Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879044 | Highly aromatic anisotropic polyurea/urethane membranes and their use for the separation of aromatics from non aromatics | Bernd A. Koenitzer, Robert C. Schucker | 1989-11-07 |
| 4828773 | Highly aromatic anisotropic polyurea/urethane membranes and their use for the separation of aromatics from non-aromatics | Bernd A. Koenitzer, Robert C. Schucker | 1989-05-09 |