ALEXANDRIA, Va., May 5 -- United States Patent no. 12,618,303, issued on May 5, was assigned to Halliburton Energy Services Inc. (Houston).

"Single solenoid valve electro-hydraulic control system that actuates control valve" was invented by Lorenzzo Breda Minassa (Tomball, Texas) and Robert William Gissler (Spring, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method comprises charging a first hydraulic line to have greater pressure than a second hydraulic line and energizing a solenoid valve, wherein charging the first hydraulic line and energizing the solenoid valve initiates transition of an interval control valve (ICV) from a first state to a second state. The method comprises discontinuing ener...