Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5686233 | Bisresorcinyltriazines | Andreas Valet, Vien Van Toan, Walter Knupp | 1997-11-11 |
| 5637706 | Compositions stabilized with red-shifted tris-aryl-s-triazines | Tyler A. Stevenson, Ramanathan Ravichandran, Mark S. Holt, Thuy N. Phan, Vien Van Toan | 1997-06-10 |
| 5597854 | Latent light stabilizers | Gerhard Rytz, Vien Van Toan, Andreas Valet, Norbert W urms | 1997-01-28 |
| 5591850 | o-Hydroxyphenyl-s-triazines | J urgen Kaschig, Dieter Reinehr, Manfred Rembold, Andr e Schmitter, Helmut Luther +2 more | 1997-01-07 |