Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6228568 | Color photographic recording material | Thomas Stetzer, Hans Langen, Heinz-Dieter Schutz, Hans-Joachim Schumann, Klaus Sinzger +2 more | 2001-05-08 |
| 5200306 | Color photographic recording material containing a coupler which releases a photographically active compound | Heinrich Odenwalder, Hans Vetter, Peter Bergthaller | 1993-04-06 |
| 5021330 | Color photographic recording material containing a coupler releasing a photographically active compound | Peter Bergthaller, Thomas Krüger, Rudolf Stolzenburg | 1991-06-04 |
| 4897341 | Color photographic recording material containing a dir-coupler | Heinrich Odenwalder, Hans Ohlschlager, Friedrich-Wilhelm Kunitz | 1990-01-30 |
| 4870000 | Color photograhic recording material containing a coupler which releases a photographically active compound | Peter Bergthaller, Rudolf Stolzenburg | 1989-09-26 |
| 4840880 | Color photographic recording material containing a yellow DIR coupler | Hans Ohlschlager, Gunter Renner, Friedrich-Wilhelm Kunitz, Heinrich Odenwalder | 1989-06-20 |
| 4833070 | Color photographic recording material containing a yellow DIR coupler | Friedrich-Wilhelm Kunitz, Hans hlschlager, Heinrich Odenwalder | 1989-05-23 |