Issued Patents 1982
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4355185 | Process for the preparation of 2-mercaptoalkyl-sulphides and 2-mercaptoalkylethers | Peter Wenzl | 1982-10-19 |
| 4349624 | Photographic silver halide material | Johannes Sobel, Wolfgang Himmelmann | 1982-09-14 |
| 4338394 | Process for hardening photographic gelatin | Wolfgang Himmelmann, Johannes Sobel | 1982-07-06 |
| 4334013 | Use of copolymers in the production of photographic emulsions and photographic materials | Helmut Sommer | 1982-06-08 |
| 4329441 | Process for the polymerization of allyl ammonium salts and the resulting products | — | 1982-05-11 |
| 4323646 | Process for hardening a photographic material | Wolfgang Himmelmann, Johannes Sobel | 1982-04-06 |