Inventor
INGLIS PETER DW
GB3 patents
Patents
3 patentsUS11555376B2Jan 17, 2023
Ball valves, methods to close a ball valve, and methods to form a well barrier
HALLIBURTON ENERGY SERVICES INC2 citations67
US10662736B2May 26, 2020
Hydrostatic equalizing stem check valve
HALLIBURTON ENERGY SERVICES INC1 citations58
US9869162B2Jan 16, 2018
Ball valve having dual pistons each individually actuable
HALLIBURTON ENERGY SERVICES INC1 citations46