Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886734 | Electron-beam positive polyimide | Andrew N. Dasheff, Frank B. Kaufman | 1989-12-12 |
| 4877718 | Positive-working photosensitive polyimide operated by photo induced molecular weight changes | Andrew N. Dasheff, Frank B. Kaufman | 1989-10-31 |