Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6468723 | Concentrate comprising a p-phenylenediamine derivative | Wolfgang Korner, Gerhard Schmid | 2002-10-22 |
| 6468724 | Color photographic developer concentrate | Matthias Porger | 2002-10-22 |
| 6413703 | Color photographic developer concentrate | Wolfgang Korner | 2002-07-02 |