Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6543728 | Cross frog | Alfred Kais, Stefan Schmedders | 2003-04-08 |
| 6409092 | Superstructure construction | Albrecht Demmig, Hans-Ulrich Dietze, Hubertus Hohne | 2002-06-25 |
| 6270018 | Track or method for aligning a rail track section | Alfred Kais, Burkhard Zillien | 2001-08-07 |
| 6068196 | Expansion joint for part of a railway track | Hubertus Hohne, Alfred Kais, Erich Nuding | 2000-05-30 |
| 6062144 | Method and means for the elastic bending of a support for a flexible switch | Hans-Ulrich Dietze, Erich Nuding, Stefan Schmedders, Rudiger Ziethen | 2000-05-16 |
| 6027034 | Superstructure construction | Albrecht Demmig, Hans-Ulrich Dietze, Hubertus Hohne | 2000-02-22 |
| 5645216 | Bearing for a part of a railroad track | Albrecht Demmig, Hans-Ulrich Dietze, Alfred Kais, Erich Nuding | 1997-07-08 |
| 5605281 | Rail support system | Hubertus Hohne, Alfred Kais, Erich Nuding | 1997-02-25 |
| 5590833 | Expansion joint for part of a railway track | Hubertus H ohne, Alfred Kais, Erich Nuding | 1997-01-07 |
| 5582108 | Rail junction | Erich Nuding | 1996-12-10 |
| 5522570 | Rail section | Hubertus Hohne, Alfred Kais, Erich Nuding | 1996-06-04 |
| 5390881 | Roller assembly for a switch tongue used with a stock rail | Erich Nuding, Hans-Ulrich Dietze | 1995-02-21 |
| 5295624 | Contact surfaces of a track part and railway wheel | Ruediger Ziethen, Erich Nuding | 1994-03-22 |
| 5222700 | Device for locking a switch blade | Alfred Kais, Erich Nuding | 1993-06-29 |
| 5195703 | Device for locking a switch blade with a stock rail | Alfred Kais, Erich Nuding | 1993-03-23 |
| 5184791 | Frog tip that can be shifted relative to the wing rails | Alfred Kais, Erich Nuding | 1993-02-09 |
| 5158414 | Rail attaching device permitting longitudinal rail displacement | Alfred Kais, Erich Nuding | 1992-10-27 |
| 4925135 | Arrangement for controlled guidance of a wheel axle or of a bogie of a rail vehicle passing over points | Rudiger Ziethen, Alfred Kais, Erich Nuding | 1990-05-15 |