Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5362615 | Photographic recording material containing a hydroquinone diether compound | Jorg Hagemann, Ralf Weimann, Erich Wolff | 1994-11-08 |
| 4952487 | Color photographic recording material | Gunter Renner, Klaus Wagner, Gunter Junkers, Friedhelm Sommer | 1990-08-28 |
| 4943519 | Light sensitive, stabilized photographic recording material | Gunter Helling, Hans Langen | 1990-07-24 |
| 4942068 | Curtain coating process | Wolfgang Schweicher, Hans Frenken, Heinrich Bussmann, Kurt Browatzki | 1990-07-17 |
| 4894324 | Hardeners for proteins, a layer of binder hardened therewith and a photographic recording material containing such a layer | Wolfgang Himmelmann, Hans hlschlager, Karl-Wilhem Schranz | 1990-01-16 |
| 4845024 | Hardeners for proteins, a binder layer hardened therewith and a photographic recording material containing such a layer | Wolfgang Himmelmann, Hans Ohlschlager, Karl-Wilhelm Schranz | 1989-07-04 |
| 4840890 | Hardened proteinic binder layer | Hans Ohlschlager, Karl-Wilhelm Schranz | 1989-06-20 |
| 4810625 | Photographic material with pyrazolone coupler and oil former | Klaus Wagner, Fritz Nittel | 1989-03-07 |
| 4749643 | Photographic recording element containing a UV absorbent and a silver halide emulsion layer | Hans Ohlschlager, Hans Langen | 1988-06-07 |
| 4464464 | Color photographic recording material | Reinhart Matejec, Fritz Nittel | 1984-08-07 |
| 4349624 | Photographic silver halide material | Wolfgang Himmelmann, Peter Bergthaller | 1982-09-14 |
| 4339515 | Method of stabilizing color photographic materials and a color photographic material | Karl-Wilhelm Schranz | 1982-07-13 |
| 4338394 | Process for hardening photographic gelatin | Wolfgang Himmelmann, Peter Bergthaller | 1982-07-06 |
| 4330606 | Color photographic materials and color photographic images | Karl-Wilhelm Schranz | 1982-05-18 |
| 4323646 | Process for hardening a photographic material | Peter Bergthaller, Wolfgang Himmelmann | 1982-04-06 |