Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857613 | Preparation of homopolymers and copolymers of propene using a Ziegler-Natta catalyst system | Juergen Kerth, Rainer Hemmerich | 1989-08-15 |
| 4843132 | Preparation of homo- and copolymers of propene using a Ziegler-Natta catalyst system | Rainer A. Werner | 1989-06-27 |