Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6680390 | Use of substituted vinyl-tetrahydronaphthalenes and vinyl-benzotetrahydropyrans as light protection agents | Frank Prechtl, Horst Westenfelder, Thomas Wilnsch | 2004-01-20 |