Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886735 | Photopolymerizable recording materials and photoresist layers and lithographic printing plates based thereon | Andreas Boettcher, Martin Fischer, Reinhard Aldag | 1989-12-12 |
| 4866183 | Preparation of hexaarylbisimidazoles | Uwe Kempe, Toni Dockner, Helmut Karn, Reinhold J. Leyrer, Thomas Loerzer | 1989-09-12 |