Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5684217 | Process for preparing 3-fluoro-4,6-dichlorotoluene | Werner Bussmann, Helmut Fiege | 1997-11-04 |
| 5679826 | Process for the preparation of 2-chloroacrylonitrile | Thomas Essert, Helmut Fiege, Friedrich Durholz, Guido Steffan | 1997-10-21 |