Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889788 | Photosensitive composition, photosensitive copying material prepared from this composition with thermal hardening symmetric triazine alkyl(aryl)-ether | Hans W. Frass | 1989-12-26 |
| 4889789 | Photosensitive composition and photosensitive copying material prepared therefrom wherein composition has a thermal crosslinking urethane formaldehyde condensate | — | 1989-12-26 |
| 4885230 | Burn-in gumming composition for offset printing plates | Dieter Mohr | 1989-12-05 |