Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8895123 | Polyolefin multilayer pipe | Carl-Gustaf Ek, Hans Fredrik SANDBERG, Siegfried Liedauer | 2014-11-25 |
| 8722807 | Polymer composition for injection moulding | Mats Bäckman, Bo Hovgard, Siegfried Liedauer, David Walton | 2014-05-13 |
| 8461267 | Propylene polymers with improved properties | Franz Ruemer, Stefan Schiesser, Siegfried Liedauer | 2013-06-11 |
| 8415447 | Polyolefin coated steel pipes | Cecilia Rydin, Tony Lindstroem, Siegfried Liedauer | 2013-04-09 |
| 8394475 | Industrial polyolefin piping system | Siegfried Liedauer, Carl-Gustaf Ek | 2013-03-12 |
| 8389089 | Propylene polymer pipes for pipelines | Siegfried Liedauer, Carl-Gustaf Ek | 2013-03-05 |