Inventor
KE JIANJUN
CN14 patents
Patents
14 patentsUS11959617B1Apr 16, 2024
Downlight emergency power supply device
SHENZHEN BILLDA TECH CO LTD4 citations71
USD1116997SMar 10, 2026
Downlight power control box
SHENZHEN BILLDA TECH CO LTD0 citations59
USD1112100SFeb 10, 2026
Connector box for light cable
SHENZHEN BILLDA TECH CO LTD0 citations59
USD1110284SJan 27, 2026
Explosion-proof switch
SHENZHEN BILLDA TECH CO LTD0 citations59
USD1110285SJan 27, 2026
Explosion-proof switch
SHENZHEN BILLDA TECH CO LTD0 citations59
USD1106086SDec 16, 2025
Emergency power control box
SHENZHEN BILLDA TECH CO LTD0 citations59
USD1106085SDec 16, 2025
Emergency power control box
SHENZHEN BILLDA TECH CO LTD0 citations59
USD1106067SDec 16, 2025
Emergency power supply housing
SHENZHEN BILLDA TECH CO LTD0 citations59
USD1098548SOct 14, 2025
Emergency light tube
SHENZHEN BILLDA TECH CO LTD0 citations59
USD1058486SJan 21, 2025
Power supply
SHENZHEN BILLDA TECH CO LTD0 citations59
US12003084B2Jun 4, 2024
Foldable emergency power box with shaft structure allowing wires to penetrate through
SHENZHEN BILLDA TECH CO LTD0 citations59
USD972508SDec 13, 2022
Emergency power supply
SHENZHEN BILLDA TECH CO LTD1 citations59
US12500442B1Dec 16, 2025
Emergency power supply circuit and lighting device
SHENZHEN BILLDA TECH CO LTD0 citations50
US11991806B2May 21, 2024
Emergency output circuit for starting LED lamp tubes with leakage protection
SHENZHEN BILLDA TECH CO LTD0 citations49