Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5698705 | Isoindoline pigments | Erwin Dietz, Gustav Kapaun, Siegfried Schiessler | 1997-12-16 |
FA
Frank Alfter
Overall (1997): #153,178 of 185,788Top 85%
1
Patents 1997