Electro-Craft Corporation
11Patents
0Active
11Granted
33Portfolio score
Filing activity: Mar 10, 1975 → Oct 1, 1984
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4086519A | Hall effect shaft angle position encoder | Emerging Cross-Sectional Technologies | 62 | Expired |
| US4651068A | Brushless motor control circuitry with optimum current vector control | Electricity | 61 | Expired |
| US4208621A | Brushless DC motor control system | Electricity | 34 | Expired |
| US4322646A | Flux focussed DC motor and method for assembly | Electricity | 33 | Expired |
| US4184071A | Modular encoder | Electricity | 30 | Expired |
| US4426606A | Emergency stop device for brushless motors | Electricity | 24 | Expired |
| US3989992A | Pulse width modulated control system | Electricity | 19 | Expired |
| US4498037A | Velocity servo controller | Physics | 18 | Expired |
| US4088943A | Brushless DC tachometer circuit | Physics | 13 | Expired |
| US4417141A | Optical shaft angle encoder | Physics | 11 | Expired |
| US4285595A | Modular encoder | Electricity | 8 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.