Inventor
JI RENJIE
CN10 patents
⚠️ This page may combine multiple inventors who share the name “JI RENJIE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
UNIV CHINA PETROLEUM EAST CHINA
9 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
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
US9970270B2May 15, 2018
Movable combined sand control pipe of axial and radial slotted screen pipes
UNIV CHINA PETROLEUM EAST CHINA0 citations37