Inventor
JIAN BAOGUO
CN6 patents
⚠️ This page may combine multiple inventors who share the name “JIAN BAOGUO”. 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 patentsUS11519405B2Dec 6, 2022
Valve spring seat sleeve, valve assembly and plunger pump
YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO LTD77 citations97
US12085073B2Sep 10, 2024
Valve spring fixing device and plunger pump
YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO LTD0 citations50
US11964350B2Apr 23, 2024
Puller, claw, and usage method of puller
YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO LTD0 citations50
US12297824B2May 13, 2025
Plunger pump with fault diagnosis structure
YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO LTD0 citations43