Inventor
LIU YONGHONG
CN20 patents
⚠️ This page may combine multiple inventors who share the name “LIU YONGHONG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
UNIV CHINA PETROLEUM EAST CHINA
11 patentsUS11346200B2May 31, 2022
Method and system for guaranteeing safety of offshore oil well control equipment
UNIV CHINA PETROLEUM EAST CHINA104 citations96
US11243509B2Feb 8, 2022
Method for assessing safety integrity level of offshore oil well control equipment
UNIV CHINA PETROLEUM EAST CHINA115 citations96
US10989019B2Apr 27, 2021
Fully-electrically driven downhole safety valve
UNIV CHINA PETROLEUM EAST CHINA145 citations95
US12475423B1Nov 18, 2025
Intelligent operation and maintenance optimization method and intelligent production optimization method for offshore oil subsea production system (SPS), and system
UNIV CHINA PETROLEUM EAST CHINA2 citations69
US11085245B2Aug 10, 2021
Multi-path combined high-low voltage plasma rock-breaking drill bit, drill bit apparatus and drilling method
UNIV CHINA PETROLEUM EAST CHINA2 citations69
US11293231B2Apr 5, 2022
Multi-path combined high-low voltage plasma drilling method, drill bit for drilling and drill bit apparatus for drilling
UNIV CHINA PETROLEUM EAST CHINA0 citations60
US11922335B2Mar 5, 2024
Method and system for evaluating macro resilience of offshore oil well control equipment
UNIV CHINA PETROLEUM EAST CHINA0 citations50
US11268326B2Mar 8, 2022
Multi-path combined high-low voltage plasma drilling power source and drillling system
UNIV CHINA PETROLEUM EAST CHINA0 citations48
US12447583B2Oct 21, 2025
Digital twin control system for product processing quality
UNIV CHINA PETROLEUM EAST CHINA0 citations45
US11768976B2Sep 26, 2023
Subsea Christmas tree re-prediction method integrating Kalman filter and Bayesian network
UNIV CHINA PETROLEUM EAST CHINA0 citations44
US9970270B2May 15, 2018
Movable combined sand control pipe of axial and radial slotted screen pipes
UNIV CHINA PETROLEUM EAST CHINA0 citations37
UNIV QINGDAO TECHNOLOGY
4 patentsUS11766753B2Sep 26, 2023
Milling system and method under different lubrication conditions
UNIV QINGDAO TECHNOLOGY2 citations71
US11161210B2Nov 2, 2021
Milling system and method under different lubrication conditions
UNIV QINGDAO TECHNOLOGY2 citations71
US12521829B2Jan 13, 2026
Method and system for injecting cutting fluid during milling under different working conditions
UNIV QINGDAO TECHNOLOGY0 citations60
US11084136B2Aug 10, 2021
Milling system and method under different lubrication conditions
UNIV QINGDAO TECHNOLOGY0 citations59