Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4191566 | Electrophotographic imaging process using anthraquinoid black pigments or metal complexes | Remy Jeanneret, Gunther Zwahlen, Christoph Frey | 1980-03-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4191566 | Electrophotographic imaging process using anthraquinoid black pigments or metal complexes | Remy Jeanneret, Gunther Zwahlen, Christoph Frey | 1980-03-04 |