Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |