SCHWIHAG AG
16Patents
13Active
16Granted
43Portfolio score
Filing activity: Apr 23, 1987 → Jul 17, 2019 · 4 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4770343A | Resilient rail fixing device for track installations | Fixed Constructions | 11 | Expired |
| US5562267A | Cross-ties for railroad track systems | Fixed Constructions | 10 | Expired |
| US7637438B2 | Non-positive fit elastic rail connection for track systems | Fixed Constructions | 5 | Active |
| US8608115B2 | Roller support for the point rail of a railroad switch | Fixed Constructions | 3 | Active |
| US8973846B2 | Rail fastening system | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US8297528B2 | Spring-type rail mount for track system | Fixed Constructions | 2 | Active |
| US8814058B2 | Plastic screw anchor for securing a rail to a railroad tie | Fixed Constructions | 1 | Active |
| US9290888B2 | Rail-fastening system | Fixed Constructions | 1 | Active |
| US10094070B2 | Rail fastening system | Fixed Constructions | 0 | Active |
| US11306442B2 | Rail fastening system | Fixed Constructions | 0 | Active |
| US5628454A | Foot support modification for railroad rails | Fixed Constructions | 0 | Expired |
| US10704205B2 | Holddown assembly for railway rail | Fixed Constructions | 0 | Active |
| US9458575B2 | Rail attachment system for junction areas | Fixed Constructions | 0 | Active |
| US8025241B2 | Hollow sleeper | Fixed Constructions | 0 | Active |
| US11293145B2 | Gripping mechanism for spindle-screw clipping machine | Fixed Constructions | 0 | Active |
| US8245984B2 | Adjustment device in railroad switches | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.