Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9869394 | Sealing system and sealing ring | Carlos Fangauf, Lars Ziemen, Dieter Von Borstel, Ivan Ristic, Guido Wuestenhagen | 2018-01-16 |
| 9447883 | Seal for sealing shafts | Lars Ziemen, Carlos Fangauf, Dieter Von Borstel, Guido Wuestenhagen, Ivan Ristic | 2016-09-20 |
| 6514108 | OCEAN-GOING SHIP, AND AN OCEAN-GOING VESSEL WITH A STERN TUBE SEAL ARRANGEMENT FOR SEALING A STERN TUBE FOR A PROPELLER DRIVE SHAFT, AND AN ARRANGEMENT FOR SEALING PROPELLER DRIVE SHAFTS IN AN OCEAN-GOING VESSEL | — | 2003-02-04 |
| 5683278 | Stern tube seal with a pressure control system to adjust to the changing draft of ocean-going ships | Gunter Pietsch, Holger Hillig, Bodo Voss | 1997-11-04 |
| 5643026 | Safety device for seal systems for propeller shafts on ships | Gunter Pietsch, Holger Hillig, Bodo Voss | 1997-07-01 |
| 5624290 | Seal arrangement for propeller shafts of ships | Gunter Pietsch | 1997-04-29 |
| 5492492 | Seal arrangement for propeller shafts of ships | Gunter Pietsch | 1996-02-20 |
| 5411273 | Lip seal to seal a shaft, in particular a ship's propeller shaft | Gunter Pietsch | 1995-05-02 |
| 5374208 | Ship, in particular deep draft vessel having concentric, contra-rotating propellers | Gunter Pietsch | 1994-12-20 |
| 5356320 | Seal arrangement for propeller shafts of ships | Gunter Pietsch | 1994-10-18 |
| 5308269 | Seal device for rotating shafts, in particular stern tube seal for propeller shafts of a ship | Gunter Pietsch | 1994-05-03 |
| 5267736 | Sealing apparatus for rotating shafts, in particular stern tube seal for the propeller shaft of a ship | Gunter Pietsch | 1993-12-07 |
| 5219434 | Sealing arrangement for rotating propeller shafts of ships | Gunter Pietsch | 1993-06-15 |
| 5209497 | Sealing apparatus for rotating shafts, in particular stern tube seal for the propeller shafts of a ship | Gunter Pietsch | 1993-05-11 |
| 5137116 | Sealing device for a rotating shaft of a ship propeller shaft | Gunter Pietsch | 1992-08-11 |
| 4448425 | Shaft seal assembly with inflatable annular member | — | 1984-05-15 |