ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,504,555, issued on Dec. 23, was assigned to Halliburton Energy Services Inc. (Houston).

"Scandium target for a neutron generator for wellbore logging" was invented by Zilu Zhou (Needham, Mass.) and Weijun Guo (Houston).

According to the abstract* released by the U.S. Patent & Trademark Office: "A downhole neutron generator includes a housing, a gas reservoir positionable within the housing, a target rod positionable within the housing and having a longitudinal axis aligned with a central axis of the housing, an ion source positionable adjacent to the gas reservoir and between the target rod and the gas reservoir, and a target positionable on a surface of the target rod facing the ion...