Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845024 | Hardeners for proteins, a binder layer hardened therewith and a photographic recording material containing such a layer | Wolfgang Himmelmann, Johannes Sobel, Karl-Wilhelm Schranz | 1989-07-04 |
| 4840880 | Color photographic recording material containing a yellow DIR coupler | Gunter Renner, Friedrich-Wilhelm Kunitz, Heinrich Odenwalder, Dirk Hubner | 1989-06-20 |
| 4840890 | Hardened proteinic binder layer | Karl-Wilhelm Schranz, Johannes Sobel | 1989-06-20 |
| 4810627 | Photographic recording material | Walter Patzold, Helmut Reuss, Karl Steinbeck | 1989-03-07 |
| 4804623 | Photographic recording material, a process for the production of photographic images and new triazoles | — | 1989-02-14 |