Inventor
HAN MAOMAO
CN5 patents
⚠️ This page may combine multiple inventors who share the name “HAN MAOMAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO LTD
4 patentsUS11480040B2Oct 25, 2022
Electro-hydraulic hybrid drive sand-mixing equipment
YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO LTD85 citations94
US12404758B2Sep 2, 2025
Mixing and discharging device, mixing and discharging system and fracturing system
YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO LTD0 citations62
US11821296B2Nov 21, 2023
Mixing and discharging device, mixing and discharging system and fracturing system
YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO LTD0 citations62
US12381236B2Aug 5, 2025
Fuel cell-based control method, control device and well-site stimulation method
YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO LTD0 citations48