Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5625097 | Process for preparing diphenylamines and catalysts usable for this purpose | Hans-Josef Buysch, Christine Mendoza-Frohn, J urgen Scharschmidt, Rudolf J. Klee, Gerhard Darsow | 1997-04-29 |