Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5595628 | Production of pulp by the soda-anthraquinone process (SAP) with recovery of the cooking chemicals | Otto W. Gordon, Frank Doppenberg | 1997-01-21 |
| 4880571 | Process for the preparation of 5-nitro-1,4-naphthoquinone | Christos Comninellis, Robert U. Osterwalder, Gottfried Seifert | 1989-11-14 |
| 4770818 | Process for the preparation of 1-aminoanthraquinones | Gottfried Seifert, Tibor Somlo | 1988-09-13 |
| 4582942 | Process for the manufacture of an aldehyde | Christos Comninellis | 1986-04-15 |
| 4559176 | Process for the production of benzanthrone | Martin Burli, Jacques Bersier, Hans Herrmann | 1985-12-17 |
| 4510100 | Process for the production of 2-amino-1-naphthalenesulfonic acid | Sebastian Staubli, Fred von Kaenel | 1985-04-09 |
| 4394227 | Electrochemical process for the preparation of benzanthrones and planar, polycyclic aromatic oxygen-containing compounds | Horst Jager, Jacques Bersier, Christos Comninellis | 1983-07-19 |