Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855391 | High temperature stable polyetherimides from oxydiphthalic dianhydride and a mixture of m- and p-phenylene diamines and diaminodiphenyl ether | Donald R. Berdahl, James Anthony Cella | 1989-08-08 |
| 4808686 | Silicone-polyimides, and method for making | James Anthony Cella, Patrick E. Gallagher | 1989-02-28 |