Issued Patents All Time
Showing 51–75 of 107 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5249853 | Hydraulic anti-lock brake system | Helmut Steffes | 1993-10-05 |
| 5231913 | Process for the adjustment of a brake power booster travel sensor | Helmut Steffes, Stefan Risch | 1993-08-03 |
| 5215359 | Hydraulic anti-locking brake unit | Jochen Burgdorf, Helmut Steffes, Joachim Maas, Dieter Dinkel | 1993-06-01 |
| 5209552 | ABS pump pressure controls pressure limiting valve and loading valve | Helumut Steffes | 1993-05-11 |
| 5195419 | Method for assembling a piston-and-cylinder unit and force transmission element | Helmut Steffes | 1993-03-23 |
| 5192120 | Brake pressure control system with an electrical motor operating a pump and control valve | Peter Volz, Erhard Beck, Andre F. L. Goossens | 1993-03-09 |
| 5148834 | Piston-type pressure accumulator for traction slip controlled brake systems and switching arrangement for same | Hajo Pickel | 1992-09-22 |
| 5141295 | Brake power booster with diaphragm position sensing devices | Jochen Burgdorf, Helmut Steffes, Peter Volz | 1992-08-25 |
| 5115186 | Travel sensor for determining the position of a member such as a brake pedal | Helmut Steffes, Juergen Rausch, Stefan Risch | 1992-05-19 |
| 5050382 | Tandem master cylinder for hydraulic brake systems | Jochen Burgdorf, Helmut Steffes | 1991-09-24 |
| 5040853 | Electrohydraulic pressure control system | Jochen Burgdorf, Peter Volz, Arnim Vellmer | 1991-08-20 |
| 5029952 | Slip-controlled brake system with a master brake cylinder | Jochen Burgdorf, Helmut Steffes | 1991-07-09 |
| 5014514 | Method for assembling a piston-and-cylinder unit with a force transmission element | Helmut Steffes, Holger V. Hayn | 1991-05-14 |
| 5005350 | Tandem master cylinder | Helmut Steffes, Holger von Hayn, Thomas Meier | 1991-04-09 |
| 4964681 | Anti-lock hydraulic brake system | Jochen Burgdorf, Helmut Steffes, Holger von Hayn, Peter Volz, Hans Wupper +5 more | 1990-10-23 |
| 4951470 | Tandem master cylinder | Helmut Steffes, Philipp Kilb | 1990-08-28 |
| 4950027 | Brake pressure regulator | Helmut Steffes | 1990-08-21 |
| 4929038 | Hydraulic unit | Helmut Steffes | 1990-05-29 |
| 4905570 | Hydraulic power booster for a vehicle brake system | Helmut Steffes | 1990-03-06 |
| 4900105 | Pressure fluid-activated brake system including an anti-locking traction slip control | Jochen Burgdorf, Helmut Steffes, Peter Volz, Andre F. L. Goossens | 1990-02-13 |
| 4861117 | Brake pressure regulator | Helmut Steffes | 1989-08-29 |
| 4848847 | Pressure supply system especially for brake systems of motor vehicles | Helmut Steffes, Franz Latka | 1989-07-18 |
| 4840436 | Anti-lock brake system with traction slip control | Jochen Burgdorf, Lutz Weise, Norbert Ocvirk, Horst Becker, Otto Determann | 1989-06-20 |
| 4838305 | Pressure differential valve | Helmut Steffes, Edwin Czarnetzki | 1989-06-13 |
| 4828333 | Slip-controlled brake system | Helmut Steffes | 1989-05-09 |