Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886735 | Photopolymerizable recording materials and photoresist layers and lithographic printing plates based thereon | Andreas Boettcher, Reinhard Aldag, Thomas Bluemel | 1989-12-12 |
| 4874865 | Preparation of substituted lactams | Ludwig Wambach | 1989-10-17 |
| 4822946 | Preparation of olefins from tertiary alkyl halides | — | 1989-04-18 |