Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5602284 | Process for separating off aminobiphenyl from diphenylamine | Hans-Josef Buysch, Rudolf Wiemers | 1997-02-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5602284 | Process for separating off aminobiphenyl from diphenylamine | Hans-Josef Buysch, Rudolf Wiemers | 1997-02-11 |