Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5075207 | Color photographic recording material containing new colored cyan couplers | Hans Langen, Gunter Renner | 1991-12-24 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5075207 | Color photographic recording material containing new colored cyan couplers | Hans Langen, Gunter Renner | 1991-12-24 |