Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4427763 | Photographic recording material with a precursor compound for a yellow mask | Gunter Renner, Wolfgang Sauerteig | 1984-01-24 |
| 4369248 | Photographic recording material and its use for the production of images | Erwin Ranz, Heinz-Dieter Schutz | 1983-01-18 |
| 4348474 | Light sensitive photographic recording material and the use thereof for the production of photographic images | Rainer Scheerer, Erwin Ranz | 1982-09-07 |
| 4315070 | Color-photographic recording material containing a highly reactive dir-coupler | Erwin Ranz, Heinz-Dieter Schutz | 1982-02-09 |
| 4267264 | Color photographic recording material | Otto Lapp, Erwin Ranz | 1981-05-12 |
| 4186011 | Color photographic recording material | Erwin Ranz, Martin Kupper | 1980-01-29 |
| 4186016 | Color photographic recording material | Otto Lapp, Immo Boie | 1980-01-29 |