Railpower Technologies Corp.
15Patents
5Active
15Granted
35Portfolio score
Filing activity: Apr 26, 2000 → Jun 13, 2007 · 5 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7349797B2 | Emission management for a hybrid locomotive | Emerging Cross-Sectional Technologies | 81 | Active |
| US6308639A | Hybrid battery/gas turbine locomotive | Emerging Cross-Sectional Technologies | 70 | Expired |
| US7304445B2 | Locomotive power train architecture | Emerging Cross-Sectional Technologies | 70 | Expired |
| US7309929B2 | Locomotive engine start method | Emerging Cross-Sectional Technologies | 56 | Active |
| US6984946B2 | Method for monitoring and controlling traction motors in locomotives | Emerging Cross-Sectional Technologies | 41 | Expired |
| US7507500B2 | Design of a large battery pack for a hybrid locomotive | Emerging Cross-Sectional Technologies | 37 | Expired |
| US7518254B2 | Multiple prime power source locomotive control | Emerging Cross-Sectional Technologies | 37 | Active |
| US7554278B2 | Load-lifting apparatus and method of storing energy for the same | Emerging Cross-Sectional Technologies | 34 | Active |
| US7124691B2 | Method for monitoring and controlling locomotives | Emerging Cross-Sectional Technologies | 33 | Expired |
| US6812656B2 | Sequenced pulse width modulation method and apparatus for controlling and powering a plurality of direct current motors | Emerging Cross-Sectional Technologies | 26 | Expired |
| USD464622S1 | Battery terminals | General | 22 | Expired |
| US7514807B2 | Alternator boost method | Emerging Cross-Sectional Technologies | 18 | Active |
| US7084602B2 | Predicting wheel slip and skid in a locomotive | Emerging Cross-Sectional Technologies | 15 | Expired |
| US7064507B2 | Managing wheel skid in a locomotive | Emerging Cross-Sectional Technologies | 13 | Expired |
| US7467830B2 | Managing wheel slip in a locomotive | Emerging Cross-Sectional Technologies | 11 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.