Inventor
YUAN MIN M
US3 patents
Patents
3 patentsUS11313189B2Apr 26, 2022
Downhole check valve assembly with a frustoconical mandrel
HALLIBURTON ENERGY SERVICES INC0 citations50
US11512545B2Nov 29, 2022
Downhole check valve assembly with a ratchet mechanism
HALLIBURTON ENERGY SERVICES INC0 citations43
US11473395B2Oct 18, 2022
Downhole check valve assembly with a locking mechanism
HALLIBURTON ENERGY SERVICES INC0 citations43