ContiTech Luftfedersysteme GmbH
🏢 View company profile →65Patents
32Active
65Granted
45Portfolio score
Filing activity: Nov 4, 1997 → Jul 27, 2021 · 12 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5954316A | Rolling-lobe air spring | Performing Operations; Transporting | 34 | Expired |
| US6073491A | Method and arrangement for making contactless distance and pressure measurements within an air spring | Physics | 24 | Expired |
| US5936161A | Arrangement for making contactless distance measurements | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US6637269B2 | Motor vehicle air spring system having an ultrasonic measurement arrangement | Physics | 16 | Expired |
| US6161821A | Hydropneumatic spring strut | Performing Operations; Transporting | 15 | Expired |
| US6931930B2 | Method for determining the pressure present in the interior space of an air spring for a motor vehicle and apparatus for carrying out the method | Physics | 11 | Expired |
| US6032535A | Arrangement for making contactless distance and pressure measurements within an air spring | Physics | 10 | Expired |
| US6817597B1 | Spring-and-shock absorber system having differential roll bellows | Performing Operations; Transporting | 10 | Expired |
| US6089552A | Air spring system | Performing Operations; Transporting | 10 | Expired |
| US6494980B1 | Device for incorporating individual reinforcing threads into an unfinished tube and process for manufacturing a thread-reinforced unfinished tube with the aid of this device | Performing Operations; Transporting | 9 | Expired |
| US8220785B2 | Rolling-lobe air spring having a drop base ring clamp contour | Mechanical Engineering; Lighting; Heating | 6 | Active |
| US6412758B1 | Rolling-lobe air spring | Performing Operations; Transporting | 5 | Expired |
| US6827341B2 | Spring system | Performing Operations; Transporting | 5 | Expired |
| US7934458B2 | Railway bogie | Mechanical Engineering; Lighting; Heating | 5 | Active |
| US6905113B2 | Double rolling-lobe spring arrangement | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US6375170B1 | Spring system | Performing Operations; Transporting | 4 | Expired |
| US8047139B2 | Railway bogie | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US7063308B2 | Air spring resilient member | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US6223600A | Air spring arrangement having a device for making ultrasonic distance measurements therein | Physics | 3 | Expired |
| US6783121B2 | Rolling-lobe spring | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US9334916B2 | Roll-off piston for an air spring rolling-lobe flexible member | Performing Operations; Transporting | 3 | Active |
| US7681868B2 | Air spring having a roll-off piston and a rolling-lobe flexible member having at least one attachment part vulcanized thereon | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US7226044B2 | Rolling-lobe air spring | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US6945567B2 | Flexible pipe connecting unit | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US8302945B2 | Cover assembly for a vehicle air spring | Performing Operations; Transporting | 2 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.