Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9322475 | Frictionless shaft seal | Jürgen Kurth, Wolfgang Irmen, Willy Seewald | 2016-04-26 |
| 8746199 | Valve stem seal | — | 2014-06-10 |
| 6227548 | Seal for machine parts that reciprocate relative to one another | — | 2001-05-08 |
| 6164659 | Piston rod seal | Siegfried Pietsch, Bernd Stephan | 2000-12-26 |
| 6123054 | Sealing ring for reciprocating machine parts | — | 2000-09-26 |