Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5489667 | Polyetheresteramides and process for making and using the same | Helmut Knipf, Karl-Heinz Hapelt | 1996-02-06 |
| 5459230 | Copolyamide melt adhesives for heat sealing textiles | Karl-Heinz Hapelt | 1995-10-17 |
| 5254641 | Polyurethane films and their use for bonding | Patrick Alex, Andre Piard | 1993-10-19 |
| 4483975 | Copolyetheresteramides, process for their production and their use for the heat-sealing of textiles | Karl-Heinz Hapelt, Helmut Knipf | 1984-11-20 |