Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8277689 | Stabilizer composition for improved protection against degradation of organic substrates by light | Christoph Kroehnke | 2012-10-02 |
| 7332535 | Stabilizer mixtures for the protection of polymer substrates | Christoph Krohnke, Joseph R. Webster, Ernst Gronmaier | 2008-02-19 |
| 7081213 | Stabilizer mixtures for the protection of polymer substrates | Christoph Krohnke, Joseph R. Webster, Ernst Gronmaier | 2006-07-25 |
| 6441244 | Benzophenones and the use thereof as photoinitiators | René Bär, Victor Sanahuja | 2002-08-27 |
| 6201047 | Method of stabilizing EPDM modified polypropylene by adding piperidine compounds | Andreas Thuermer, Gilbert Ligner | 2001-03-13 |
| 6153676 | Stabilized polyolefins | Gilbert Ligner, Joseph R. Webster | 2000-11-28 |
| 5821288 | Organic compounds | Roland Valin | 1998-10-13 |
| 5705545 | Use of HALS compounds | Gilbert Ligner | 1998-01-06 |
| 5616636 | Phosphonite-hals and phosphite-hals compounds as stabilizers | Peter Staniek, Klaus Stoll, Wolf-Dieter Habicher, Uwe Hahner | 1997-04-01 |
| 5569539 | Powder coating compositions | Karl Bechtold, Rainer Wolf | 1996-10-29 |
| 5489632 | Imino ethers | — | 1996-02-06 |
| 5306823 | 2,2,6,6-tetraalkylpiperidine compounds useful as light stabilizers | — | 1994-04-26 |
| 4921893 | Stabilizing polymers | — | 1990-05-01 |
| 4920169 | Oxalic acid di(phenylamides) and use thereof as UV absorbers | — | 1990-04-24 |
| 4916175 | N-(2,2,6,6,-tetraalkylpiperidinyl-4)-N'-phenyl oxalic acid diamides | — | 1990-04-10 |
| 4891396 | New benztriazolyl compounds | Helmut Bohnke | 1990-01-02 |
| 4876299 | Oxalanilides useful as U.V. absorbers | — | 1989-10-24 |
| 4859725 | Oxalamide compounds useful as UV absorbers | — | 1989-08-22 |
| 4780492 | Concentrated solutions of U.V. stabilizers | — | 1988-10-25 |
| 4774332 | Piperidine containing stabilizer compounds | — | 1988-09-27 |
| 4730017 | 2,2,6,6-tetraalkyl-piperidine compounds useful as light stabilizers | — | 1988-03-08 |
| 4716187 | Stabilizing polymers | — | 1987-12-29 |
| 4695600 | Tetraalkylpiperidines | — | 1987-09-22 |
| 4661595 | Method for producing xanthone and thioxanthone compounds useful as photoinitiators | — | 1987-04-28 |
| 4485034 | Aromatic oxamides useful as stabilizers | Evelyne Kalt, Hellmuth Reinshagen | 1984-11-27 |