Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4357280 | Use of tertiary phosphines in photographic silver dye bleach materials | Christoph Chylewski, Roland Kurzen, Max Meier, Matthias Schellenberg | 1982-11-02 |
| 4323682 | Quinoxalines and their use in photographic processes | Remon Hagen, John Lenoir | 1982-04-06 |