Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4301242 | Emulsion mixture for color reversal (reflection viewing) material | Walter Patzold | 1981-11-17 |
| 4233398 | Process for the hardening of photographic layers utilizing fast acting hardener and polysaccharide | Fritz Nittel, Wolfgang Sauerteig, Wolfgang Himmelmann, Peter Bergthaller | 1980-11-11 |