Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4257859 | Benzoin photoinitiator containing a quaternary ammonium group in photo curable composition and process | Martin Fischer, Werner Kuesters, Erich Penzel, Walter Trautmann | 1981-03-24 |