Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6260891 | Press-fitting for non removable tube coupling | Rainer Franzen, Thomas Gigowski | 2001-07-17 |
| 6241290 | Pipe coupling | Thomas Gigowski, Michael Berane, Karl-Heinz Hartings, Johannes Schurr | 2001-06-05 |
| 6224114 | Pipe joint | Rainer Franzen | 2001-05-01 |
| 6131956 | Pipe coupling | Thomas Gigowski, Michael Berane, Karl-Heinz Hartings, Johannes Schurr | 2000-10-17 |
| 5484172 | Pipe connection | Heinz Unewisse | 1996-01-16 |
| 5168618 | Method of forming a crimped sleeve to tube joint | Heinz Unewisse | 1992-12-08 |
| 5121625 | Tool for forming a crimped sleeve to tube joint | Heinz Unewisse | 1992-06-16 |
| 5007667 | Crimped sleeve to tube joint | Heinz Unewisse | 1991-04-16 |