Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5373081 | Polyether ketones and polyether sulfones based on phenylindane, and the use thereof for optical systems | Dazhong Yang, Gerhard Maier, Michael-Joachim Brekner, Freddy Helmer-Metzmann | 1994-12-13 |
| 5300625 | Heteroaromatic polyether | Brigitte Helmreich, Klaus Burger, Gerhard Maier, Reinhold Hecht | 1994-04-05 |