Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5085981 | Photographic silver halide element with protective layer | Wolfgang Himmelmann, Prem Lalvani, Gunter Helling | 1992-02-04 |
| 5034249 | Process for hardening layers containing proteinaceous binders | Heinz Reif, Prem Lalvani | 1991-07-23 |
| 4978607 | Photographic recording material | Edouard Roche, Wolfgang Himmelmann, Heinz Quambusch | 1990-12-18 |
| 4940653 | Multilayered color photographic material having an alkali soluble interlayer | Prem Lalvani, Diethart Lademann, Heinz Reif, Walther Cohnen | 1990-07-10 |