Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5443944 | Photographic material | Werner Krafft, Friedrich Jonas, Hartwig Andries, Willem Mues | 1995-08-22 |
| 5085981 | Photographic silver halide element with protective layer | Wolfgang Himmelmann, Hans-Theo Buschmann, Gunter Helling | 1992-02-04 |
| 5034249 | Process for hardening layers containing proteinaceous binders | Heinz Reif, Hans-Theo Buschmann | 1991-07-23 |
| 4940653 | Multilayered color photographic material having an alkali soluble interlayer | Diethart Lademann, Hans-Theo Buschmann, Heinz Reif, Walther Cohnen | 1990-07-10 |