Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6749948 | Polyolefin film with peelable outer layer | Bernd Sperlich, Hans Wunderlich, Helmut Wagner | 2004-06-15 |
| 6645609 | Peelable, sealable polyolefinic multilayered film and its use as a packaging film | Bernd Sperlich, Helmut Wagner, Hans Wunderlich | 2003-11-11 |
| 6489038 | Heat-laminable multi-layer film | Bernd Sperlich | 2002-12-03 |
| 5193791 | Three point parallels | — | 1993-03-16 |
| 4965975 | Means for erecting a wall of wall blocks, preferably of glass | — | 1990-10-30 |