Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5694961 | Device and method for changing the flow resistance of a fluid flow control device | Helmut Heinzmann, Wolfgang Ruf | 1997-12-09 |
| 5688374 | Headbox and manifold system for producing a multi-ply paper web | Hans-Peter Sollinger | 1997-11-18 |
| 5639349 | Method and device for quality improvement in multilayer and multiply papers | Hans-Peter Sollinger, Udo Grossmann, Dieter Egelhof | 1997-06-17 |
| 5639352 | Headbox lamellae and method for reducing turbulence thereabout | Wolfgang Ruf, Helmut Heinzmann | 1997-06-17 |
| 5622603 | Influencing the jet velocity in the multilayer headbox | Albrecht Meinecke, Dieter Egelhof, Wolfgang Ruf, Helmut Heinzmann, Hans-Peter Arledter | 1997-04-22 |