Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5888709 | Photographic recording material | Wolfgang Schmidt, Dieter Rockser, Gustav Tappe | 1999-03-30 |
| 5776667 | Color photographic recording material having a yellow filter layer which contains an arylidene dye of isoxazolone as the yellow filter dye | Hans Langen, Klaus Sinzger | 1998-07-07 |
| 5665532 | Black and white paper with variable gradation | Manfred Peters, Thomas Kaluschke, Bruno Mucke | 1997-09-09 |
| 4897341 | Color photographic recording material containing a dir-coupler | Heinrich Odenwalder, Friedrich-Wilhelm Kunitz, Dirk Hubner | 1990-01-30 |
| 4845024 | Hardeners for proteins, a binder layer hardened therewith and a photographic recording material containing such a layer | Wolfgang Himmelmann, Johannes Sobel, Karl-Wilhelm Schranz | 1989-07-04 |
| 4840890 | Hardened proteinic binder layer | Karl-Wilhelm Schranz, Johannes Sobel | 1989-06-20 |
| 4840880 | Color photographic recording material containing a yellow DIR coupler | Gunter Renner, Friedrich-Wilhelm Kunitz, Heinrich Odenwalder, Dirk Hubner | 1989-06-20 |
| 4810627 | Photographic recording material | Walter Patzold, Helmut Reuss, Karl Steinbeck | 1989-03-07 |
| 4804623 | Photographic recording material, a process for the production of photographic images and new triazoles | — | 1989-02-14 |
| 4749643 | Photographic recording element containing a UV absorbent and a silver halide emulsion layer | Hans Langen, Johannes Sobel | 1988-06-07 |
| 4579816 | Yellow DIR coupler with 5-furyl(1,2,4-triazole) coupling off group | Ulrich Griesel, Heinrich Odenwalder | 1986-04-01 |
| 4366221 | Photographic recording material and new merocyanines | Hans Langen | 1982-12-28 |
| 4276373 | Photosensitive photographic material containing a light-absorbing dye | Lothar Rosenhahn, Wolfgang Sauerteig | 1981-06-30 |
| 4229526 | Light-sensitive photographic recording material | — | 1980-10-21 |