Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE33079 | Homopolymerization of acetylene substituted polyimide polymers | Abraham L. Landis, Leroy J. Miller | 1989-10-03 |
| 4864016 | Polyimide composition and method for protecting photoreactive cells | Preston S. DuPont | 1989-09-05 |