Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6773383 | Vibration damping roll | Hans-Joachim Raida | 2004-08-10 |
| 6119404 | Device for avoiding squeaking noises on a window pane | Martin Abendschein | 2000-09-19 |
| 6016351 | Directed radiator with modulated ultrasonic sound | Hans-Joachim Raida | 2000-01-18 |
| 5528005 | Oscillation absorber for the absorption of structure-borne sound | Klaus Zimmerman | 1996-06-18 |
| 4750693 | Device for reducing the frictional drag of moving bodies | Gerhard Lobert, Hans Spies | 1988-06-14 |
| 4417427 | Method and apparatus for damping vibrations in large structures, such as buildings | — | 1983-11-29 |
| 4399851 | Wheel tire with noise absorbing means | — | 1983-08-23 |
| 4392522 | Tire with open cell foam insert for reducing noise | — | 1983-07-12 |
| 4325458 | Apparatus for reducing the exhaust noise of internal combustion engines or the like | Eckehard Laudien | 1982-04-20 |
| 4325461 | Noise reducing resonators, or so-called silators | — | 1982-04-20 |
| 4275801 | Noise and heat insulating structural component | — | 1981-06-30 |
| 4232762 | Wide-band vibration damper | — | 1980-11-11 |
| 4228869 | Variable volume resonators using the Belleville spring principle | — | 1980-10-21 |
| 4183572 | Railway flanged wheel vibration dampening assembly | Helmut Albrecht, Helmut Hassel | 1980-01-15 |