Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4419440 | Process for the introduction of hydrophobic photographic additives | Lothar Kuhnert, Burkhard Costisella, Christoph Roth, Wolfgang Baumbach, Renate Hoppe | 1983-12-06 |
| 4410624 | Method of dispersing oil soluble photographic additives | Dieter Plaschnick, Christoph Roth, Bernd Noll, Lothar Kuhnert | 1983-10-18 |