Issued Patents All Time
Showing 1–25 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6608122 | Stabilized organic material | Jean-Luc Birbaum, Jean Rody, Mario Slongo, Andreas Valet | 2003-08-19 |
| 6495622 | Dimeric light stabilizers for polyolefines and polyolefine copolymers | David G. Leppard, Vien Van Toan, Michela Bonora | 2002-12-17 |
| 6337426 | Antifoulant compositions and processes | — | 2002-01-08 |
| 6218536 | 1,2-bis-adducts of stable nitroxides with substituted ethylenes and stabilized compositions | Glen T. Cunkle, Thomas F. Thompson, Volker H. von Ahn | 2001-04-17 |
| 6187919 | Stabilized organic material | Jean-Luc Birbaum, Jean Rody, Mario Slongo, Andreas Valet | 2001-02-13 |
| 6117276 | Inhibiting polymerization of vinyl aromatic monomers | Glen T. Cunkle, Thomas F. Thompson, Volker H. von Ahn | 2000-09-12 |
| 5942626 | Process for making 5-thio-substituted benzotriazole UV absorbers | Volker H. von Ahn, Tyler A. Stevenson, Mark S. Holt, Ramanathan Ravichandran | 1999-08-24 |
| 5877344 | Polymerization inhibition of acrylates using blends of nitroxides | Matthew E. Gande, Glen T. Cunkle, Leslie R. Gatechair, Stephen D. Pastor, Raymond Seltzer | 1999-03-02 |
| 5844025 | 1,2-Bis-adducts of stable nitroxides with substituted ethylenes and stabilized compositions | Glen T. Cunkle, Thomas F. Thompson, Volker H. von Ahn | 1998-12-01 |
| 5750765 | 7-substituted quinone methides as inhibitors for unsaturated monomers | Peter Nesvadba, Samuel Evans, Matthew E. Gande, Volker H. von Ahn | 1998-05-12 |
| 5736597 | Stabilized organic material | Jean-Luc Birbaum, Jean Rody, Mario Slongo, Andreas Valet | 1998-04-07 |
| 5670692 | 7-substituted quinone methides as inhibitors for unsaturated monomers | Peter Nesvadba, Samuel Evans, Matthew E. Gande, Volker H. von Ahn | 1997-09-23 |
| 5616774 | Inhibition of unsaturated monomers with 7-aryl quinone methides | Samuel Evans, Matthew E. Gande, Peter Nesvadba, Volker H. von Ahn | 1997-04-01 |
| 5607987 | 2-(2-hydroxy-3-.alpha. cumyl-5-tert nonyl or dodecyl phenyl)-2H- Benzotriazole UV Absorbers | Ramanathan Ravichandran, Mark S. Holt, Volker H. von Ahn, Joseph E. Babiarz, David G. Leppard | 1997-03-04 |
| 5583247 | 7-substituted quinone methides as inhibitors for unsaturated monomers | Peter Nesvadba, Samuel Evans, Matthew E. Gande, Volker H. von Ahn | 1996-12-10 |
| 5574166 | Crystalline form of 2-(2-hydroxy-3-.alpha.-cumyl-5-tert-octylphenyl)-2H-benzotriazole | Ramanathan Ravichandran, Mark S. Holt, Volker H. von Ahn, Joseph E. Babiarz, David G. Leppard | 1996-11-12 |
| 5563242 | Electro coat/base coat/clear coat finishes stabilized with soluble and thermally stable benzotriazole UV absorbers | Ramanathan Ravichandran, Mark S. Holt, Volker H. von Ahn, Joseph E. Babiarz, David G. Leppard | 1996-10-08 |
| 5554760 | 2-(2-hydroxy-3-.alpha.-cumyl-5-nonylor 5-dodecylphenyl)-2H-benzotriazole | Ramanathan Ravichandran, Mark S. Holt, Volker H. von Ahn, Joseph E. Babiarz, David G. Leppard | 1996-09-10 |
| 5545782 | Method for inhibiting premature polymerization of vinyl aromatic monomers | Volker H. von Ahn | 1996-08-13 |
| 5545786 | Method for inhibiting premature polymerization of vinyl aromatic monomers | Volker H. von Ahn | 1996-08-13 |
| 5516914 | Compositions stabilized with 5-thio-substituted benzotriazole UV-absorbers | Volker H. von Ahn, Tyler A. Stevenson, Mark S. Holt, Ramanathan Ravichandran | 1996-05-14 |
| 5439958 | Polyalkyl-4-piperidinol derivatives for use as stabilizers for organic materials | Roberto Scrima, Graziano Zagnoni, Michael Ackerman, James P. Galbo | 1995-08-08 |
| 5436349 | Compositions stabilized with 5-sulfonyl-substituted benotriazole UV-absorbers | Volker H. von Ahn, Tyler A. Stevenson, Mark S. Holt, Ramanathan Ravichandran | 1995-07-25 |
| 5300647 | O-carbonyl N-hydroxy hindered amine stabilizers | Roger F. Malherbe, James P. Galbo | 1994-04-05 |
| 5280124 | 5-sulfonyl-substituted benzotriazole UV-absorbers | Volker H. von Ahn, Tyler A. Stevenson, Mark S. Holt, Ramanathan Ravichandran | 1994-01-18 |