger F. Malherbe | 1988-06-28 |
| 4727158 | 5-Higher alkyl substituted-2H-benzotriazoles | Raymond Seltzer | 1988-02-23 |
| 4703073 | Alkylated N,N-dibenzylhydroxylamines and polyolefin compositions stabilized therewith | Ramanathan Ravichandran, Raymond Seltzer | 1987-10-27 |
| 4675352 | Liquid 2-(2-hydroxy-3-higher branched alkyl-5-methyl-phenyl)-2H-benzotriazole mixtures, stabilized compositions and processes for preparing liquid mixtures | Robert Detlefsen | 1987-06-23 |
| 4665185 | Process for preparing nitroxyls of sterically hindered amines | Roger F. Malherbe | 1987-05-12 |
| 4650870 | Substituted piperazinone light stabilizers | Thomas E. Conetta, Roger F. Malherbe | 1987-03-17 |
| 4618638 | Compositions containing alpha-cyanocinnamate ultraviolet-absorbing stabilizers substituted by an aliphatic hydroxyl group | Martin Dexter | 1986-10-21 |
| 4587346 | Liquid 2-(2-hydroxy-3-higher branched alkyl-5-methyl-phenyl)-2H-benzotriazole mixtures, stabilized compositions and processes for preparing liquid mixtures | Robert Detlefsen | 1986-05-06 |
| 4544691 | Compositions containing ultraviolet-absorbing stabilizing substituted by an aliphatic hydroxyl group | Martin Dexter | 1985-10-01 |
| 4504419 | Alpha-cyanocinnamate ultraviolet-absorbing stabilizers substituted by an aliphatic hydroxyl group | Martin Dexter | 1985-03-12 |