Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5683612 | Spin finishes for synthetic filament fibers | Paul Birnbrich, Norbert Bialas, Raymond Mathis | 1997-11-04 |
| 5610242 | Process for modifying polymers | Paul Birnbrich, Herbert Fischer, Joerg-Dieter Klamann, Ludwig Schieferstein | 1997-03-11 |