Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5628988 | Ketotricyclo[5.2.1.0]decane derivatives | Michael Schwarz, Ulrich Heywang, J urgen Eckstein | 1997-05-13 |
| 5600007 | Use of .alpha.-hydroxyketoalkyl derivatives as light protection filters | Roland Martin, Ulrich Heywang, Michael Schwarz, Thekla Kurz | 1997-02-04 |