Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4609760 | Process for the preparation of 2,6-xylidine | Helmut LeBlanc, Karlfried Wedemeyer | 1986-09-02 |
| 4335051 | Process for the preparation of dimethyl carbonate | Hans-Josef Buysch, Heinrich Krimm | 1982-06-15 |
| 4326080 | Process for the preparation of 4-amino-diphenylamines | Karlfried Wedemeyer | 1982-04-20 |
| 4275241 | Process for the preparation of 3-phenoxy-benzaldehydes | Alfons Klein, Karlfried Wedemeyer | 1981-06-23 |