Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5683863 | Photographic silver halide material | Peter Bergthaller, Hans-Ulrich Borst, Peter Bell, Johannes Willsau, Thomas Stetzer | 1997-11-04 |
| 5679504 | Color photographic silver halide material | Peter Bell, Johannes Willsau, Hans-Ulrich Borst | 1997-10-21 |
| 5667956 | Silver halide recording material | Michael Missfeldt, Johannes Willsau, Peter Bell, Hans-Ulrich Borst | 1997-09-16 |