ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,230,468, issued on Feb. 18, was assigned to Varex Imaging Corp. (Salt Lake City).
"X-ray system with field emitters and arc protection" was invented by Dave Kirkham (South Jordan, Utah) and Colton B. Woodman (Magna, Utah).
According to the abstract* released by the U.S. Patent & Trademark Office: "An x-ray tube, comprising: a field emitter including an emission surface; an anode; and a focus electrode disposed between the field emitter and the anode; wherein: the focus electrode includes: a first surface that is substantially perpendicular to the field emitter emission surface and nearest to the field emitter; a second surface that is axially nearest to the anode, wherein the field e...