Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4279802 | Method for the production of a pigment preparation for coloring linear polyesters in the melt | Andreas Laely, Lothar Buxbaum | 1981-07-21 |
| 4191566 | Electrophotographic imaging process using anthraquinoid black pigments or metal complexes | Remy Jeanneret, Christoph Frey, Georgios Zographos | 1980-03-04 |