Beijing
China
9
2025-11-20
The entities that hold a legal rights for patent applications filed by inventor DU Dingxiang:
Dingxiang DU from Beijing, CN has applied for patents for these inventions. The list has both pending applications and granted patents:
INTER-TURN PROTECTION METHOD AND SYSTEM FOR CONVERTER TRANSFORMER
#2 | 2022-12-29LINE DOUBLE-END STEADY-STATE QUANTITY DISTANCE MEASURING METHOD AND SYSTEM BASED ON AMPLITUDE-COMPARISON PRINCIPLE
#3 | 2022-09-08Direct-current transmission line protection method and system based on pure current characteristics
#4 | 2022-07-28Method and device for timing in time-varying distance protection based on multiple lines in tower
#5 | 2022-04-28Method and device for starting direct-current (DC) transmission line protection, and storage medium
#6 | 2019-01-10Method of free wave energy protection for half-wavelength line based on one sided current
#7 | 2018-12-27Current differential protection method for self-adaptive half-wavelength line based on time-difference method
#8 | 2018-12-20Concomitant impedance protection method for half-wavelength transmission line
#9 | 2017-11-02Method For Overcoming Influence Of Out-Flowing Current On Bus Differential Protection
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