Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5391804 | Process for the preparation of mono-N-.beta.-cyanoethylanilines | Manfred Blazejak, Karl-Johann Wemmje | 1995-02-21 |
| 4859372 | Process for the sulphonation of aromatic compounds with sulphur trioxide | Horst Behre, Heinz U. Blnak, Nikolaus Muller, Peter Schnegg | 1989-08-22 |
| 4467123 | Process for the preparation of alkali metal diphenylates and free hydroxydiphenyls | Dietmar Mayer, Horst-Dieter Kramer, Eike Gabel | 1984-08-21 |