Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5573897 | Method of applying a transparent magnetic layer to a web or sheet material | Hartwig Andries, Willem Mues, Jan Gilleir | 1996-11-12 |
| 5443944 | Photographic material | Friedrich Jonas, Prem Lalvani, Hartwig Andries, Willem Mues | 1995-08-22 |
| 5370981 | Antistatic plastic articles | Friedrich Jonas, Bavo Muys, Dirk Quintens | 1994-12-06 |
| 5300575 | Polythiophene dispersions, their production and their use | Friedrich Jonas | 1994-04-05 |
| 5070006 | Photographic material comprising an NC layer | Gunter Helling, Gunter Matschke | 1991-12-03 |
| 4738919 | Photosensitive photographic silver halide recording material | Gerd Krauss, Gunter Renner, Erich Wolff, Hans Langen | 1988-04-19 |
| 4440849 | Dye diffusion transfer process with development accelerators | — | 1984-04-03 |
| 4379829 | Photographic material containing a temporary barrier layer applied from an organic solution | Gunter Helling, Guunther Matschke, Immo Boie | 1983-04-12 |
| 4284708 | Photographic film unit for the production of colored transfer images | Gunter Helling, Kurt Charles Findeisen, Wolfgang Himmelmann | 1981-08-18 |