Inventor · disambiguated record

Kai Xin

Also filed as: XIN KAI

61 granted patents·43 pending applications·291 citations·filing 1999–2025

97Inventor score

Technology areasH02J H02M G01N H04M H02S

Files withHUAWEI DIGITAL POWER TECH CO LTD63 HUAWEI TECH CO LTD21 VONAGE NETWORK LLC6 X RAY OPTICAL SYS INC6 CHEN ZEWU2

Top patents by PatentIndex Score

104 records

0194US8559597B2XRF system having multiple excitation energy bands in highly aligned packageCHEN ZEWU·Filed 2009·Granted Oct 15, 2013·53 cites·22 claims
0291US11316347B2Photovoltaic power system and control method thereofHUAWEI TECH CO LTD·Filed 2020·Granted Apr 26, 2022·3 cites·19 claims
0391US11171489B2Control method and controller for string inverter, inverter, and inverter systemHUAWEI TECH CO LTD·Filed 2020·Granted Nov 9, 2021·3 cites·20 claims
0491US10256002B2Support structure and highly aligned monochromatic X-ray optics for X-ray analysis engines and analyzersX RAY OPTICAL SYS INC·Filed 2016·Granted Apr 9, 2019·4 cites·7 claims
0589US6674861B1Digital audio watermarking using content-adaptive, multiple echo hoppingKENT RIDGE DIGITAL LABS·Filed 1999·Granted Jan 6, 2004·181 cites·81 claims
0687US12224682B2Common-mode voltage injection control method and apparatus for inverterHUAWEI DIGITAL POWER TECH CO LTD·Filed 2023·Granted Feb 11, 2025·1 cites·16 claims
0785US8817063B1Methods and systems for voice and video messagingVONAGE NETWORK LLC·Filed 2013·Granted Aug 26, 2014·9 cites·20 claims
0883US7738630B2Highly aligned x-ray optic and source assembly for precision x-ray analysis applicationsX RAY OPTICAL SYS INC·Filed 2009·Granted Jun 15, 2010·19 cites·23 claims
0981US8050382B2Sample module with sample stream spaced from window, for x-ray analysis systemX RAY OPTICAL SYS INC·Filed 2009·Granted Nov 1, 2011·7 cites·20 claims
1075US8625737B2Sample module with sample stream supported and spaced from window, for X-ray analysis systemCHEN ZEWU·Filed 2011·Granted Jan 7, 2014·3 cites·20 claims
1174US9048001B2XRF system having multiple excitation energy bands in highly aligned packageX RAY OPTICAL SYS INC·Filed 2013·Granted Jun 2, 2015·1 cites·21 claims
1273US9343193B2XRF system having multiple excitation energy bands in highly aligned packageX RAY OPTICAL SYS INC·Filed 2015·Granted May 17, 2016·2 cites·21 claims
1372US10715056B2Three-phase converter with zero-sequence regulationHUAWEI TECH CO LTD·Filed 2019·Granted Jul 14, 2020·2 cites·20 claims
1469US12348047B2Photovoltaic system and carrier wave signal synchronization methodHUAWEI DIGITAL POWER TECH CO LTD·Filed 2023·Granted Jul 1, 2025·0 cites·19 claims
1569US9225836B2Methods and systems for voice and video messagingVONAGE NETWORK LLC·Filed 2014·Granted Dec 29, 2015·2 cites·20 claims
1668US2025279732A1Photovoltaic Inverter and Power Adjustment Method Thereof, and Photovoltaic SystemHUAWEI DIGITAL POWER TECH CO LTD·Filed 2025·Application pending·0 cites
1768US2025211132A1Photovoltaic Inverter and Control Method ThereofHUAWEI DIGITAL POWER TECH CO LTD·Filed 2025·Application pending·0 cites
1867US12456869B2Photovoltaic power generation system, photovoltaic inverter, and IV curve scanning methodHUAWEI DIGITAL POWER TECH CO LTD·Filed 2023·Granted Oct 28, 2025·0 cites·20 claims
1967US12328061B2Method and apparatus for suppressing cross current in inverter parallel systemHUAWEI DIGITAL POWER TECH CO LTD·Filed 2023·Granted Jun 10, 2025·0 cites·20 claims
2067US2025293585A1Grid-forming control method for power converter and power converterHUAWEI DIGITAL POWER TECH CO LTD·Filed 2025·Application pending·0 cites
2166US12316399B2Power line communication system, power electronic apparatus, and interference suppression methodHUAWEI DIGITAL POWER TECH CO LTD·Filed 2023·Granted May 27, 2025·0 cites·20 claims
2266US11689026B2Photovoltaic power system and control method thereofHUAWEI TECH CO LTD·Filed 2022·Granted Jun 27, 2023·0 cites·18 claims
2366US2025273960A1Microgrid Cluster, and Microgrid Control MethodHUAWEI DIGITAL POWER TECH CO LTD·Filed 2025·Application pending·0 cites
2464US12470065B2Power supply system and current conversion methodHUAWEI DIGITAL POWER TECH CO LTD·Filed 2024·Granted Nov 11, 2025·0 cites·19 claims
