Inventor · Boston, MA, US

Fred F. Chen

79Patents
17h-index
33Co-inventors
84Inventor score

Filing activity: Oct 23, 1998 → Jul 20, 2022

Most-cited inventions

PatentTitleAreaCited byStatus
US7308058B2 Transparent multi-mode PAM interface Electricity 80 Expired
US6652927B1 Simulated christmas tree Mechanical Engineering; Lighting; Heating 70 Expired
US8319437B2 Modular LED lighting system Electricity 68 Active
US7126378B2 High speed signaling system with adaptive transmit pre-emphasis Electricity 65 Expired
US7030657B2 High speed signaling system with adaptive transmit pre-emphasis and reflection cancellation Electricity 55 Expired
US7233164B2 Offset cancellation in a multi-level signaling system Electricity 53 Expired
US7292629B2 Selectable-tap equalizer Electricity 40 Expired
US7873115B2 Selectable-tap equalizer Electricity 34 Active
US6133360A Polycarbonate resin blends containing titanium dioxide Chemistry; Metallurgy 23 Expired
US7199615B2 High speed signaling system with adaptive transmit pre-emphasis and reflection cancellation Electricity 21 Expired
US7627029B2 Margin test methods and circuits Electricity 20 Active
US7508871B2 Selectable-tap equalizer Electricity 19 Active
US8023584B2 Selectable-tap equalizer Electricity 19 Active
US7126510B2 Circuit calibration system and method Electricity 18 Expired
US7292637B2 Noise-tolerant signaling schemes supporting simplified timing and data recovery Electricity 18 Expired
US8861667B1 Clock data recovery circuit with equalizer clock calibration Electricity 17 Active
US8542509B2 Multi-path power factor correction Emerging Cross-Sectional Technologies 17 Active
US8989249B2 High-speed signaling systems with adaptable pre-emphasis and equalization Emerging Cross-Sectional Technologies 16 Active
US7362800B1 Auto-configured equalizer Electricity 14 Expired
US7423454B2 High speed signaling system with adaptive transmit pre-emphasis Electricity 13 Active
US8183887B2 High speed signaling system with adaptive transmit pre-emphasis Electricity 12 Active
US8467437B2 Selectable-Tap Equalizer Electricity 10 Active
US9106397B2 Selectable-tap equalizer Electricity 9 Active
US8848399B2 Very high frequency switching resonant synchronous rectification Emerging Cross-Sectional Technologies 9 Active
US10720832B2 Circuits and methods for measuring the output current of a switched capacitor regulator Emerging Cross-Sectional Technologies 8 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.