Keming Chen
41Patents
11h-index
33Co-inventors
75Inventor score
Filing activity: Sep 30, 1983 → Jun 5, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7710322B1 | Extensible object location system and method using multiple references | Physics | 69 | Active |
| US5414613A | Soft switching active snubber for semiconductor circuit operated in discontinuous conduction mode | Emerging Cross-Sectional Technologies | 52 | Expired |
| US5235501A | High efficiency voltage converter | Electricity | 42 | Expired |
| US7768807B2 | Bidirectional no load control with overshoot protection | Electricity | 29 | Active |
| US5828559A | Soft switching active snubber | Emerging Cross-Sectional Technologies | 29 | Expired |
| US7492316B1 | Wireless time reference system and method | Physics | 28 | Active |
| US6108046A | Automatic detection of HDTV video format | Electricity | 26 | Expired |
| US7167528B2 | Modulation system for modulating data onto a carrier signal with offsets to compensate for doppler effect and allow a frequency synthesizing system to make steps equal to channel bandwidth | Electricity | 16 | Expired |
| US9308305B2 | Implantable blood pump with integrated controller | Human Necessities | 16 | Active |
| US7393236B2 | Integrated thermal and electrical connection system for power devices | Electricity | 15 | Expired |
| US5784413A | Direct digital synthesis frequency-agile QPSK modulator | Electricity | 15 | Expired |
| US7312653B2 | NMOS reverse battery protection | Electricity | 8 | Expired |
| US4549218A | On-screen display | Electricity | 7 | Expired |
| US4543614A | Video sync validity detector | Electricity | 7 | Expired |
| US6850921B1 | Method for cascading vehicle system targets to component level design objectives | Physics | 6 | Expired |
| US9077237B2 | Composite AC-to-DC power converter with boosting capabilities | Electricity | 5 | Active |
| US8022569B2 | Systems and methods for discharging bus voltage using semiconductor devices | Electricity | 5 | Active |
| US4624014A | Signal-seeking tuning system with a seaching mode activated by the user's operation of a manual band switch | Electricity | 4 | Expired |
| US4544954A | Television receiver with high voltage protection circuit | Electricity | 4 | Expired |
| US7859381B2 | Autotransformer using printed wireboard | Electricity | 3 | Active |
| US8063826B2 | Wireless time reference system and method | Physics | 2 | Active |
| US8149169B1 | Extensible object location system and method using multiple references | Physics | 2 | Active |
| US7177606B2 | Control system for controlling an output signal power level of a wireless transmitter | Electricity | 2 | Expired |
| US9360547B2 | Extensible object location system and method using multiple references | Physics | 2 | Active |
| US7362077B2 | Pre-charge method for isolated boost converter | Electricity | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.