Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5106938 | Melt crystalline polyetherimides | Dana Craig Bookbinder, Edward N. Peters, Donald R. Berdahl | 1992-04-21 |
| 4933469 | Method for preparing oxybisphthalimides | Donald R. Berdahl, Susan A. Nye | 1990-06-12 |
| 4808731 | Method for making oxydiphthalic anhydride | Donald R. Berdahl | 1989-02-28 |