Issued Patents All Time
Showing 1–25 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6028199 | Hardeners for photographic materials | Peter Bergthaller | 2000-02-22 |
| 5719011 | Photographic recording material | — | 1998-02-17 |
| 5418123 | Color photographic recording material containing a color coupler of the pyrazoloazole series | — | 1995-05-23 |
| 5415989 | Color photographic recording material containing a color coupler of the pyrazoloazole series | Dieter Lowski | 1995-05-16 |
| 5362615 | Photographic recording material containing a hydroquinone diether compound | Jorg Hagemann, Ralf Weimann, Johannes Sobel | 1994-11-08 |
| 5336780 | 5-amino-1-hydroximoyl pyrazoles | Klaus Kirschke, Gerhard Lutze, Ernst Schmitz | 1994-08-09 |
| 5200305 | Color photographic recording material containing color couplers which yield heat-stable dyes | Hans-Joachim Schumann | 1993-04-06 |
| 5158864 | Color photographic material | Reinhart Matejec, Heinrich Odenwalder, Hans hlschlager | 1992-10-27 |
| 5134061 | Photographic recording material | — | 1992-07-28 |
| 5118598 | Color photographic silver halide material having a magenta coupler and an oil former compound | — | 1992-06-02 |
| 5015565 | Color photographic recording material | — | 1991-05-14 |
| 5004676 | Process for the production of color photographic images comprising replenishing the developing solution | Heinz Meckl, Sieghart Klotzer, Helmut Haseler | 1991-04-02 |
| 4985351 | Photographic recording material | Reinhart Matejec, Heinrich Odenwalder, Hans hlschlager | 1991-01-15 |
| 4939079 | Photographic recording material | Hans Langen, Wolfgang Himmelmann, Gunter Helling | 1990-07-03 |
| 4898811 | Color photographic silver halide material with sulfonylphenol oil former | Dieter Lowski, Harry Elias | 1990-02-06 |
| 4873338 | Process for the preparation of 2-amino-5-acylamino phenols and starting compounds suitable therefor | Heinz Wiesen | 1989-10-10 |
| 4871657 | Color photographic recording material with easily dispersible color couplers | — | 1989-10-03 |
| 4865960 | Polymeric magneta coupler and a colour photographic recording material containing this polymeric magenta coupler | Gunter Helling | 1989-09-12 |
| 4855222 | Color photographic recording material | Gunter Renner, Heinz Wiesen, Werner Liebe | 1989-08-08 |
| 4845022 | Color photographic recording material containing a color coupler of the pyrazoloazole type | — | 1989-07-04 |
| 4835094 | Color photographic recording material containing a color coupler of the pyrazoloazole series | Hans-Joachim Schumann | 1989-05-30 |
| 4812576 | Imino derivatives of 4-halogen-pyrazolone-5 | Dieter Lowski, Harry Elias | 1989-03-14 |
| 4738919 | Photosensitive photographic silver halide recording material | Gerd Krauss, Gunter Renner, Hans Langen, Werner Krafft | 1988-04-19 |
| 4617255 | Color coupler-containing photographic material | Hans Langen, Rudolf Braden | 1986-10-14 |
| 4581324 | Color photographic recording material for the production of color images viewed by reflected light | Gunter Renner, Friedrich-Wilhelm Kunitz | 1986-04-08 |