Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4854021 | Stufferbox crimper and process for preparing crimped synthetic fibers | Christian Pieper, Rolf-Burkhard Hirsch, Hermann-Josef Jungverdorben, Jakob Breuer | 1989-08-08 |
| 4842793 | Process for wetting thread bundles with liquids | Rolf-Burkhard Hirsch, Joachim Dross, Hermann-Josef Jungverdorben | 1989-06-27 |
| 4810448 | Processes for the production of dry-spun polyacrylonitrile profiled fibres and filaments | Kurt Bernklau, Toni Herbertz, Hermann-Josef Jungverdorben, Hans K. Burghartz | 1989-03-07 |
| 4810449 | Process for the production of hydrophilic polyacrylonitrile filaments or fibers | Frank Druschke, Peter Kleinschmidt | 1989-03-07 |