Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4829058 | Substituted bis-(4-aminophenyl)-sulfones | Helmut Pieper, Gerd Kruger, Klaus Noll, Johannes Keck, Uwe Lechner | 1989-05-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4829058 | Substituted bis-(4-aminophenyl)-sulfones | Helmut Pieper, Gerd Kruger, Klaus Noll, Johannes Keck, Uwe Lechner | 1989-05-09 |