Sevcon Limited
23Patents
16Active
23Granted
44Portfolio score
Filing activity: Jul 12, 1974 → Apr 19, 2018
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4214290A | Control circuit for electromagnetically operated contactor | Electricity | 13 | Expired |
| US4104571A | Pulse controllers | Electricity | 11 | Expired |
| US4042865A | Separately excited D.C. motors | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4054817A | Pulse controllers | Electricity | 6 | Expired |
| US9654032B2 | Electric motor and motor controller | Emerging Cross-Sectional Technologies | 5 | Active |
| US4093980A | D.C. Electrical circuit means | Electricity | 5 | Expired |
| USD850487S1 | Electric motor controller | General | 4 | Active |
| USD831073S1 | Electric motor controller | General | 4 | Active |
| US4110668A | Thyristor pulse controller for plural loads | Electricity | 3 | Expired |
| US9806657B2 | Method and apparatus for control of switched reluctance motors | Electricity | 2 | Active |
| USD821446S1 | Electric motor controller | General | 2 | Active |
| US6441509B1 | Controller for battery-operated vehicle | Emerging Cross-Sectional Technologies | 2 | Expired |
| US9527387B2 | Vehicle controller and method of controlling a vehicle | Emerging Cross-Sectional Technologies | 1 | Active |
| US10736206B2 | Power electronics assembly | Electricity | 1 | Active |
| US9919606B2 | Vehicle controller and method of controlling a vehicle | Emerging Cross-Sectional Technologies | 1 | Active |
| US11121631B2 | DC-DC converter | Emerging Cross-Sectional Technologies | 1 | Active |
| US10985686B2 | Methods and apparatus for the provision of AC power | Emerging Cross-Sectional Technologies | 0 | Active |
| US11043878B2 | Stator assembly for cooling an electric motor | Electricity | 0 | Active |
| US10749283B2 | Electronics assembly for coupling two circuit boards | Electricity | 0 | Active |
| US11059372B2 | Traction control method and apparatus | Emerging Cross-Sectional Technologies | 0 | Active |
| US10761492B2 | Electric motor and motor controller | Emerging Cross-Sectional Technologies | 0 | Active |
| US10333437B2 | Motor control apparatus and method | Electricity | 0 | Active |
| US9793834B2 | Motor control apparatus and method | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.