Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4801502 | Non-flammable, high-temperature resistant polyimide fibers made by a dry spinning method | Klaus Weinrotter, Heinrich Schmidt, Siegfried Baumann, Johann Kalleitner | 1989-01-31 |