Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869997 | Coating plate cylinders or sleeves with a continuous photosensitive recording layer | Horst Koch, Helmut Bach | 1989-09-26 |
| 4725528 | Production of non-tacky, smooth surfaces of photopolymer relief printing plates for flexographic printing | Horst Koch | 1988-02-16 |
| 4579806 | Positive-working photosensitive recording materials | Hans Schupp, Albert Elzer, Reinhold J. Leyrer | 1986-04-01 |