Inventor
Hengchun Mao
Inventor
Plano, TX, US
Overview
Patents· 80 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Mprimary
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems35%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications23%
H02JElectric power networks10%
Y10TTechnical subjects covered by former us classification5%
H02KDynamo-electric machines3%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters3%
Y02PClimate change mitigation technologies in the production or processing of goods3%
G05FSystems for regulating electric or magnetic variables2%
H01FMagnets2%
H02HEmergency protective circuit arrangements2%
PatentTitleYear
10,847,299Magnetic structures with self-enclosed magnetic paths202010,770,975Resonant power converters with switchable resonant modes202010,720,849High efficiency high frequency resonant power conversion202010,693,385High efficiency high frequency resonant power conversion202010,637,295Wireless power transfer system and method202010,566,922Dynamically reconfigurable motors and generators and systems with efficiency optimization202010,554,115Harmonic reduction apparatus for wireless power transfer systems202010,541,635Motor system and control method202010,505,487Motor/generator system and fault tolerant control method201910,505,591Self-canceling magnetic structures for transferring power and communication signals201910,454,312Wireless power transfer control apparatus and method201910,411,591Holdup time circuit and method for bridgeless PFC converter201910,411,596High efficiency power regulator and method201910,348,367Self-canceling magnetic structures for transferring power and communication signals201910,270,439High efficiency resonant power converters and resonant gate drivers201910,020,849Self-canceling magnetic structures for transferring power and communication signals20189,998,018Resonant converters and methods20189,991,779Harmonic reduction apparatus for wireless power transfer systems20189,991,742Zero voltage switching half-bridge converters20189,929,595'Wireless power transfer system and method'20189,906,147'Adaptive dead time control apparatus and method for switching power converters'20189,800,193'Dynamically reconfigurable motors and generators and systems'20179,755,534'High efficiency high frequency resonant power conversion'20179,627,972'Power converter package structure and method'20179,595,870'High efficiency high power density power architecture based on buck-boost regulators with a pass-through band'20179,590,495'Holdup time circuit and method for bridgeless PFC converter'20179,490,740'Dynamically reconfigurable motor and generator systems'20169,467,057'Resonant converters and methods'20169,436,192'Apparatus for PWM gate drive circuit'20169,344,042'High efficiency power amplifiers with advanced power solutions'20169,337,641'High efficiency power regulator and method'20169,240,748'Dynamically reconfigurable motor and generator systems'20169,190,911'Auxiliary resonant apparatus for LLC converters'20159,178,438'Apparatus for resonant converters'20159,122,287'Dual frequency control of buck-boost regulator with a pass through band'20159,088,215'Power converter package structure and method'20159,077,255'Resonant converters and methods'20158,970,067'Hybrid DC/DC converters and methods'20158,957,644'High efficiency high power density power architecture based on buck-boost regulators with a pass-through band'20158,908,393'Soft transition apparatus and method for switching power converters'20148,717,717'High efficiency power regulator and method'20148,670,250'Common mode noise reduction apparatus and method'20148,564,984'Soft switching DC/DC converters and methods'20138,385,032'High efficiency bridgeless PFC converter and method'20136,760,235'Soft start for a synchronous rectifier in a power converter'20046,674,658'Power converter including circuits for improved operational control of synchronous rectifiers therein'20046,574,124'Plural power converters with individual conditioned error signals shared on a current sharing bus'20036,501,194'Energy recovery snubber circuit for bidirectional power converter and method of operation thereof'20026,466,461'Method and circuit for reducing voltage level variation in a bias voltage in a power converter'20026,388,429'Controller for power factor corrector and method of operation thereof'20026,320,764'Regulation circuit for a power converter and method of operation thereof'20016,317,336'Current-fed dc/dc converter with multilevel transformer and method of operation thereof'20016,300,818'Temperature compensation circuit for semiconductor switch and method of operation thereof'20016,215,683'Power converter with voltage dependent switchable modes'20016,198,177'Power supply providing backup AC voltage and method of operation thereof'20016,191,564'Power factor correcting electrical converter apparatus'20016,169,671'Snubber circuit for a power switch and recitifying diode and power converter employing the same'20016,163,202'Temperature compensation circuit for semiconductor switch and method of operation thereof'20006,115,274'Frequency modulation controller for single-switch, polyphase, DCM boost converter and method of operation thereof'20006,115,276'AC bus system with battery charger/inverter backup'20006,081,435'Cross-conduction limiting circuit, method of operation thereof and DC/DC converter employing the same'20006,052,294'Power supply snubber reset circuit'20006,046,915'Phase selection circuit for three phase power converter and method of operation thereof'20006,038,147'Power supply employing circulating capacitor and method of operation thereof'20006,037,755'Switching controller for a buck+boost converter and method of operation thereof'20006,038,151'Switching network and method of reducing input current total harmonic distortion for a boost converter'20006,034,513'System and method for controlling power factor and power converter employing the same'20006,026,006'Integrated three-phase power converter and method of operation thereof'20006,025,999'Dual output power supply and method of operation thereof'20006,002,241'Dual mode split-boost converter and method of operation thereof'19995,986,904'Self-regulating lossless snubber circuit'19995,956,243'Three-level boost rectifier with voltage doubling switch'19995,946,203'Switching network and method of reducing input current total harmonic distortion associated with a boost converter and a boost converter employing the switching network or method'19995,943,224'Post regulator with energy recovery snubber and power supply employing the same'19995,936,857'Power converter having multiple output voltage capability'19995,933,336'Three-phase boost converter having multiple L-C branches and method of operation thereof'19995,923,547'Snubber circuit for a power converter and method of operation thereof'19995,912,549'Current mode controller for continuous conduction mode power factor correction circuit and method of operation thereof'19995,886,891'Three-phase boost converter having wye-connected input capacitors and method of operation thereof'19995,574,636'Zero-voltage-transition (ZVT) 3-phase PWM voltage link converters'1996Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1996Based in Blacksburg, VA, US· patent location history
1999–2002Patents assigned to LUCENT TECHNOLOGIES INC (28)· patent assignee history
1999–2019Based in Plano, TX, US· patent location history
1999–2000Based in Dallas, TX, US· patent location history
2001Based in Collin, TX, US· patent location history
2013–2019Patents assigned to FUTUREWEI TECHNOLOGIES INC (22)· patent assignee history
2013–2020Patents assigned to MAO HENGCHUN (17)· patent assignee history
2013–2017Patents assigned to CAI BING (7)· patent assignee history
2013–2017Patents assigned to FU DIANBO (7)· patent assignee history
2016–2020Based in Allen, TX, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| LUCENT TECHNOLOGIES INC | 28 | 1999–2002 |
| FUTUREWEI TECHNOLOGIES INC | 22 | 2013–2019 |
| MAO HENGCHUNself | 17 | 2013–2020 |
| CAI BING | 7 | 2013–2017 |
| FU DIANBO | 7 | 2013–2017 |
Locations
| Location | Patents | Span |
|---|---|---|
| Plano, Texas, US | 47 | 1999–2019 |
| Allen, Texas, US | 24 | 2016–2020 |
| Dallas, Texas, US | 7 | 1999–2000 |
| Collin, Texas, US | 1 | 2001 |
| Blacksburg, Virginia, US | 1 | 1996 |