PROLIFIC TECHNOLOGY INC.
73Patents
48Active
73Granted
51Portfolio score
Filing activity: Jul 2, 2001 → Dec 15, 2023 · 18 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6631098B2 | Dual-mode MP3 player | Physics | 43 | Expired |
| US6737860B2 | System for controlling rotational speed of fan according to reference clock frequency | Electricity | 30 | Expired |
| US6522093B1 | Method for driving a brushless DC motor | Electricity | 28 | Expired |
| US7075267B1 | Space vector-based current controlled PWM inverter for motor drives | Electricity | 25 | Expired |
| US6862643B2 | USB compound device operates a plurality of devices by using the same USB logic circuit and the method for implementation thereof | Physics | 22 | Expired |
| US7170439B1 | Self-calibration circuit for capacitance mismatch | Electricity | 19 | Expired |
| US7254650B2 | Method for determining transmitting mode of a memory card with multiple interface functions | Physics | 19 | Expired |
| US7148720B2 | Impedance matching circuit and method | Electricity | 12 | Expired |
| US7924209B2 | Self-calibration circuit and method for capacitors | Electricity | 11 | Active |
| US7898210B2 | To obtain the three-phase current via adjusting width of pulses with single DC-link current sensor | Electricity | 11 | Active |
| US7761647B2 | Storage device with automatic interface-switching function | Physics | 7 | Active |
| US6810202B2 | Apparatus for controlling rotational speed of motor | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7649329B2 | Method and circuit for controlling motor and brushless motor system using the same | Electricity | 5 | Active |
| US7906952B2 | Voltage regulator | Physics | 5 | Active |
| US7395155B2 | Global positioning system receiver and correlating circuit thereof | Physics | 4 | Expired |
| US7895386B2 | USB interface provided with host/device function and its control method | Physics | 4 | Active |
| US7441165B2 | Read-only memory and operational control method thereof | Physics | 3 | Active |
| US7310739B2 | Universal serial bus and method for transmitting serial clock and serial data signals during power-saving mode | Physics | 3 | Expired |
| US7596655B2 | Flash storage system with data storage security | Physics | 3 | Active |
| US7526014B2 | Correlator for spread spectrum receiver | Electricity | 3 | Active |
| US6933699B2 | Motor drive circuit and method with frequency setting and correcting functions | Electricity | 3 | Expired |
| US6940329B2 | Hysteresis circuit used in comparator | Electricity | 3 | Expired |
| US7240369B2 | Plug and play device and access control method therefor | Physics | 3 | Expired |
| US7194057B2 | System and method of oversampling high speed clock/data recovery | Electricity | 3 | Expired |
| US7725626B2 | Multi-media KVM switch | Physics | 3 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.