Hefei
China
4
2023-04-27
The entities that hold a legal rights for patent applications filed by inventor Qiu Lei:
Lei Qiu from Hefei, CN has applied for patents for these inventions. The list has both pending applications and granted patents:
Circuit for shifting fixed ground level to floating ground level in motor drive system
#2 | 2023-04-27Start-up initialization circuit of motor drive system
#3 | 2023-04-27Circuit for converting temperature change amount into voltage change in motor drive system
#4 | 2022-07-28Constant current generation circuit for optocoupler isolation amplifier and current precision adjustment method
6563975 ⎘