Inventor
Chun Fai Wong
Inventor
Hong Kong, CN
Overview
Patents· 25 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Pprimary
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters20%
H02KDynamo-electric machines19%
G01RMeasuring electric variables18%
G01DMeasuring not specially adapted for a specific variable13%
H10NElectric solid-state devices not otherwise provided for5%
G01KMeasuring temperature4%
H01LSemiconductor devices3%
H03FAmplifiers3%
H03KPulse technique3%
H10BElectronic memory devices3%
PatentTitleYear
D0907924Two-button toothbrush handle202110,763,766Magnetic sensor and an integrated circuit202010,677,664Single-temperature-point temperature sensor sensitivity calibration202010,527,454Magnet sensor, motor assembly and application apparatus202010,483,830Magnetic sensor integrated circuit and motor component201910,469,005Magnetic sensor and an integrated circuit201910,454,397Magnetic sensor integrated circuit, motor assembly and application apparatus201910,439,529Motor component, application device and sensor integrated circuit201910,374,534Magnetic sensor integrated circuit, motor assembly and application apparatus201910,305,400Magnetic sensor integrated circuit, motor assembly and application device201910,199,965Magnetic sensor integrated circuit, motor assembly and application apparatus201910,153,717Magnetic sensor integrated circuit, motor assembly and application device20189,973,121Magnetic sensor and an integrated circuit20189,966,883Magnetic sensor and an integrated circuit20189,954,469Magnetic sensor and an integrated circuit20189,716,453'Magnetic sensor and an integrated circuit'20179,696,182'Magnetic sensor and an integrated circuit'20179,692,329'Magnetic sensor and an integrated circuit'20179,661,695'Low-headroom constant current source for high-current applications'20179,638,584'Differential temperature sensor with sensitivity set by current-mirror and resistor ratios without limiting DC bias'20178,864,377'CMOS temperature sensor with sensitivity set by current-mirror and resistor ratios without limiting DC bias'20148,797,776'Diode-less full-wave rectifier for low-power on-chip AC-DC conversion'20148,258,852'Bootstrapped high-side driver control without static DC current for driving a motor bridge circuit'20128,179,455'Optical black-level cancellation for optical sensors using open-loop sample calibration amplifier'20127,659,780'Gain control circuit'2010Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2010–2014Patents assigned to HK APPLIED SCIENCE & TECH RES (5)· patent assignee history
2010–2020Based in Hong Kong, CN· patent location history
2012–2014Patents assigned to KWONG KWOK KUEN DAVID (4)· patent assignee history
2012–2014Patents assigned to WONG CHUN FAI (4)· patent assignee history
2017–2020Patents assigned to JOHNSON ELECTRIC SA (14)· patent assignee history
2019–2020Patents assigned to JOHNSON ELECTRIC INT AG (9)· patent assignee history
2021Based in Eindhoven, NL· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| JOHNSON ELECTRIC SA | 14 | 2017–2020 |
| JOHNSON ELECTRIC INT AG | 9 | 2019–2020 |
| HK APPLIED SCIENCE & TECH RES | 5 | 2010–2014 |
| KWONG KWOK KUEN DAVID | 4 | 2012–2014 |
| WONG CHUN FAIself | 4 | 2012–2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hong Kong, CN | 24 | 2010–2020 |
| Eindhoven, NL | 1 | 2021 |