Inventor
ZHANG JICHUAN
CN4 patents
⚠️ This page may combine multiple inventors who share the name “ZHANG JICHUAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CHINA NAT PETROLEUM CORP
3 patentsUS12199448B2Jan 14, 2025
System and method for dynamically adjusting coupling coefficients of non-contact transmission magnetic mechanism
CHINA NAT PETROLEUM CORP0 citations45
US11982146B2May 14, 2024
Jet flow adjustment method for rotary steerable downhole release
CHINA NAT PETROLEUM CORP0 citations44
US11946350B2Apr 2, 2024
Method for remotely shutting down downhole unit of rotary steering system from ground
CHINA NAT PETROLEUM CORP0 citations43