Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868091 | Photopolymerizable recording material, in particular for the production of printing plates and relief plates | Andreas Boettcher, Bernd Bronstert | 1989-09-19 |
| 4849307 | Photosensitive recording materials having a novel graft copolymer binder | Horst Koch, Guenther Schulz | 1989-07-18 |
| 4816379 | Production of relief plates and printing plates by a positive-working method | Bernd Bronstert, John Lynch | 1989-03-28 |
| 4806452 | Production of flexographic relief plates by photopolymerization and development with a monoterpene developer | Karl-Rudolf Kurtz | 1989-02-21 |