Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4387159 | Light sensitive, color photographic silver halide compositions with DIR-couplers | Horst Engelmann, Rainer Redmann, Monika Bethke, Christa Melz, Gerd West +1 more | 1983-06-07 |
| 4286054 | Light sensitive, color photographic silver halide compositions with DIR-couplers | Horst Englemann, Rainer Redmann, Monika Bethke, Christa Melz, Gerd West +1 more | 1981-08-25 |