Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5435574 | Contactless pressurizing-gas shaft seal | Hans-Wilhelm Laarmann, Ralf Dedeken, Gustav Maser | 1995-07-25 |
| 5368314 | Contactless pressurizing-gas shaft seal | Hans-Wilhelm Laarmann, Ralf Dedeken, Gustav Maser | 1994-11-29 |
| 5158431 | Shaft seal assembly, especially for high-pressure turbocompressors | Helmut Schellong, Hans-Wilhelm Laarmann, Gustav Maser, Ralf Dedeken | 1992-10-27 |
| 5149249 | Shaft seal assembly, especially for high-pressure turbocompressors | Helmut Schellong, Hans-Wilhelm Laarman, Gustav Maser, Ralf Dedeken | 1992-09-22 |
| 5092612 | Contactless pressurizing-gas shaft seal | Gustav Maser, Hans-Wilhelm Laarmann, Ralf Dedeken | 1992-03-03 |
| 4908081 | Process for producing a sliding body | Juergen Heinrich, Axel Krauth, Heinz Peeken | 1990-03-13 |
| 4714257 | Annular sliding body for a sliding seal and process for use thereof | Juergen Heinrich, Axel Krauth, Heinz Peeken | 1987-12-22 |