Inventor

CONG HENGLI

CN3 patents

⚠️ This page may combine multiple inventors who share the name “CONG HENGLI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LIU JUN

2 patents

US8283879B2Oct 9, 2012

Braking controller of a three-phase permanent magnetic brushless DC motor for directly driving a screw pump

LIU JUN2 citations59

US8702400B2Apr 22, 2014

Surface motor direct-drive sucker-rod screw pump device

LIU JUN0 citations45

MILLENNIUM OILFLOW SYSTEMS & TECHNOLOGY INC

1 patent

US9059606B2Jun 16, 2015

Surface motor direct-drive sucker-rod screw pump device

MILLENNIUM OILFLOW SYSTEMS & TECHNOLOGY INC0 citations39