Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6409494 | Device for the extrusion of multi-layer plastic films, boards or tubes | — | 2002-06-25 |
| 5384080 | Method and apparatus for the reduction of the sag and/or of the varying stress profile of a flattened tubular film web produced by a blown film process | Werner Feistkorn | 1995-01-24 |
| 5318427 | Apparatus for controlling the flow of air for external cooling of an extruder tubular film | — | 1994-06-07 |
| 5258148 | Process for controlling the degree of orientation of tubular films | Klemens Sensen, Werner Feistkorn, Hans-Udo Beckmann | 1993-11-02 |