Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6455725 | Substituted cinnamic acids and cinnamic acid esters | Walter Lange, Guido Steffan, Ernst Kysela | 2002-09-24 |
| 6433228 | Process for preparing 2-halogenated indan-1-ones | Helmut Fiege, Guido Steffan, Klaus-Christian Paetz | 2002-08-13 |
| 6355827 | Process for preparing 2-cyanoindan-1-ones | Helmut Fiege, Guido Steffan | 2002-03-12 |