Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5677314 | Bis(methylidene)phenylene derivatives | Inge Stein, Michael Schwarz, Ulrich Heywang | 1997-10-14 |
| 5639883 | Process for preparing substituted 4-methylidenecinnamic acid derivatives | Eike Poetsch, Volker Meyer, Ulrich Heywang, Inge Stein, Michael Schwarz | 1997-06-17 |