Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10143987 | Method for dividing fluid streams | Berthold Keggenhoff, Jeffrey Bolton, Friedhelm Steffens, Gerhard Ruffert, Jürgen Kern +1 more | 2018-12-04 |
| 9272988 | Method for producing diisocyanates by phosgenating diamine suspensions | Jörg Laue, Christian Steffens, Jens Krause, Stefan Wershofen, Werner Kilian +1 more | 2016-03-01 |
| 4827050 | Method for separation of phenols and bases from coal tar oils by extraction | Siegfried Peter, Herbert Beneke, Jurgen Stadelhofer | 1989-05-02 |