2564US12438371B2Power supply system and grid connection control methodHUAWEI DIGITAL POWER TECH CO LTD·Filed 2024·Granted Oct 7, 2025·0 cites·20 claims
2664US12355253B2Photovoltaic system, protection method, and inverter systemHUAWEI DIGITAL POWER TECH CO LTD·Filed 2023·Granted Jul 8, 2025·0 cites·20 claims
2764US2025260308A1Fault Ride-Through Method and ConverterHUAWEI DIGITAL POWER TECH CO LTD·Filed 2025·Application pending·0 cites
2864US2025260229A1Control method, new energy converter, and grid-connected power systemHUAWEI DIGITAL POWER TECH CO LTD·Filed 2025·Application pending·0 cites
2963US12308791B2Photovoltaic power generation system, power control method, and combiner boxHUAWEI DIGITAL POWER TECH CO LTD·Filed 2023·Granted May 20, 2025·0 cites·20 claims
3063US12230966B2Power control method and apparatus, and energy systemHUAWEI DIGITAL POWER TECH CO LTD·Filed 2023·Granted Feb 18, 2025·0 cites·20 claims
3163US2025323582A1Power converter and inverter circuit control methodHUAWEI DIGITAL POWER TECH CO LTD·Filed 2025·Application pending·0 cites
3262US12445062B2Bipolar power supply system and control methodHUAWEI DIGITAL POWER TECH CO LTD·Filed 2023·Granted Oct 14, 2025·0 cites·20 claims
3362US12418248B2Photovoltaic system, inverter, and control methodHUAWEI DIGITAL POWER TECH CO LTD·Filed 2023·Granted Sep 16, 2025·0 cites·20 claims
3462US12355255B2Inverter, power grid power supply system, and method for controlling excitation inrush currentHUAWEI DIGITAL POWER TECH CO LTD·Filed 2023·Granted Jul 8, 2025·0 cites·14 claims
3562US2025226659A1Grid connection inverter system and low-frequency oscillation suppression methodHUAWEI DIGITAL POWER TECH CO LTD·Filed 2025·Application pending·0 cites
3662US2025023456A1Power converter and detection method for terminal statusHUAWEI DIGITAL POWER TECH CO LTD·Filed 2024·Application pending·0 cites
3761US12483126B2Resonant switched capacitor converter and control method thereofHUAWEI DIGITAL POWER TECH CO LTD·Filed 2023·Granted Nov 25, 2025·0 cites·17 claims
3861US12483158B2Power supply system, inverter, and method for controlling positive and negative bus voltages of inverterHUAWEI DIGITAL POWER TECH CO LTD·Filed 2023·Granted Nov 25, 2025·0 cites·20 claims
3961US11818903B2Solar cell, and methods for preparing the solar cell, smart glasses, and electronic devicesHUAWEI TECH CO LTD·Filed 2022·Granted Nov 14, 2023·0 cites·14 claims
4061US2025027815A1Probe for measuring optical properties of liquidsMORGAN III RANZY·Filed 2024·Application pending·0 cites
4161US2025023489A1Power converter, energy storage system, and control methodHUAWEI DIGITAL POWER TECH CO LTD·Filed 2024·Application pending·0 cites
4261US2025246992A1Power conversion system and ripple current suppression method thereofHUAWEI DIGITAL POWER TECH CO LTD·Filed 2025·Application pending·0 cites
4360US11699906B2String inverter control method, apparatus, and system, and storage mediumHUAWEI DIGITAL POWER TECH CO LTD·Filed 2021·Granted Jul 11, 2023·0 cites·19 claims
4460US2024333172A1Power conversion device and control method thereofHUAWEI DIGITAL POWER TECH CO LTD·Filed 2024·Application pending·0 cites
4559US12328003B2Energy storage system, power conversion system, and method for optimizing primary frequency modulationHUAWEI DIGITAL POWER TECH CO LTD·Filed 2023·Granted Jun 10, 2025·0 cites·20 claims
4659US12224707B2Photovoltaic system and maximum input power determining methodHUAWEI DIGITAL POWER TECH CO LTD·Filed 2023·Granted Feb 11, 2025·0 cites·18 claims
4759US11626834B2Power backfeed control method, converter, and photovoltaic power generation systemHUAWEI DIGITAL POWER TECH CO LTD·Filed 2021·Granted Apr 11, 2023·0 cites·20 claims
4859US11342757B2Islanding detection method and apparatus, and computer-readable storage mediumHUAWEI DIGITAL POWER TECH CO LTD·Filed 2021·Granted May 24, 2022·0 cites·17 claims
4959US9237038B2Channel and noise estimation method and associated apparatusMSTAR SEMICONDUCTOR INC·Filed 2013·Granted Jan 12, 2016·1 cites·5 claims
5059US2024106351A1Multi-inverter parallel system and method for controlling grid connection of inverterHUAWEI DIGITAL POWER TECH CO LTD·Filed 2023·Application pending·0 cites

Showing the top 50 of 104 patent records by PatentIndex Score.

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →