Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4820616 | Color photographic recording material | Reinhart Matejec, Manfred Becker, Hans-Joerg Metz | 1989-04-11 |
| 4579816 | Yellow DIR coupler with 5-furyl(1,2,4-triazole) coupling off group | Hans Ohlschlager, Ulrich Griesel | 1986-04-01 |
| 4546073 | Photographic recording material containing a precursor of a photographically-active compound | Peter Bergthaller, Reinhard Matejec | 1985-10-08 |
| 4420557 | Color photographic recording material containing a non-diffusible electron donor precursor compound | Paul Marx | 1983-12-13 |
| 4360581 | Color photographic recording material containing non-diffusing electron donor compounds | Hans Vetter, Wilhelmus Janssens, Jan Jaeken | 1982-11-23 |
| 4310621 | Photosensitive photographic material, a process for the production of photographic images, development baths and new hydroquinones | Karl Frank, Reinhard Muller | 1982-01-12 |
| 4301243 | Photographic recording material | Walter Puschel, Erwin Ranz | 1981-11-17 |
| 4282313 | Photographic material with stabilizers | Ubbo Wernicke, Friedhelm Sommer | 1981-08-04 |
| 4250252 | Light-sensitive color photographic material | Hans Vetter, Walter Puschel, Erwin Ranz | 1981-02-10 |
| 4210714 | Photographic material with improved properties | Anita von Konig, Franz Moll, Walter Patzold, Lothar Rosenhahn, Friedhelm Sommer | 1980-07-01 |
| 4186012 | Light sensitive color photographic material containing development inhibitor releasing coupler | Walter Puschel, Robert J. Pollet, Erwin Ranz | 1980-01-29 |
| 4184875 | Photographic reversal process | Ubbo Wernicke | 1980-01-22 |